selectors.py
author Sandrine Ribeau <sandrine.ribeau@logilab.fr>
Mon, 03 May 2010 14:17:45 +0200
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permissions -rw-r--r--
[json-controller] - refactoring of js_component and js_view, it now uses _call_view - _call_view accepts paginate as a parameter
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# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
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#
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# This file is part of CubicWeb.
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#
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# CubicWeb is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
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""".. _Selectors:
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Selectors
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---------
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Using and combining existant selectors
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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You can combine selectors using the `&`, `|` and `~` operators.
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When two selectors are combined using the `&` operator, it means that
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both should return a positive score. On success, the sum of scores is
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returned.
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When two selectors are combined using the `|` operator, it means that
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one of them should return a positive score. On success, the first
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positive score is returned.
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You can also "negate" a selector by precedeing it by the `~` unary operator.
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Of course you can use parenthesis to balance expressions.
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Example
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~~~~~~~
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The goal: when on a blog, one wants the RSS link to refer to blog entries, not to
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the blog entity itself.
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To do that, one defines a method on entity classes that returns the
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RSS stream url for a given entity. The default implementation on
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:class:`~cubicweb.entities.AnyEntity` (the generic entity class used
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as base for all others) and a specific implementation on `Blog` will
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do what we want.
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But when we have a result set containing several `Blog` entities (or
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different entities), we don't know on which entity to call the
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aforementioned method. In this case, we keep the generic behaviour.
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Hence we have two cases here, one for a single-entity rsets, the other for
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multi-entities rsets.
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In web/views/boxes.py lies the RSSIconBox class. Look at its selector:
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.. sourcecode:: python
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  class RSSIconBox(ExtResourcesBoxTemplate):
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    ''' just display the RSS icon on uniform result set '''
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    __select__ = ExtResourcesBoxTemplate.__select__ & non_final_entity()
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It takes into account:
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* the inherited selection criteria (one has to look them up in the class
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  hierarchy to know the details)
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* :class:`~cubicweb.selectors.non_final_entity`, which filters on result sets
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  containing non final entities (a 'final entity' being synonym for entity
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  attributes type, eg `String`, `Int`, etc)
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This matches our second case. Hence we have to provide a specific component for
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the first case:
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.. sourcecode:: python
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  class EntityRSSIconBox(RSSIconBox):
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    '''just display the RSS icon on uniform result set for a single entity'''
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    __select__ = RSSIconBox.__select__ & one_line_rset()
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Here, one adds the :class:`~cubicweb.selectors.one_line_rset` selector, which
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filters result sets of size 1. Thus, on a result set containing multiple
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entities, :class:`one_line_rset` makes the EntityRSSIconBox class non
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selectable. However for a result set with one entity, the `EntityRSSIconBox`
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class will have a higher score than `RSSIconBox`, which is what we wanted.
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Of course, once this is done, you have to:
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* fill in the call method of `EntityRSSIconBox`
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* provide the default implementation of the method returning the RSS stream url
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  on :class:`~cubicweb.entities.AnyEntity`
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* redefine this method on `Blog`.
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When to use selectors?
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~~~~~~~~~~~~~~~~~~~~~~
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Selectors are to be used whenever arises the need of dispatching on the shape or
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content of a result set or whatever else context (value in request form params,
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authenticated user groups, etc...). That is, almost all the time.
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Here is a quick example:
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.. sourcecode:: python
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    class UserLink(component.Component):
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	'''if the user is the anonymous user, build a link to login else a link
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	to the connected user object with a loggout link
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	'''
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	__regid__ = 'loggeduserlink'
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	def call(self):
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	    if self._cw.session.anonymous_session:
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		# display login link
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		...
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	    else:
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		# display a link to the connected user object with a loggout link
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		...
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The proper way to implement this with |cubicweb| is two have two different
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classes sharing the same identifier but with different selectors so you'll get
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the correct one according to the context.
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.. sourcecode:: python
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    class UserLink(component.Component):
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	'''display a link to the connected user object with a loggout link'''
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	__regid__ = 'loggeduserlink'
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	__select__ = component.Component.__select__ & authenticated_user()
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	def call(self):
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            # display useractions and siteactions
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	    ...
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    class AnonUserLink(component.Component):
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	'''build a link to login'''
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	__regid__ = 'loggeduserlink'
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	__select__ = component.Component.__select__ & anonymous_user()
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	def call(self):
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	    # display login link
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            ...
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The big advantage, aside readability once you're familiar with the
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system, is that your cube becomes much more easily customizable by
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improving componentization.
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.. _CustomSelectors:
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Defining your own selectors
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. autodocstring:: cubicweb.appobject::objectify_selector
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In other cases, you can take a look at the following abstract base classes:
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.. autoclass:: cubicweb.selectors.ExpectedValueSelector
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.. autoclass:: cubicweb.selectors.EClassSelector
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.. autoclass:: cubicweb.selectors.EntitySelector
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Also, think to use the :func:`lltrace` decorator on your selector class' :meth:`__call__` method
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or below the :func:`objectify_selector` decorator of your selector function so it gets
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traceable when :class:`traced_selection` is activated (see :ref:`DebuggingSelectors`).
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.. autofunction:: cubicweb.selectors.lltrace
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.. note::
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  Selectors __call__ should *always* return a positive integer, and shall never
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  return `None`.
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.. _DebuggingSelectors:
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Debugging selection
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~~~~~~~~~~~~~~~~~~~
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Once in a while, one needs to understand why a view (or any application object)
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is, or is not selected appropriately. Looking at which selectors fired (or did
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not) is the way. The :class:`cubicweb.selectors.traced_selection` context
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manager to help with that, *if you're running your instance in debug mode*.
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.. autoclass:: cubicweb.selectors.traced_selection
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.. |cubicweb| replace:: *CubicWeb*
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"""
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__docformat__ = "restructuredtext en"
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import logging
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from warnings import warn
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from logilab.common.deprecation import class_renamed
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from logilab.common.compat import all, any
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from logilab.common.interface import implements as implements_iface
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from yams import BASE_TYPES
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from cubicweb import Unauthorized, NoSelectableObject, NotAnEntity, role
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# even if not used, let yes here so it's importable through this module
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from cubicweb.appobject import Selector, objectify_selector, yes
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from cubicweb.vregistry import class_regid
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from cubicweb.cwconfig import CubicWebConfiguration
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from cubicweb.schema import split_expression
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# helpers for debugging selectors
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SELECTOR_LOGGER = logging.getLogger('cubicweb.selectors')
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TRACED_OIDS = None
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def _trace_selector(cls, selector, args, ret):
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    # /!\ lltrace decorates pure function or __call__ method, this
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    #     means argument order may be different
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    if isinstance(cls, Selector):
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        selname = str(cls)
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        vobj = args[0]
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    else:
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        selname = selector.__name__
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        vobj = cls
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    if TRACED_OIDS == 'all' or class_regid(vobj) in TRACED_OIDS:
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        #SELECTOR_LOGGER.warning('selector %s returned %s for %s', selname, ret, cls)
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        print '%s -> %s for %s(%s)' % (selname, ret, vobj, vobj.__regid__)
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def lltrace(selector):
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    """use this decorator on your selectors so the becomes traceable with
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    :class:`traced_selection`
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    """
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    # don't wrap selectors if not in development mode
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    if CubicWebConfiguration.mode == 'system': # XXX config.debug
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        return selector
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    def traced(cls, *args, **kwargs):
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        ret = selector(cls, *args, **kwargs)
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        if TRACED_OIDS is not None:
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            _trace_selector(cls, selector, args, ret)
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        return ret
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    traced.__name__ = selector.__name__
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    traced.__doc__ = selector.__doc__
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    return traced
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class traced_selection(object):
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    """
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    Typical usage is :
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    .. sourcecode:: python
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        >>> from cubicweb.selectors import traced_selection
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        >>> with traced_selection():
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        ...     # some code in which you want to debug selectors
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        ...     # for all objects
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    Don't forget the 'from __future__ import with_statement' at the module top-level
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    if you're using python prior to 2.6.
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    This will yield lines like this in the logs::
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        selector one_line_rset returned 0 for <class 'cubicweb.web.views.basecomponents.WFHistoryVComponent'>
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    You can also give to :class:`traced_selection` the identifiers of objects on
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    which you want to debug selection ('oid1' and 'oid2' in the example above).
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    .. sourcecode:: python
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        >>> with traced_selection( ('regid1', 'regid2') ):
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        ...     # some code in which you want to debug selectors
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        ...     # for objects with __regid__ 'regid1' and 'regid2'
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    A potentially usefull point to set up such a tracing function is
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    the `cubicweb.vregistry.Registry.select` method body.
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    """
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    def __init__(self, traced='all'):
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        self.traced = traced
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    def __enter__(self):
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        global TRACED_OIDS
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        TRACED_OIDS = self.traced
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    def __exit__(self, exctype, exc, traceback):
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        global TRACED_OIDS
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        TRACED_OIDS = None
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        return traceback is None
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def score_interface(etypesreg, cls_or_inst, cls, iface):
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    """Return XXX if the give object (maybe an instance or class) implements
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    the interface.
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    """
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    if getattr(iface, '__registry__', None) == 'etypes':
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        # adjust score if the interface is an entity class
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        parents = etypesreg.parent_classes(cls_or_inst.__regid__)
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        if iface is cls:
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            return len(parents) + 4
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        if iface is parents[-1]: # Any
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            return 1
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        for index, basecls in enumerate(reversed(parents[:-1])):
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            if iface is basecls:
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                return index + 3
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        return 0
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    if implements_iface(cls_or_inst, iface):
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        # implenting an interface takes precedence other special Any interface
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        return 2
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    return 0
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# abstract selectors / mixin helpers ###########################################
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class PartialSelectorMixIn(object):
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    """convenience mix-in for selectors that will look into the containing
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    class to find missing information.
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    cf. `cubicweb.web.action.LinkToEntityAction` for instance
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    """
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    def __call__(self, cls, *args, **kwargs):
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        self.complete(cls)
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        return super(PartialSelectorMixIn, self).__call__(cls, *args, **kwargs)
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class ImplementsMixIn(object):
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    """mix-in class for selectors checking implemented interfaces of something
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    """
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    def __init__(self, *expected_ifaces, **kwargs):
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        super(ImplementsMixIn, self).__init__(**kwargs)
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        self.expected_ifaces = expected_ifaces
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    def __str__(self):
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        return '%s(%s)' % (self.__class__.__name__,
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                           ','.join(str(s) for s in self.expected_ifaces))
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    def score_interfaces(self, req, cls_or_inst, cls):
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        score = 0
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        etypesreg = req.vreg['etypes']
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        for iface in self.expected_ifaces:
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            if isinstance(iface, basestring):
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   339
                # entity type
4596ce9bb4dc EntitySelector base class now understand 'entity' in kwargs, new entity_implements selector
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   340
                try:
2822
f26578339214 deprecate appobject.vreg and rename appobject instance attributes using cw_ prefix
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2819
diff changeset
   341
                    iface = etypesreg.etype_class(iface)
1301
4596ce9bb4dc EntitySelector base class now understand 'entity' in kwargs, new entity_implements selector
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   342
                except KeyError:
4596ce9bb4dc EntitySelector base class now understand 'entity' in kwargs, new entity_implements selector
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   343
                    continue # entity type not in the schema
2822
f26578339214 deprecate appobject.vreg and rename appobject instance attributes using cw_ prefix
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2819
diff changeset
   344
            score += score_interface(etypesreg, cls_or_inst, cls, iface)
1301
4596ce9bb4dc EntitySelector base class now understand 'entity' in kwargs, new entity_implements selector
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   345
        return score
4596ce9bb4dc EntitySelector base class now understand 'entity' in kwargs, new entity_implements selector
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   346
4596ce9bb4dc EntitySelector base class now understand 'entity' in kwargs, new entity_implements selector
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   347
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   348
class EClassSelector(Selector):
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   349
    """abstract class for selectors working on *entity class(es)* specified
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   350
    explicitly or found of the result set.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   351
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   352
    Here are entity lookup / scoring rules:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   353
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   354
    * if `entity` is specified, return score for this entity's class
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   355
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   356
    * elif `row` is specified, return score for the class of the entity
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   357
      found in the specified cell, using column specified by `col` or 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   358
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   359
    * else return the sum of scores for each entity class found in the column
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   360
      specified specified by the `col` argument or in column 0 if not specified,
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   361
      unless:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   362
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   363
      - `once_is_enough` is False (the default) and some entity class is scored
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   364
        to 0, in which case 0 is returned
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   365
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   366
      - `once_is_enough` is True, in which case the first non-zero score is
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   367
        returned
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   368
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   369
      - `accept_none` is False and some cell in the column has a None value
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   370
        (this may occurs with outer join)
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   371
    """
3522
cde0ff4f7a8c [selectors] add accept_none to EClassSelector so we can specify to not ignore None from outer join in some cases
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3350
diff changeset
   372
    def __init__(self, once_is_enough=False, accept_none=True):
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   373
        self.once_is_enough = once_is_enough
3522
cde0ff4f7a8c [selectors] add accept_none to EClassSelector so we can specify to not ignore None from outer join in some cases
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3350
diff changeset
   374
        self.accept_none = accept_none
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   375
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   376
    @lltrace
2161
200481e7b156 prepare time where it won't be mandatory to give rset to select()
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2003
diff changeset
   377
    def __call__(self, cls, req, rset=None, row=None, col=0, **kwargs):
4071
e19e586cc74e deprecates entity_implements / but_etype selectors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4026
diff changeset
   378
        if kwargs.get('entity'):
e19e586cc74e deprecates entity_implements / but_etype selectors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4026
diff changeset
   379
            return self.score_class(kwargs['entity'].__class__, req)
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   380
        if not rset:
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   381
            return 0
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   382
        score = 0
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   383
        if row is None:
3522
cde0ff4f7a8c [selectors] add accept_none to EClassSelector so we can specify to not ignore None from outer join in some cases
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3350
diff changeset
   384
            if not self.accept_none:
cde0ff4f7a8c [selectors] add accept_none to EClassSelector so we can specify to not ignore None from outer join in some cases
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3350
diff changeset
   385
                if any(rset[i][col] is None for i in xrange(len(rset))):
cde0ff4f7a8c [selectors] add accept_none to EClassSelector so we can specify to not ignore None from outer join in some cases
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3350
diff changeset
   386
                    return 0
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   387
            for etype in rset.column_types(col):
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   388
                if etype is None: # outer join
3522
cde0ff4f7a8c [selectors] add accept_none to EClassSelector so we can specify to not ignore None from outer join in some cases
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3350
diff changeset
   389
                    return 0
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   390
                escore = self.score(cls, req, etype)
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   391
                if not escore and not self.once_is_enough:
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   392
                    return 0
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   393
                elif self.once_is_enough:
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   394
                    return escore
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   395
                score += escore
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   396
        else:
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   397
            etype = rset.description[row][col]
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   398
            if etype is not None:
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   399
                score = self.score(cls, req, etype)
779
8510e14335e1 implements some str, fix implements selector, test and fixes
sylvain.thenault@logilab.fr
parents: 774
diff changeset
   400
        return score
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   401
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   402
    def score(self, cls, req, etype):
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   403
        if etype in BASE_TYPES:
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   404
            return 0
2822
f26578339214 deprecate appobject.vreg and rename appobject instance attributes using cw_ prefix
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2819
diff changeset
   405
        return self.score_class(req.vreg['etypes'].etype_class(etype), req)
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   406
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   407
    def score_class(self, eclass, req):
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   408
        raise NotImplementedError()
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   409
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   410
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   411
class EntitySelector(EClassSelector):
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   412
    """abstract class for selectors working on *entity instance(s)* specified
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   413
    explicitly or found of the result set.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   414
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   415
    Here are entity lookup / scoring rules:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   416
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   417
    * if `entity` is specified, return score for this entity
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   418
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   419
    * elif `row` is specified, return score for the entity found in the
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   420
      specified cell, using column specified by `col` or 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   421
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   422
    * else return the sum of scores for each entity found in the column
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   423
      specified specified by the `col` argument or in column 0 if not specified,
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   424
      unless:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   425
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   426
      - `once_is_enough` is False (the default) and some entity is scored
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   427
        to 0, in which case 0 is returned
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   428
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   429
      - `once_is_enough` is True, in which case the first non-zero score is
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   430
        returned
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   431
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   432
      - `accept_none` is False and some cell in the column has a None value
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   433
        (this may occurs with outer join)
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   434
5147
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   435
    .. Note::
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   436
       using :class:`EntitySelector` or :class:`EClassSelector` as base selector
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   437
       class impacts performance, since when no entity or row is specified the
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   438
       later works on every different *entity class* found in the result set,
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   439
       while the former works on each *entity* (eg each row of the result set),
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   440
       which may be much more costly.
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   441
    """
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   442
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   443
    @lltrace
2161
200481e7b156 prepare time where it won't be mandatory to give rset to select()
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2003
diff changeset
   444
    def __call__(self, cls, req, rset=None, row=None, col=0, **kwargs):
1301
4596ce9bb4dc EntitySelector base class now understand 'entity' in kwargs, new entity_implements selector
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   445
        if not rset and not kwargs.get('entity'):
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   446
            return 0
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   447
        score = 0
1301
4596ce9bb4dc EntitySelector base class now understand 'entity' in kwargs, new entity_implements selector
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   448
        if kwargs.get('entity'):
4596ce9bb4dc EntitySelector base class now understand 'entity' in kwargs, new entity_implements selector
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   449
            score = self.score_entity(kwargs['entity'])
4596ce9bb4dc EntitySelector base class now understand 'entity' in kwargs, new entity_implements selector
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   450
        elif row is None:
1994
56a235af050e col may be None
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1987
diff changeset
   451
            col = col or 0
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   452
            for row, rowvalue in enumerate(rset.rows):
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   453
                if rowvalue[col] is None: # outer join
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   454
                    if not self.accept_none:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   455
                        return 0
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   456
                    continue
652
603c782dc092 various SyntaxErrors / missing import fixes + reorganization of the `registered` classmethod
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 650
diff changeset
   457
                escore = self.score(req, rset, row, col)
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   458
                if not escore and not self.once_is_enough:
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   459
                    return 0
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   460
                elif self.once_is_enough:
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   461
                    return escore
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   462
                score += escore
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   463
        else:
1994
56a235af050e col may be None
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1987
diff changeset
   464
            col = col or 0
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   465
            etype = rset.description[row][col]
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   466
            if etype is not None: # outer join
640
8e64f12be69c drop EntityAction usage in cw, upgrade rql_condition and friends
sylvain.thenault@logilab.fr
parents: 634
diff changeset
   467
                score = self.score(req, rset, row, col)
779
8510e14335e1 implements some str, fix implements selector, test and fixes
sylvain.thenault@logilab.fr
parents: 774
diff changeset
   468
        return score
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   469
640
8e64f12be69c drop EntityAction usage in cw, upgrade rql_condition and friends
sylvain.thenault@logilab.fr
parents: 634
diff changeset
   470
    def score(self, req, rset, row, col):
8e64f12be69c drop EntityAction usage in cw, upgrade rql_condition and friends
sylvain.thenault@logilab.fr
parents: 634
diff changeset
   471
        try:
8e64f12be69c drop EntityAction usage in cw, upgrade rql_condition and friends
sylvain.thenault@logilab.fr
parents: 634
diff changeset
   472
            return self.score_entity(rset.get_entity(row, col))
8e64f12be69c drop EntityAction usage in cw, upgrade rql_condition and friends
sylvain.thenault@logilab.fr
parents: 634
diff changeset
   473
        except NotAnEntity:
8e64f12be69c drop EntityAction usage in cw, upgrade rql_condition and friends
sylvain.thenault@logilab.fr
parents: 634
diff changeset
   474
            return 0
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   475
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   476
    def score_entity(self, entity):
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   477
        raise NotImplementedError()
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   478
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   479
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   480
class ExpectedValueSelector(Selector):
5147
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   481
    """Take a list of expected values as initializer argument and store them
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   482
    into the :attr:`expected` set attribute.
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   483
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   484
    You should implements the :meth:`_get_value(cls, req, **kwargs)` method
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   485
    which should return the value for the given context. The selector will then
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   486
    return 1 if the value is expected, else 0.
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   487
    """
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   488
    def __init__(self, *expected):
774
48cb1f42e79c tell on which class the assertion's failed
sylvain.thenault@logilab.fr
parents: 770
diff changeset
   489
        assert expected, self
766
33ede72b22b8 fix match_user_groups, appobject_selectable, searchstate_accept* compat selectors
sylvain.thenault@logilab.fr
parents: 764
diff changeset
   490
        self.expected = frozenset(expected)
779
8510e14335e1 implements some str, fix implements selector, test and fixes
sylvain.thenault@logilab.fr
parents: 774
diff changeset
   491
8510e14335e1 implements some str, fix implements selector, test and fixes
sylvain.thenault@logilab.fr
parents: 774
diff changeset
   492
    def __str__(self):
8510e14335e1 implements some str, fix implements selector, test and fixes
sylvain.thenault@logilab.fr
parents: 774
diff changeset
   493
        return '%s(%s)' % (self.__class__.__name__,
8510e14335e1 implements some str, fix implements selector, test and fixes
sylvain.thenault@logilab.fr
parents: 774
diff changeset
   494
                           ','.join(sorted(str(s) for s in self.expected)))
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   495
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   496
    @lltrace
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   497
    def __call__(self, cls, req, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   498
        if self._get_value(cls, req, **kwargs) in self.expected:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   499
            return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   500
        return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   501
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   502
    def _get_value(self, cls, req, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   503
        raise NotImplementedError()
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   504
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   505
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   506
# bare selectors ##############################################################
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   507
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   508
class match_kwargs(ExpectedValueSelector):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   509
    """Return non-zero score if parameter names specified as initializer
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   510
    arguments are specified in the input context. When multiple parameters are
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   511
    specified, all of them should be specified in the input context. Return a
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   512
    score corresponding to the number of expected parameters.
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   513
    """
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   514
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   515
    @lltrace
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   516
    def __call__(self, cls, req, **kwargs):
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   517
        for arg in self.expected:
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   518
            if not arg in kwargs:
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   519
                return 0
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   520
        return len(self.expected)
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   521
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   522
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   523
class appobject_selectable(Selector):
5147
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   524
    """Return 1 if another appobject is selectable using the same input context.
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   525
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   526
    Initializer arguments:
5147
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   527
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   528
    * `registry`, a registry name
5147
70181998897f more / cleaner / in code documentation of vreg, selectors and appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5143
diff changeset
   529
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   530
    * `regid`, an object identifier in this registry
1263
01152fffd593 backport default branch
sylvain.thenault@logilab.fr
parents: 1178
diff changeset
   531
    """
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   532
    def __init__(self, registry, regid):
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   533
        self.registry = registry
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   534
        self.regid = regid
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   535
2650
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2613
diff changeset
   536
    def __call__(self, cls, req, **kwargs):
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   537
        try:
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   538
            req.vreg[self.registry].select(self.regid, req, **kwargs)
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   539
            return 1
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   540
        except NoSelectableObject:
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   541
            return 0
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   542
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   543
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   544
# rset selectors ##############################################################
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   545
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   546
@objectify_selector
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   547
@lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   548
def none_rset(cls, req, rset=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   549
    """Return 1 if the result set is None (eg usually not specified)."""
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   550
    if rset is None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   551
        return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   552
    return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   553
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   554
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   555
# XXX == ~ none_rset
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   556
@objectify_selector
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   557
@lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   558
def any_rset(cls, req, rset=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   559
    """Return 1 for any result set, whatever the number of rows in it, even 0."""
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   560
    if rset is not None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   561
        return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   562
    return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   563
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   564
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   565
@objectify_selector
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   566
@lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   567
def nonempty_rset(cls, req, rset=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   568
    """Return 1 for result set containing one ore more rows."""
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   569
    if rset is not None and rset.rowcount:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   570
        return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   571
    return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   572
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   573
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   574
# XXX == ~ nonempty_rset
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   575
@objectify_selector
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   576
@lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   577
def empty_rset(cls, req, rset=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   578
    """Return 1 for result set which doesn't contain any row."""
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   579
    if rset is not None and rset.rowcount == 0:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   580
        return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   581
    return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   582
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   583
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   584
# XXX == multi_lines_rset(1)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   585
@objectify_selector
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   586
@lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   587
def one_line_rset(cls, req, rset=None, row=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   588
    """Return 1 if the result set is of size 1 or if a specific row in the
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   589
    result set is specified ('row' argument).
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   590
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   591
    if rset is not None and (row is not None or rset.rowcount == 1):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   592
        return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   593
    return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   594
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   595
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   596
class multi_lines_rset(Selector):
5452
4ac3ea9face9 [doc] typos
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   597
    """If `nb` is specified, return 1 if the result set has exactly `nb` row of
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   598
    result. Else (`nb` is None), return 1 if the result set contains *at least*
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   599
    two rows.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   600
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   601
    def __init__(self, nb=None):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   602
        self.expected = nb
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   603
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   604
    def match_expected(self, num):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   605
        if self.expected is None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   606
            return num > 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   607
        return num == self.expected
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   608
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   609
    @lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   610
    def __call__(self, cls, req, rset=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   611
        return rset is not None and self.match_expected(rset.rowcount)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   612
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   613
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   614
class multi_columns_rset(multi_lines_rset):
5452
4ac3ea9face9 [doc] typos
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   615
    """If `nb` is specified, return 1 if the result set has exactly `nb` column
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   616
    per row. Else (`nb` is None), return 1 if the result set contains *at least*
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   617
    two columns per row. Return 0 for empty result set.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   618
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   619
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   620
    @lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   621
    def __call__(self, cls, req, rset=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   622
        # 'or 0' since we *must not* return None
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   623
        return rset and self.match_expected(len(rset.rows[0])) or 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   624
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   625
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   626
@objectify_selector
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   627
@lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   628
def paginated_rset(cls, req, rset=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   629
    """Return 1 for result set with more rows than a page size.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   630
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   631
    Page size is searched in (respecting order):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   632
    * a `page_size` argument
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   633
    * a `page_size` form parameters
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   634
    * the :ref:`navigation.page-size` property
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   635
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   636
    if rset is None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   637
        return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   638
    page_size = kwargs.get('page_size')
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   639
    if page_size is None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   640
        page_size = req.form.get('page_size')
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   641
        if page_size is None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   642
            page_size = req.property_value('navigation.page-size')
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   643
        else:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   644
            page_size = int(page_size)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   645
    if rset.rowcount <= page_size:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   646
        return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   647
    return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   648
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   649
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   650
@objectify_selector
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   651
@lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   652
def sorted_rset(cls, req, rset=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   653
    """Return 1 for sorted result set (e.g. from an RQL query containing an
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   654
    :ref:ORDERBY clause.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   655
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   656
    if rset is None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   657
        return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   658
    rqlst = rset.syntax_tree()
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   659
    if len(rqlst.children) > 1 or not rqlst.children[0].orderby:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   660
        return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   661
    return 2
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   662
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   663
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   664
# XXX == multi_etypes_rset(1)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   665
@objectify_selector
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   666
@lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   667
def one_etype_rset(cls, req, rset=None, col=0, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   668
    """Return 1 if the result set contains entities which are all of the same
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   669
    type in the column specified by the `col` argument of the input context, or
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   670
    in column 0.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   671
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   672
    if rset is None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   673
        return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   674
    if len(rset.column_types(col)) != 1:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   675
        return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   676
    return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   677
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   678
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   679
class multi_etypes_rset(multi_lines_rset):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   680
    """If `nb` is specified, return 1 if the result set contains `nb` different
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   681
    types of entities in the column specified by the `col` argument of the input
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   682
    context, or in column 0. If `nb` is None, return 1 if the result set contains
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   683
    *at least* two different types of entities.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   684
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   685
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   686
    @lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   687
    def __call__(self, cls, req, rset=None, col=0, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   688
        # 'or 0' since we *must not* return None
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   689
        return rset and self.match_expected(len(rset.column_types(col))) or 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   690
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   691
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   692
# entity selectors #############################################################
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   693
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   694
class non_final_entity(EClassSelector):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   695
    """Return 1 for entity of a non final entity type(s). Remember, "final"
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   696
    entity types are String, Int, etc... This is equivalent to
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   697
    `implements('Any')` but more optimized.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   698
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   699
    See :class:`~cubicweb.selectors.EClassSelector` documentation for entity
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   700
    class lookup / score rules according to the input context.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   701
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   702
    def score(self, cls, req, etype):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   703
        if etype in BASE_TYPES:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   704
            return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   705
        return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   706
4664
bd5ecd5b9494 #714109: [selectors] non_final_entity should implement score_class
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4545
diff changeset
   707
    def score_class(self, eclass, req):
bd5ecd5b9494 #714109: [selectors] non_final_entity should implement score_class
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4545
diff changeset
   708
        return 1 # necessarily true if we're there
bd5ecd5b9494 #714109: [selectors] non_final_entity should implement score_class
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4545
diff changeset
   709
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   710
1301
4596ce9bb4dc EntitySelector base class now understand 'entity' in kwargs, new entity_implements selector
sylvain.thenault@logilab.fr
parents: 1263
diff changeset
   711
class implements(ImplementsMixIn, EClassSelector):
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   712
    """Return non-zero score for entity that are of the given type(s) or
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   713
    implements at least one of the given interface(s). If multiple arguments are
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   714
    given, matching one of them is enough.
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   715
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   716
    Entity types should be given as string, the corresponding class will be
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   717
    fetched from the entity types registry at selection time.
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   718
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   719
    See :class:`~cubicweb.selectors.EClassSelector` documentation for entity
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   720
    class lookup / score rules according to the input context.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   721
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   722
    .. note:: when interface is an entity class, the score will reflect class
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   723
              proximity so the most specific object will be selected.
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   724
    """
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   725
    def score_class(self, eclass, req):
2822
f26578339214 deprecate appobject.vreg and rename appobject instance attributes using cw_ prefix
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2819
diff changeset
   726
        return self.score_interfaces(req, eclass, eclass)
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   727
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   728
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   729
class score_entity(EntitySelector):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   730
    """Return score according to an arbitrary function given as argument which
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   731
    will be called with input content entity as argument.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   732
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   733
    This is a very useful selector that will usually interest you since it
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   734
    allows a lot of things without having to write a specific selector.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   735
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   736
    See :class:`~cubicweb.selectors.EntitySelector` documentation for entity
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   737
    lookup / score rules according to the input context.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   738
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   739
    def __init__(self, scorefunc, once_is_enough=False):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   740
        super(score_entity, self).__init__(once_is_enough)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   741
        def intscore(*args, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   742
            score = scorefunc(*args, **kwargs)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   743
            if not score:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   744
                return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   745
            if isinstance(score, (int, long)):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   746
                return score
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   747
            return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   748
        self.score_entity = intscore
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   749
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   750
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   751
class relation_possible(EntitySelector):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   752
    """Return 1 for entity that supports the relation, provided that the
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   753
    request's user may do some `action` on it (see below).
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   754
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   755
    The relation is specified by the following initializer arguments:
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   756
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   757
    * `rtype`, the name of the relation
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   758
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   759
    * `role`, the role of the entity in the relation, either 'subject' or
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   760
      'object', default to 'subject'
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   761
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   762
    * `target_etype`, optional name of an entity type that should be supported
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   763
      at the other end of the relation
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   764
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   765
    * `action`, a relation schema action (e.g. one of 'read', 'add', 'delete',
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   766
      default to 'read') which must be granted to the user, else a 0 score will
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   767
      be returned
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   768
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   769
    * `strict`, boolean (default to False) telling what to do when the user has
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   770
      not globally the permission for the action (eg the action is not granted
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   771
      to one of the user's groups)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   772
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   773
      - when strict is False, if there are some local role defined for this
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   774
        action (e.g. using rql expressions), then the permission will be
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   775
        considered as granted
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   776
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   777
      - when strict is True, then the permission will be actually checked for
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   778
        each entity
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   779
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   780
    Setting `strict` to True impacts performance for large result set since
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   781
    you'll then get the :class:`~cubicweb.selectors.EntitySelector` behaviour
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   782
    while otherwise you get the :class:`~cubicweb.selectors.EClassSelector`'s
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   783
    one. See those classes documentation for entity lookup / score rules
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   784
    according to the input context.
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   785
    """
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   786
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   787
    def __init__(self, rtype, role='subject', target_etype=None,
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   788
                 action='read', strict=False, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   789
        super(relation_possible, self).__init__(**kwargs)
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   790
        self.rtype = rtype
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   791
        self.role = role
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   792
        self.target_etype = target_etype
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   793
        self.action = action
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   794
        self.strict = strict
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   795
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   796
    # hack hack hack
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   797
    def __call__(self, cls, req, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   798
        if self.strict:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   799
            return EntitySelector.__call__(self, cls, req, **kwargs)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   800
        return EClassSelector.__call__(self, cls, req, **kwargs)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   801
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   802
    def score(self, *args):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   803
        if self.strict:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   804
            return EntitySelector.score(self, *args)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   805
        return EClassSelector.score(self, *args)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   806
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   807
    def _get_rschema(self, eclass):
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   808
        eschema = eclass.e_schema
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   809
        try:
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   810
            if self.role == 'object':
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   811
                return eschema.objrels[self.rtype]
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   812
            else:
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   813
                return eschema.subjrels[self.rtype]
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   814
        except KeyError:
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   815
            return None
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   816
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   817
    def score_class(self, eclass, req):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   818
        rschema = self._get_rschema(eclass)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   819
        if rschema is None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   820
            return 0 # relation not supported
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   821
        eschema = eclass.e_schema
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   822
        if self.target_etype is not None:
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   823
            try:
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3757
diff changeset
   824
                rdef = rschema.role_rdef(eschema, self.target_etype, self.role)
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3757
diff changeset
   825
                if not rdef.may_have_permission(self.action, req):
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3757
diff changeset
   826
                    return 0
1132
96752791c2b6 pylint cleanup
sylvain.thenault@logilab.fr
parents: 1037
diff changeset
   827
            except KeyError:
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   828
                return 0
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3757
diff changeset
   829
        else:
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3757
diff changeset
   830
            return rschema.may_have_permission(self.action, req, eschema, self.role)
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   831
        return 1
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   832
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   833
    def score_entity(self, entity):
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   834
        rschema = self._get_rschema(entity)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   835
        if rschema is None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   836
            return 0 # relation not supported
4234
0adf45697422 if specified, benefit from target_etype information in the [partial_]add_relation selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4181
diff changeset
   837
        if self.target_etype is not None:
0adf45697422 if specified, benefit from target_etype information in the [partial_]add_relation selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4181
diff changeset
   838
            rschema = rschema.role_rdef(entity.e_schema, self.target_etype, self.role)
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   839
        if self.role == 'subject':
3378
2f25f701301d use ._cw instead of req on appobject classes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3369
diff changeset
   840
            if not rschema.has_perm(entity._cw, 'add', fromeid=entity.eid):
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   841
                return 0
3378
2f25f701301d use ._cw instead of req on appobject classes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3369
diff changeset
   842
        elif not rschema.has_perm(entity._cw, 'add', toeid=entity.eid):
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   843
            return 0
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   844
        return 1
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   845
876
f652660ae9a6 use relation_possible from within has_relation, fix another bug
sylvain.thenault@logilab.fr
parents: 839
diff changeset
   846
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   847
class partial_relation_possible(PartialSelectorMixIn, relation_possible):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   848
    """Same as :class:~`cubicweb.selectors.relation_possible`, but will look for
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   849
    attributes of the selected class to get information which is otherwise
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   850
    expected by the initializer, except for `action` and `strict` which are kept
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   851
    as initializer arguments.
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   852
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   853
    This is useful to predefine selector of an abstract class designed to be
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   854
    customized.
838
f2c56312b03a rename abstract_* selectors into partial_* + add docstrings
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 835
diff changeset
   855
    """
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   856
    def __init__(self, action='read', **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   857
        super(partial_relation_possible, self).__init__(None, None, None,
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   858
                                                        action, **kwargs)
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   859
838
f2c56312b03a rename abstract_* selectors into partial_* + add docstrings
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 835
diff changeset
   860
    def complete(self, cls):
782
01801a10c567 introduce abstract selectors to get rid of the my_selector() contagion
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 774
diff changeset
   861
        self.rtype = cls.rtype
01801a10c567 introduce abstract selectors to get rid of the my_selector() contagion
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 774
diff changeset
   862
        self.role = role(cls)
4234
0adf45697422 if specified, benefit from target_etype information in the [partial_]add_relation selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4181
diff changeset
   863
        self.target_etype = getattr(cls, 'etype', None)
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   864
        if self.target_etype is not None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   865
            warn('[3.6] please rename etype to target_etype on %s' % cls,
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   866
                 DeprecationWarning)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   867
        else:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   868
            self.target_etype = getattr(cls, 'target_etype', None)
782
01801a10c567 introduce abstract selectors to get rid of the my_selector() contagion
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 774
diff changeset
   869
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   870
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   871
class has_related_entities(EntitySelector):
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   872
    """Return 1 if entity support the specified relation and has some linked
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   873
    entities by this relation , optionaly filtered according to the specified
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   874
    target type.
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   875
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   876
    The relation is specified by the following initializer arguments:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   877
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   878
    * `rtype`, the name of the relation
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   879
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   880
    * `role`, the role of the entity in the relation, either 'subject' or
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   881
      'object', default to 'subject'.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   882
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   883
    * `target_etype`, optional name of an entity type that should be found
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   884
      at the other end of the relation
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   885
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   886
    See :class:`~cubicweb.selectors.EntitySelector` documentation for entity
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   887
    lookup / score rules according to the input context.
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   888
    """
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   889
    def __init__(self, rtype, role='subject', target_etype=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   890
        super(has_related_entities, self).__init__(**kwargs)
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   891
        self.rtype = rtype
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   892
        self.role = role
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   893
        self.target_etype = target_etype
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   894
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   895
    def score_entity(self, entity):
876
f652660ae9a6 use relation_possible from within has_relation, fix another bug
sylvain.thenault@logilab.fr
parents: 839
diff changeset
   896
        relpossel = relation_possible(self.rtype, self.role, self.target_etype)
3378
2f25f701301d use ._cw instead of req on appobject classes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3369
diff changeset
   897
        if not relpossel.score_class(entity.__class__, entity._cw):
876
f652660ae9a6 use relation_possible from within has_relation, fix another bug
sylvain.thenault@logilab.fr
parents: 839
diff changeset
   898
            return 0
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   899
        rset = entity.related(self.rtype, self.role)
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   900
        if self.target_etype:
1011
22812cfe36b4 fix w/ rset with more than one column
sylvain.thenault@logilab.fr
parents: 876
diff changeset
   901
            return any(r for r in rset.description if r[0] == self.target_etype)
835
7dcb11dd443e fix relation_possible, ensure we return int
sylvain.thenault@logilab.fr
parents: 833
diff changeset
   902
        return rset and 1 or 0
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   903
833
8c6bfd9158fb bw compat for selection for creation forms
sylvain.thenault@logilab.fr
parents: 828
diff changeset
   904
838
f2c56312b03a rename abstract_* selectors into partial_* + add docstrings
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 835
diff changeset
   905
class partial_has_related_entities(PartialSelectorMixIn, has_related_entities):
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   906
    """Same as :class:~`cubicweb.selectors.has_related_entity`, but will look
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   907
    for attributes of the selected class to get information which is otherwise
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   908
    expected by the initializer.
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   909
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   910
    This is useful to predefine selector of an abstract class designed to be
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   911
    customized.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   912
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   913
    def __init__(self, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   914
        super(partial_has_related_entities, self).__init__(None, None, None,
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   915
                                                           **kwargs)
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   916
838
f2c56312b03a rename abstract_* selectors into partial_* + add docstrings
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 835
diff changeset
   917
    def complete(self, cls):
782
01801a10c567 introduce abstract selectors to get rid of the my_selector() contagion
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 774
diff changeset
   918
        self.rtype = cls.rtype
01801a10c567 introduce abstract selectors to get rid of the my_selector() contagion
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 774
diff changeset
   919
        self.role = role(cls)
01801a10c567 introduce abstract selectors to get rid of the my_selector() contagion
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 774
diff changeset
   920
        self.target_etype = getattr(cls, 'etype', None)
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   921
        if self.target_etype is not None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   922
            warn('[3.6] please rename etype to target_etype on %s' % cls,
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   923
                 DeprecationWarning)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   924
        else:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   925
            self.target_etype = getattr(cls, 'target_etype', None)
782
01801a10c567 introduce abstract selectors to get rid of the my_selector() contagion
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 774
diff changeset
   926
01801a10c567 introduce abstract selectors to get rid of the my_selector() contagion
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 774
diff changeset
   927
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   928
class has_permission(EntitySelector):
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   929
    """Return non-zero score if request's user has the permission to do the
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   930
    requested action on the entity. `action` is an entity schema action (eg one
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   931
    of 'read', 'add', 'delete', 'update').
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   932
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   933
    Here are entity lookup / scoring rules:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   934
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   935
    * if `entity` is specified, check permission is granted for this entity
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   936
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   937
    * elif `row` is specified, check permission is granted for the entity found
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   938
      in the specified cell
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   939
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   940
    * else check permission is granted for each entity found in the column
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   941
      specified specified by the `col` argument or in column 0
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   942
    """
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   943
    def __init__(self, action):
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   944
        self.action = action
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   945
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   946
    # don't use EntitySelector.__call__ but this optimized implementation to
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   947
    # avoid considering each entity when it's not necessary
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   948
    @lltrace
2161
200481e7b156 prepare time where it won't be mandatory to give rset to select()
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2003
diff changeset
   949
    def __call__(self, cls, req, rset=None, row=None, col=0, **kwargs):
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   950
        if kwargs.get('entity'):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   951
            return self.score_entity(kwargs['entity'])
788
d62fb3e9797d protect against None rset
sylvain.thenault@logilab.fr
parents: 784
diff changeset
   952
        if rset is None:
d62fb3e9797d protect against None rset
sylvain.thenault@logilab.fr
parents: 784
diff changeset
   953
            return 0
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   954
        user = req.user
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   955
        action = self.action
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   956
        if row is None:
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   957
            score = 0
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   958
            need_local_check = []
2816
85f7502d32be access schema through req.vreg
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2797
diff changeset
   959
            geteschema = req.vreg.schema.eschema
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   960
            for etype in rset.column_types(0):
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   961
                if etype in BASE_TYPES:
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   962
                    return 0
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   963
                eschema = geteschema(etype)
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   964
                if not user.matching_groups(eschema.get_groups(action)):
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   965
                    if eschema.has_local_role(action):
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   966
                        # have to ckeck local roles
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   967
                        need_local_check.append(eschema)
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   968
                        continue
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   969
                    else:
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   970
                        # even a local role won't be enough
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   971
                        return 0
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   972
                score += 1
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   973
            if need_local_check:
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   974
                # check local role for entities of necessary types
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   975
                for i, row in enumerate(rset):
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   976
                    if not rset.description[i][0] in need_local_check:
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   977
                        continue
652
603c782dc092 various SyntaxErrors / missing import fixes + reorganization of the `registered` classmethod
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 650
diff changeset
   978
                    if not self.score(req, rset, i, col):
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   979
                        return 0
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   980
                score += 1
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   981
            return score
876
f652660ae9a6 use relation_possible from within has_relation, fix another bug
sylvain.thenault@logilab.fr
parents: 839
diff changeset
   982
        return self.score(req, rset, row, col)
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
   983
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   984
    def score_entity(self, entity):
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   985
        if entity.has_perm(self.action):
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   986
            return 1
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   987
        return 0
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   988
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   989
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
   990
class has_add_permission(EClassSelector):
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   991
    """Return 1 if request's user has the add permission on entity type
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   992
    specified in the `etype` initializer argument, or according to entity found
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   993
    in the input content if not specified.
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
   994
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   995
    It also check that then entity type is not a strict subobject (e.g. may only
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   996
    be used as a composed of another entity).
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   997
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   998
    See :class:`~cubicweb.selectors.EClassSelector` documentation for entity
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
   999
    class lookup / score rules according to the input context when `etype` is
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1000
    not specified.
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
  1001
    """
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1002
    def __init__(self, etype=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1003
        super(has_add_permission, self).__init__(**kwargs)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1004
        self.etype = etype
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1005
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1006
    @lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1007
    def __call__(self, cls, req, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1008
        if self.etype is None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1009
            return super(has_add_permission, self).__call__(cls, req, **kwargs)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1010
        return self.score(cls, req, self.etype)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1011
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1012
    def score_class(self, eclass, req):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1013
        eschema = eclass.e_schema
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1014
        if eschema.final or eschema.is_subobject(strict=True) \
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1015
               or not eschema.has_perm(req, 'add'):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1016
            return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1017
        return 1
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
  1018
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
  1019
640
8e64f12be69c drop EntityAction usage in cw, upgrade rql_condition and friends
sylvain.thenault@logilab.fr
parents: 634
diff changeset
  1020
class rql_condition(EntitySelector):
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1021
    """Return non-zero score if arbitrary rql specified in `expression`
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1022
    initializer argument return some results for entity found in the input
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1023
    context. Returned score is the number of items returned by the rql
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
  1024
    condition.
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
  1025
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1026
    `expression` is expected to be a string containing an rql expression, which
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1027
    must use 'X' variable to represent the context entity and may use 'U' to
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1028
    represent the request's user.
650
75b4c661f71b proper documentation, some bug fixes, upgrade some selectors
sylvain.thenault@logilab.fr
parents: 649
diff changeset
  1029
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1030
    See :class:`~cubicweb.selectors.EntitySelector` documentation for entity
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1031
    lookup / score rules according to the input context.
649
e5956e9ebef1 more doc, upgrade but_etype and appobject_selectable selectors
sylvain.thenault@logilab.fr
parents: 640
diff changeset
  1032
    """
766
33ede72b22b8 fix match_user_groups, appobject_selectable, searchstate_accept* compat selectors
sylvain.thenault@logilab.fr
parents: 764
diff changeset
  1033
    def __init__(self, expression, once_is_enough=False):
33ede72b22b8 fix match_user_groups, appobject_selectable, searchstate_accept* compat selectors
sylvain.thenault@logilab.fr
parents: 764
diff changeset
  1034
        super(rql_condition, self).__init__(once_is_enough)
649
e5956e9ebef1 more doc, upgrade but_etype and appobject_selectable selectors
sylvain.thenault@logilab.fr
parents: 640
diff changeset
  1035
        if 'U' in frozenset(split_expression(expression)):
640
8e64f12be69c drop EntityAction usage in cw, upgrade rql_condition and friends
sylvain.thenault@logilab.fr
parents: 634
diff changeset
  1036
            rql = 'Any X WHERE X eid %%(x)s, U eid %%(u)s, %s' % expression
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
  1037
        else:
640
8e64f12be69c drop EntityAction usage in cw, upgrade rql_condition and friends
sylvain.thenault@logilab.fr
parents: 634
diff changeset
  1038
            rql = 'Any X WHERE X eid %%(x)s, %s' % expression
8e64f12be69c drop EntityAction usage in cw, upgrade rql_condition and friends
sylvain.thenault@logilab.fr
parents: 634
diff changeset
  1039
        self.rql = rql
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
  1040
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1041
    def __repr__(self):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1042
        return u'<rql_condition "%s" at %x>' % (self.rql, id(self))
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1043
640
8e64f12be69c drop EntityAction usage in cw, upgrade rql_condition and friends
sylvain.thenault@logilab.fr
parents: 634
diff changeset
  1044
    def score(self, req, rset, row, col):
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
  1045
        try:
764
9de67b681624 some test fixes
sylvain.thenault@logilab.fr
parents: 759
diff changeset
  1046
            return len(req.execute(self.rql, {'x': rset[row][col],
5174
78438ad513ca #759035: Automate addition of eid cachekey in RQL analysis
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5147
diff changeset
  1047
                                              'u': req.user.eid}))
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
  1048
        except Unauthorized:
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
  1049
            return 0
649
e5956e9ebef1 more doc, upgrade but_etype and appobject_selectable selectors
sylvain.thenault@logilab.fr
parents: 640
diff changeset
  1050
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1051
# logged user selectors ########################################################
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1052
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1053
@objectify_selector
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1054
@lltrace
5223
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
  1055
def no_cnx(cls, req, rset, *args, **kwargs):
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
  1056
    """Return 1 if the web session has no connection set. This occurs when
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
  1057
    anonymous access is not allowed and user isn't authenticated.
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
  1058
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
  1059
    May only be used on the web side, not on the data repository side.
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
  1060
    """
5244
5467674ad101 [web] put a fake object that raise Unauthorized on any attribute access as req.cnx and req._user, so we are properly asked to authenticated on any view that tries to do something with one of those attributes (instead of doing defensive programming everywhere we're doing that)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5223
diff changeset
  1061
    if not req.cnx:
5223
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
  1062
        return 1
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
  1063
    return 0
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
  1064
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
  1065
@objectify_selector
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
  1066
@lltrace
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1067
def authenticated_user(cls, req, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1068
    """Return 1 if the user is authenticated (e.g. not the anonymous user).
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1069
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1070
    May only be used on the web side, not on the data repository side.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1071
    """
5223
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
  1072
    if req.session.anonymous_session:
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1073
        return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1074
    return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1075
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1076
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1077
# XXX == ~ authenticated_user()
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1078
def anonymous_user():
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1079
    """Return 1 if the user is not authenticated (e.g. is the anonymous user).
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1080
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1081
    May only be used on the web side, not on the data repository side.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1082
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1083
    return ~ authenticated_user()
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1084
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1085
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1086
class match_user_groups(ExpectedValueSelector):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1087
    """Return a non-zero score if request's user is in at least one of the
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1088
    groups given as initializer argument. Returned score is the number of groups
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1089
    in which the user is.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1090
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1091
    If the special 'owners' group is given and `rset` is specified in the input
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1092
    context:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1093
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1094
    * if `row` is specified check the entity at the given `row`/`col` (default
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1095
      to 0) is owned by the user
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1096
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1097
    * else check all entities in `col` (default to 0) are owned by the user
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1098
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1099
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1100
    @lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1101
    def __call__(self, cls, req, rset=None, row=None, col=0, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1102
        user = req.user
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1103
        if user is None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1104
            return int('guests' in self.expected)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1105
        score = user.matching_groups(self.expected)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1106
        if not score and 'owners' in self.expected and rset:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1107
            if row is not None:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1108
                if not user.owns(rset[row][col]):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1109
                    return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1110
                score = 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1111
            else:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1112
                score = all(user.owns(r[col]) for r in rset)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1113
        return score
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1114
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1115
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1116
# Web request selectors ########################################################
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1117
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1118
@objectify_selector
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1119
@lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1120
def primary_view(cls, req, view=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1121
    """Return 1 if:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1122
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1123
    * *no view is specified* in the input context
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1124
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1125
    * a view is specified and its `.is_primary()` method return True
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1126
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1127
    This selector is usually used by contextual components that only want to
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1128
    appears for the primary view of an entity.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1129
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1130
    if view is not None and not view.is_primary():
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1131
        return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1132
    return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1133
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1134
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1135
class match_view(ExpectedValueSelector):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1136
    """Return 1 if a view is specified an as its registry id is in one of the
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1137
    expected view id given to the initializer.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1138
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1139
    @lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1140
    def __call__(self, cls, req, view=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1141
        if view is None or not view.__regid__ in self.expected:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1142
            return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1143
        return 1
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
  1144
2084
923788d1f9c6 optional rset, those prototype could be simplified once bw compat for non named rset will be dropped
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2082
diff changeset
  1145
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1146
@objectify_selector
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1147
@lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1148
def match_context_prop(cls, req, context=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1149
    """Return 1 if:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1150
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1151
    * no `context` is specified in input context (take care to confusion, here
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1152
      `context` refers to a string given as an argument to the input context...)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1153
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1154
    * specified `context` is matching the context property value for the
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1155
      appobject using this selector
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1156
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1157
    * the appobject's context property value is None
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1158
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1159
    This selector is usually used by contextual components that want to appears
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1160
    in a configurable place.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1161
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1162
    if context is None:
4509
a17033cfc892 when no context specified, should return non-zero score as documented
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4462
diff changeset
  1163
        return 1
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1164
    propval = req.property_value('%s.%s.context' % (cls.__registry__,
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1165
                                                    cls.__regid__))
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1166
    if not propval:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1167
        propval = cls.context
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1168
    if propval and context != propval:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1169
        return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1170
    return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1171
1474
716f0742ee7f delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1472
diff changeset
  1172
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1173
class match_search_state(ExpectedValueSelector):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1174
    """Return 1 if the current request search state is in one of the expected
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1175
    states given to the initializer.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1176
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1177
    Known search states are either 'normal' or 'linksearch' (eg searching for an
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1178
    object to create a relation with another).
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1179
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1180
    This selector is usually used by action that want to appears or not according
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1181
    to the ui search state.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1182
    """
649
e5956e9ebef1 more doc, upgrade but_etype and appobject_selectable selectors
sylvain.thenault@logilab.fr
parents: 640
diff changeset
  1183
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1184
    @lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1185
    def __call__(self, cls, req, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1186
        try:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1187
            if not req.search_state[0] in self.expected:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1188
                return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1189
        except AttributeError:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1190
            return 1 # class doesn't care about search state, accept it
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1191
        return 1
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1192
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1193
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1194
class match_form_params(ExpectedValueSelector):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1195
    """Return non-zero score if parameter names specified as initializer
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1196
    arguments are specified in request's form parameters. When multiple
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1197
    parameters are specified, all of them should be found in req.form. Return a
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1198
    score corresponding to the number of expected parameters.
634
0badd061ce0f move cubicweb.common.selectors to cubicweb.selectors
sylvain.thenault@logilab.fr
parents:
diff changeset
  1199
    """
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1200
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1201
    @lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1202
    def __call__(self, cls, req, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1203
        for param in self.expected:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1204
            if not param in req.form:
3276
4480887772a3 [selectors] score_entity selector now ensures an int score is returned
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2972
diff changeset
  1205
                return 0
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1206
        return len(self.expected)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1207
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1208
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1209
class specified_etype_implements(implements):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1210
    """Return non-zero score if the entity type specified by an 'etype' key
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1211
    searched in (by priority) input context kwargs and request form parameters
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1212
    match a known entity type (case insensitivly), and it's associated entity
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1213
    class is of one of the type(s) given to the initializer or implements at
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1214
    least one of the given interfaces. If multiple arguments are given, matching
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1215
    one of them is enough.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1216
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1217
    Entity types should be given as string, the corresponding class will be
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1218
    fetched from the entity types registry at selection time.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1219
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1220
    .. note:: when interface is an entity class, the score will reflect class
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1221
              proximity so the most specific object will be selected.
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1222
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1223
    This selector is usually used by views holding entity creation forms (since
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1224
    we've no result set to work on).
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1225
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1226
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1227
    @lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1228
    def __call__(self, cls, req, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1229
        try:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1230
            etype = kwargs['etype']
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1231
        except KeyError:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1232
            try:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1233
                etype = req.form['etype']
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1234
            except KeyError:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1235
                return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1236
            else:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1237
                # only check this is a known type if etype comes from req.form,
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1238
                # else we want the error to propagate
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1239
                try:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1240
                    etype = req.vreg.case_insensitive_etypes[etype.lower()]
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1241
                    req.form['etype'] = etype
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1242
                except KeyError:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1243
                    return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1244
        score = self.score_class(req.vreg['etypes'].etype_class(etype), req)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1245
        if score:
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1246
            eschema = req.vreg.schema.eschema(etype)
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1247
            if eschema.has_local_role('add') or eschema.has_perm(req, 'add'):
3276
4480887772a3 [selectors] score_entity selector now ensures an int score is returned
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2972
diff changeset
  1248
                return score
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1249
        return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1250
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1251
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1252
# Other selectors ##############################################################
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1253
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1254
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1255
class match_transition(ExpectedValueSelector):
4545
9b7b3303c515 fix match_transition selector: for instance w/ forge version change state form overiding, we want the form with the publication_date selected by the editcontroller, whatever the transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4509
diff changeset
  1256
    """Return 1 if:
9b7b3303c515 fix match_transition selector: for instance w/ forge version change state form overiding, we want the form with the publication_date selected by the editcontroller, whatever the transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4509
diff changeset
  1257
9b7b3303c515 fix match_transition selector: for instance w/ forge version change state form overiding, we want the form with the publication_date selected by the editcontroller, whatever the transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4509
diff changeset
  1258
    * a `transition` argument is found in the input context which
9b7b3303c515 fix match_transition selector: for instance w/ forge version change state form overiding, we want the form with the publication_date selected by the editcontroller, whatever the transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4509
diff changeset
  1259
      has a `.name` attribute matching one of the expected names given to the
9b7b3303c515 fix match_transition selector: for instance w/ forge version change state form overiding, we want the form with the publication_date selected by the editcontroller, whatever the transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4509
diff changeset
  1260
      initializer
9b7b3303c515 fix match_transition selector: for instance w/ forge version change state form overiding, we want the form with the publication_date selected by the editcontroller, whatever the transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4509
diff changeset
  1261
9b7b3303c515 fix match_transition selector: for instance w/ forge version change state form overiding, we want the form with the publication_date selected by the editcontroller, whatever the transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4509
diff changeset
  1262
    * no transition specified.
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1263
    """
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1264
    @lltrace
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1265
    def __call__(self, cls, req, transition=None, **kwargs):
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1266
        # XXX check this is a transition that apply to the object?
4545
9b7b3303c515 fix match_transition selector: for instance w/ forge version change state form overiding, we want the form with the publication_date selected by the editcontroller, whatever the transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4509
diff changeset
  1267
        if transition is None:
9b7b3303c515 fix match_transition selector: for instance w/ forge version change state form overiding, we want the form with the publication_date selected by the editcontroller, whatever the transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4509
diff changeset
  1268
            return 1
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1269
        if transition is not None and getattr(transition, 'name', None) in self.expected:
3276
4480887772a3 [selectors] score_entity selector now ensures an int score is returned
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2972
diff changeset
  1270
            return 1
4462
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1271
        return 0
c57c8176b8c2 reorganize, cleanup and properly document base selectors. Kill the may_add_relation selector.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4458
diff changeset
  1272
5044
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1273
class is_in_state(score_entity):
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1274
    """return 1 if entity is in one of the states given as argument list
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1275
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1276
    you should use this instead of your own score_entity x: x.state == 'bla'
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1277
    selector to avoid some gotchas:
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1278
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1279
    * possible views gives a fake entity with no state
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1280
    * you must use the latest tr info, not entity.state for repository side
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1281
      checking of the current state
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1282
    """
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1283
    def __init__(self, *states):
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1284
        def score(entity, states=set(states)):
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1285
            try:
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1286
                return entity.latest_trinfo().new_state.name in states
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1287
            except AttributeError:
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1288
                return None
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1289
        super(is_in_state, self).__init__(score)
1d9bef4a2b0c [selectors] new is_in_state select to avoid common error when writing state based selector
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4833
diff changeset
  1290
2972
23418c13e024 Backed out changeset d83f5d96e1d7
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2970
diff changeset
  1291
4071
e19e586cc74e deprecates entity_implements / but_etype selectors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4026
diff changeset
  1292
## deprecated stuff ############################################################
2972
23418c13e024 Backed out changeset d83f5d96e1d7
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2970
diff changeset
  1293
4071
e19e586cc74e deprecates entity_implements / but_etype selectors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4026
diff changeset
  1294
entity_implements = class_renamed('entity_implements', implements)
2972
23418c13e024 Backed out changeset d83f5d96e1d7
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2970
diff changeset
  1295
4081
64548076add4 avoid infinite recursion error
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4071
diff changeset
  1296
class _but_etype(EntitySelector):
4071
e19e586cc74e deprecates entity_implements / but_etype selectors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4026
diff changeset
  1297
    """accept if the given entity types are not found in the result set.
2972
23418c13e024 Backed out changeset d83f5d96e1d7
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2970
diff changeset
  1298
4071
e19e586cc74e deprecates entity_implements / but_etype selectors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4026
diff changeset
  1299
    See `EntitySelector` documentation for behaviour when row is not specified.
2972
23418c13e024 Backed out changeset d83f5d96e1d7
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2970
diff changeset
  1300
4071
e19e586cc74e deprecates entity_implements / but_etype selectors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4026
diff changeset
  1301
    :param *etypes: entity types (`basestring`) which should be refused
e19e586cc74e deprecates entity_implements / but_etype selectors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4026
diff changeset
  1302
    """
e19e586cc74e deprecates entity_implements / but_etype selectors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4026
diff changeset
  1303
    def __init__(self, *etypes):
4102
5ba6df5fcb07 missing underscore leads to infinite recursion error
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4081
diff changeset
  1304
        super(_but_etype, self).__init__()
4071
e19e586cc74e deprecates entity_implements / but_etype selectors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4026
diff changeset
  1305
        self.but_etypes = etypes
2972
23418c13e024 Backed out changeset d83f5d96e1d7
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2970
diff changeset
  1306
4071
e19e586cc74e deprecates entity_implements / but_etype selectors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4026
diff changeset
  1307
    def score(self, req, rset, row, col):
e19e586cc74e deprecates entity_implements / but_etype selectors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4026
diff changeset
  1308
        if rset.description[row][col] in self.but_etypes:
2972
23418c13e024 Backed out changeset d83f5d96e1d7
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2970
diff changeset
  1309
            return 0
4071
e19e586cc74e deprecates entity_implements / but_etype selectors
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4026
diff changeset
  1310
        return 1
2972
23418c13e024 Backed out changeset d83f5d96e1d7
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2970
diff changeset
  1311
4081
64548076add4 avoid infinite recursion error
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4071
diff changeset
  1312
but_etype = class_renamed('but_etype', _but_etype, 'use ~implements(*etypes) instead')
4320
4efd4c306746 closes #345410: two_lines_rset, two_cols_rset, two_etypes_rset are badly named
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4264
diff changeset
  1313
4efd4c306746 closes #345410: two_lines_rset, two_cols_rset, two_etypes_rset are badly named
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4264
diff changeset
  1314
4efd4c306746 closes #345410: two_lines_rset, two_cols_rset, two_etypes_rset are badly named
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4264
diff changeset
  1315
# XXX deprecated the one_* variants of selectors below w/ multi_xxx(nb=1)?
4efd4c306746 closes #345410: two_lines_rset, two_cols_rset, two_etypes_rset are badly named
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4264
diff changeset
  1316
#     take care at the implementation though (looking for the 'row' argument's
4efd4c306746 closes #345410: two_lines_rset, two_cols_rset, two_etypes_rset are badly named
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4264
diff changeset
  1317
#     value)
4efd4c306746 closes #345410: two_lines_rset, two_cols_rset, two_etypes_rset are badly named
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4264
diff changeset
  1318
two_lines_rset = class_renamed('two_lines_rset', multi_lines_rset)
4efd4c306746 closes #345410: two_lines_rset, two_cols_rset, two_etypes_rset are badly named
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4264
diff changeset
  1319
two_cols_rset = class_renamed('two_cols_rset', multi_columns_rset)
4efd4c306746 closes #345410: two_lines_rset, two_cols_rset, two_etypes_rset are badly named
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4264
diff changeset
  1320
two_etypes_rset = class_renamed('two_etypes_rset', multi_etypes_rset)