schema.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Fri, 11 Jun 2010 13:00:19 +0200
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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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"""classes to define schemas for CubicWeb
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"""
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__docformat__ = "restructuredtext en"
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_ = unicode
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import re
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from os.path import join
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from logging import getLogger
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from warnings import warn
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from logilab.common.decorators import cached, clear_cache, monkeypatch
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from logilab.common.logging_ext import set_log_methods
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from logilab.common.deprecation import deprecated, class_moved
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from logilab.common.graph import get_cycles
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from logilab.common.compat import any
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from yams import BadSchemaDefinition, buildobjs as ybo
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from yams.schema import Schema, ERSchema, EntitySchema, RelationSchema, \
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     RelationDefinitionSchema, PermissionMixIn, role_name
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from yams.constraints import BaseConstraint, FormatConstraint
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from yams.reader import (CONSTRAINTS, PyFileReader, SchemaLoader,
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                         obsolete as yobsolete, cleanup_sys_modules)
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from rql import parse, nodes, RQLSyntaxError, TypeResolverException
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import cubicweb
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from cubicweb import ETYPE_NAME_MAP, ValidationError, Unauthorized
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PURE_VIRTUAL_RTYPES = set(('identity', 'has_text',))
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VIRTUAL_RTYPES = set(('eid', 'identity', 'has_text',))
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# set of meta-relations available for every entity types
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META_RTYPES = set((
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    'owned_by', 'created_by', 'is', 'is_instance_of', 'identity',
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    'eid', 'creation_date', 'modification_date', 'has_text', 'cwuri',
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    ))
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SYSTEM_RTYPES = set(('require_permission', 'custom_workflow', 'in_state',
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                     'wf_info_for'))
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# set of entity and relation types used to build the schema
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SCHEMA_TYPES = set((
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    'CWEType', 'CWRType', 'CWAttribute', 'CWRelation',
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    'CWConstraint', 'CWConstraintType', 'RQLExpression',
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    'relation_type', 'from_entity', 'to_entity',
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    'constrained_by', 'cstrtype',
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    ))
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WORKFLOW_TYPES = set(('Transition', 'State', 'TrInfo', 'Workflow',
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                      'WorkflowTransition', 'BaseTransition',
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                      'SubWorkflowExitPoint'))
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INTERNAL_TYPES = set(('CWProperty', 'CWPermission', 'CWCache', 'ExternalUri'))
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_LOGGER = getLogger('cubicweb.schemaloader')
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# schema entities created from serialized schema have an eid rproperty
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ybo.ETYPE_PROPERTIES += ('eid',)
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ybo.RTYPE_PROPERTIES += ('eid',)
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ybo.RDEF_PROPERTIES += ('eid',)
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PUB_SYSTEM_ENTITY_PERMS = {
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    'read':   ('managers', 'users', 'guests',),
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    'add':    ('managers',),
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    'delete': ('managers',),
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    'update': ('managers',),
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    }
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PUB_SYSTEM_REL_PERMS = {
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    'read':   ('managers', 'users', 'guests',),
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    'add':    ('managers',),
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    'delete': ('managers',),
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    }
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PUB_SYSTEM_ATTR_PERMS = {
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    'read':   ('managers', 'users', 'guests',),
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    'update':    ('managers',),
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    }
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RO_REL_PERMS = {
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    'read':   ('managers', 'users', 'guests',),
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    'add':    (),
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    'delete': (),
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    }
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RO_ATTR_PERMS = {
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    'read':   ('managers', 'users', 'guests',),
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    'update': (),
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    }
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# XXX same algorithm as in reorder_cubes and probably other place,
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# may probably extract a generic function
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def order_eschemas(eschemas):
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    """return entity schemas ordered such that entity types which specializes an
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    other one appears after that one
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    """
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    graph = {}
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    for eschema in eschemas:
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        if eschema.specializes():
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            graph[eschema] = set((eschema.specializes(),))
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        else:
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            graph[eschema] = set()
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    cycles = get_cycles(graph)
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    if cycles:
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        cycles = '\n'.join(' -> '.join(cycle) for cycle in cycles)
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        raise Exception('cycles in entity schema specialization: %s'
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                        % cycles)
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    eschemas = []
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    while graph:
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        # sorted to get predictable results
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        for eschema, deps in sorted(graph.items()):
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            if not deps:
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                eschemas.append(eschema)
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                del graph[eschema]
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                for deps in graph.itervalues():
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                    try:
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                        deps.remove(eschema)
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                    except KeyError:
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                        continue
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    return eschemas
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0
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def bw_normalize_etype(etype):
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    if etype in ETYPE_NAME_MAP:
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        msg = '%s has been renamed to %s, please update your code' % (
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            etype, ETYPE_NAME_MAP[etype])
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        warn(msg, DeprecationWarning, stacklevel=4)
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        etype = ETYPE_NAME_MAP[etype]
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    return etype
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def display_name(req, key, form='', context=None):
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    """return a internationalized string for the key (schema entity or relation
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    name) in a given form
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    """
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    assert form in ('', 'plural', 'subject', 'object')
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    if form == 'subject':
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        form = ''
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    if form:
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        key = key + '_' + form
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    # ensure unicode
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    # .lower() in case no translation are available XXX done whatever a translation is there or not!
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    if context is not None:
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        return unicode(req.pgettext(context, key)).lower()
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    else:
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        return unicode(req._(key)).lower()
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__builtins__['display_name'] = deprecated('[3.4] display_name should be imported from cubicweb.schema')(display_name)
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# rql expression utilities function ############################################
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def guess_rrqlexpr_mainvars(expression):
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    defined = set(split_expression(expression))
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    mainvars = []
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    if 'S' in defined:
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        mainvars.append('S')
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    if 'O' in defined:
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        mainvars.append('O')
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    if 'U' in defined:
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        mainvars.append('U')
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    if not mainvars:
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        raise Exception('unable to guess selection variables')
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    return ','.join(sorted(mainvars))
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def split_expression(rqlstring):
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    for expr in rqlstring.split(','):
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        for noparen in expr.split('('):
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            for word in noparen.split():
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                yield word
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def normalize_expression(rqlstring):
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    """normalize an rql expression to ease schema synchronization (avoid
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    suppressing and reinserting an expression if only a space has been added/removed
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    for instance)
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    """
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    return u', '.join(' '.join(expr.split()) for expr in rqlstring.split(','))
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# Schema objects definition ###################################################
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def ERSchema_display_name(self, req, form='', context=None):
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    """return a internationalized string for the entity/relation type name in
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    a given form
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    """
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    return display_name(req, self.type, form, context)
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ERSchema.display_name = ERSchema_display_name
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@cached
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def get_groups(self, action):
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    """return the groups authorized to perform <action> on entities of
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    this type
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    :type action: str
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    :param action: the name of a permission
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    :rtype: tuple
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    :return: names of the groups with the given permission
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    """
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    assert action in self.ACTIONS, action
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    #assert action in self._groups, '%s %s' % (self, action)
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    try:
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        return frozenset(g for g in self.permissions[action] if isinstance(g, basestring))
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    except KeyError:
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        return ()
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PermissionMixIn.get_groups = get_groups
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@cached
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def get_rqlexprs(self, action):
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    """return the rql expressions representing queries to check the user is allowed
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    to perform <action> on entities of this type
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    :type action: str
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    :param action: the name of a permission
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    :rtype: tuple
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    :return: the rql expressions with the given permission
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    """
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    assert action in self.ACTIONS, action
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    #assert action in self._rqlexprs, '%s %s' % (self, action)
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    try:
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        return tuple(g for g in self.permissions[action] if not isinstance(g, basestring))
0
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    except KeyError:
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        return ()
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PermissionMixIn.get_rqlexprs = get_rqlexprs
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orig_set_action_permissions = PermissionMixIn.set_action_permissions
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def set_action_permissions(self, action, permissions):
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    """set the groups and rql expressions allowing to perform <action> on
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    entities of this type
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    :type action: str
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    :param action: the name of a permission
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    :type permissions: tuple
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    :param permissions: the groups and rql expressions allowing the given action
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    """
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    orig_set_action_permissions(self, action, tuple(permissions))
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    clear_cache(self, 'get_rqlexprs')
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    clear_cache(self, 'get_groups')
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PermissionMixIn.set_action_permissions = set_action_permissions
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def has_local_role(self, action):
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    """return true if the action *may* be granted localy (eg either rql
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    expressions or the owners group are used in security definition)
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    XXX this method is only there since we don't know well how to deal with
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    'add' action checking. Also find a better name would be nice.
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    """
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    assert action in self.ACTIONS, action
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    if self.get_rqlexprs(action):
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        return True
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    if action in ('update', 'delete'):
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        return 'owners' in self.get_groups(action)
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    return False
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PermissionMixIn.has_local_role = has_local_role
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def may_have_permission(self, action, req):
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    if action != 'read' and not (self.has_local_role('read') or
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                                 self.has_perm(req, 'read')):
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        return False
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    return self.has_local_role(action) or self.has_perm(req, action)
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PermissionMixIn.may_have_permission = may_have_permission
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def has_perm(self, session, action, **kwargs):
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    """return true if the action is granted globaly or localy"""
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    try:
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        self.check_perm(session, action, **kwargs)
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        return True
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    except Unauthorized:
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        return False
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PermissionMixIn.has_perm = has_perm
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def check_perm(self, session, action, **kwargs):
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    # NB: session may be a server session or a request object check user is
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    # in an allowed group, if so that's enough internal sessions should
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    # always stop there
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    groups = self.get_groups(action)
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    if session.user.matching_groups(groups):
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        return
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    # if 'owners' in allowed groups, check if the user actually owns this
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    # object, if so that's enough
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   296
    if 'owners' in groups and (
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          kwargs.get('creating')
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          or ('eid' in kwargs and session.user.owns(kwargs['eid']))):
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        return
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    # else if there is some rql expressions, check them
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    if any(rqlexpr.check(session, **kwargs)
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           for rqlexpr in self.get_rqlexprs(action)):
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        return
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    raise Unauthorized(action, str(self))
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PermissionMixIn.check_perm = check_perm
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   306
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   307
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RelationDefinitionSchema._RPROPERTIES['eid'] = None
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   309
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def rql_expression(self, expression, mainvars=None, eid=None):
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    """rql expression factory"""
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    if self.rtype.final:
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        return ERQLExpression(expression, mainvars, eid)
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    return RRQLExpression(expression, mainvars, eid)
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RelationDefinitionSchema.rql_expression = rql_expression
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   316
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orig_check_permission_definitions = RelationDefinitionSchema.check_permission_definitions
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def check_permission_definitions(self):
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    orig_check_permission_definitions(self)
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    schema = self.subject.schema
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   321
    for action, groups in self.permissions.iteritems():
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        for group_or_rqlexpr in groups:
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   323
            if action == 'read' and \
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                   isinstance(group_or_rqlexpr, RQLExpression):
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                msg = "can't use rql expression for read permission of %s"
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   326
                raise BadSchemaDefinition(msg % self)
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   327
            if self.final and isinstance(group_or_rqlexpr, RRQLExpression):
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   328
                msg = "can't use RRQLExpression on %s, use an ERQLExpression"
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                raise BadSchemaDefinition(msg % self)
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   330
            if not self.final and isinstance(group_or_rqlexpr, ERQLExpression):
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                msg = "can't use ERQLExpression on %s, use a RRQLExpression"
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                raise BadSchemaDefinition(msg % self)
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RelationDefinitionSchema.check_permission_definitions = check_permission_definitions
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class CubicWebEntitySchema(EntitySchema):
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    """a entity has a type, a set of subject and or object relations
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    the entity schema defines the possible relations for a given type and some
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    constraints on those relations
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    """
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    def __init__(self, schema=None, edef=None, eid=None, **kwargs):
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        super(CubicWebEntitySchema, self).__init__(schema, edef, **kwargs)
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        if eid is None and edef is not None:
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            eid = getattr(edef, 'eid', None)
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        self.eid = eid
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   346
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    def check_permission_definitions(self):
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        super(CubicWebEntitySchema, self).check_permission_definitions()
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        for groups in self.permissions.itervalues():
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            for group_or_rqlexpr in groups:
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                if isinstance(group_or_rqlexpr, RRQLExpression):
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                    msg = "can't use RRQLExpression on %s, use an ERQLExpression"
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                    raise BadSchemaDefinition(msg % self.type)
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0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   355
    def attribute_definitions(self):
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   356
        """return an iterator on attribute definitions
1451
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sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   357
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   358
        attribute relations are a subset of subject relations where the
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   359
        object's type is a final entity
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sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   360
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   361
        an attribute definition is a 2-uple :
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   362
        * name of the relation
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   363
        * schema of the destination entity type
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   364
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   365
        iter = super(CubicWebEntitySchema, self).attribute_definitions()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   366
        for rschema, attrschema in iter:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   367
            if rschema.type == 'has_text':
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   368
                continue
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   369
            yield rschema, attrschema
1451
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sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   370
2128
464edb198faa drop @ wildcard in relation subject/object, override main_attribute for proper behaviour
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2126
diff changeset
   371
    def main_attribute(self):
464edb198faa drop @ wildcard in relation subject/object, override main_attribute for proper behaviour
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2126
diff changeset
   372
        """convenience method that returns the *main* (i.e. the first non meta)
464edb198faa drop @ wildcard in relation subject/object, override main_attribute for proper behaviour
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2126
diff changeset
   373
        attribute defined in the entity schema
464edb198faa drop @ wildcard in relation subject/object, override main_attribute for proper behaviour
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2126
diff changeset
   374
        """
464edb198faa drop @ wildcard in relation subject/object, override main_attribute for proper behaviour
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2126
diff changeset
   375
        for rschema, _ in self.attribute_definitions():
2622
3c7edaa6c6d2 oops, should have been in a earlier commit (META_RELATION_TYPES renaming)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2616
diff changeset
   376
            if not (rschema in META_RTYPES
2128
464edb198faa drop @ wildcard in relation subject/object, override main_attribute for proper behaviour
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2126
diff changeset
   377
                    or self.is_metadata(rschema)):
464edb198faa drop @ wildcard in relation subject/object, override main_attribute for proper behaviour
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2126
diff changeset
   378
                return rschema
464edb198faa drop @ wildcard in relation subject/object, override main_attribute for proper behaviour
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2126
diff changeset
   379
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   380
    def add_subject_relation(self, rschema):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   381
        """register the relation schema as possible subject relation"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   382
        super(CubicWebEntitySchema, self).add_subject_relation(rschema)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   383
        self._update_has_text()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   384
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   385
    def del_subject_relation(self, rtype):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   386
        super(CubicWebEntitySchema, self).del_subject_relation(rtype)
2632
920bfaff60a4 B [schema update] may remove has_text unexpectedly, give another argument to fix it
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2622
diff changeset
   387
        self._update_has_text(True)
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   388
2632
920bfaff60a4 B [schema update] may remove has_text unexpectedly, give another argument to fix it
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2622
diff changeset
   389
    def _update_has_text(self, deletion=False):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   390
        may_need_has_text, has_has_text = False, False
2632
920bfaff60a4 B [schema update] may remove has_text unexpectedly, give another argument to fix it
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2622
diff changeset
   391
        need_has_text = None
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   392
        for rschema in self.subject_relations():
3689
deb13e88e037 follow yams 0.25 api changes to improve performance
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3554
diff changeset
   393
            if rschema.final:
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   394
                if rschema == 'has_text':
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   395
                    has_has_text = True
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   396
                elif self.rdef(rschema).get('fulltextindexed'):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   397
                    may_need_has_text = True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   398
            elif rschema.fulltext_container:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   399
                if rschema.fulltext_container == 'subject':
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   400
                    may_need_has_text = True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   401
                else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   402
                    need_has_text = False
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   403
        for rschema in self.object_relations():
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   404
            if rschema.fulltext_container:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   405
                if rschema.fulltext_container == 'object':
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   406
                    may_need_has_text = True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   407
                else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   408
                    need_has_text = False
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   409
        if need_has_text is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   410
            need_has_text = may_need_has_text
2632
920bfaff60a4 B [schema update] may remove has_text unexpectedly, give another argument to fix it
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2622
diff changeset
   411
        if need_has_text and not has_has_text and not deletion:
4755
13a5d3a7410e [schema] tweaks meta-relations and schema/workflow entities attributes permissions
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4754
diff changeset
   412
            rdef = ybo.RelationDefinition(self.type, 'has_text', 'String',
13a5d3a7410e [schema] tweaks meta-relations and schema/workflow entities attributes permissions
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4754
diff changeset
   413
                                          __permissions__=RO_ATTR_PERMS)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   414
            self.schema.add_relation_def(rdef)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   415
        elif not need_has_text and has_has_text:
5122
c06078d59e87 [schema] ensure we don't remove has_text relation type unfortunatly
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5030
diff changeset
   416
            # use rschema.del_relation_def and not schema.del_relation_def to
c06078d59e87 [schema] ensure we don't remove has_text relation type unfortunatly
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5030
diff changeset
   417
            # avoid deleting the relation type accidentally...
c06078d59e87 [schema] ensure we don't remove has_text relation type unfortunatly
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5030
diff changeset
   418
            self.schema['has_text'].del_relation_def(self, self.schema['String'])
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   419
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   420
    def schema_entity(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   421
        """return True if this entity type is used to build the schema"""
2126
a25859917ccc stop using meta attribute from yams schema. Use instead sets defining meta relations and another defining schema types. Refactor various schema view based on this
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1977
diff changeset
   422
        return self.type in SCHEMA_TYPES
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   423
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   424
    def rql_expression(self, expression, mainvars=None, eid=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   425
        """rql expression factory"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   426
        return ERQLExpression(expression, mainvars, eid)
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   427
2252
dd9758cb77e1 cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2222
diff changeset
   428
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   429
class CubicWebRelationSchema(RelationSchema):
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   430
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   431
    def __init__(self, schema=None, rdef=None, eid=None, **kwargs):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   432
        if rdef is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   433
            # if this relation is inlined
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   434
            self.inlined = rdef.inlined
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   435
        super(CubicWebRelationSchema, self).__init__(schema, rdef, **kwargs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   436
        if eid is None and rdef is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   437
            eid = getattr(rdef, 'eid', None)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   438
        self.eid = eid
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   439
2126
a25859917ccc stop using meta attribute from yams schema. Use instead sets defining meta relations and another defining schema types. Refactor various schema view based on this
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1977
diff changeset
   440
    @property
a25859917ccc stop using meta attribute from yams schema. Use instead sets defining meta relations and another defining schema types. Refactor various schema view based on this
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1977
diff changeset
   441
    def meta(self):
2622
3c7edaa6c6d2 oops, should have been in a earlier commit (META_RELATION_TYPES renaming)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2616
diff changeset
   442
        return self.type in META_RTYPES
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   443
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   444
    def schema_relation(self):
2126
a25859917ccc stop using meta attribute from yams schema. Use instead sets defining meta relations and another defining schema types. Refactor various schema view based on this
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1977
diff changeset
   445
        """return True if this relation type is used to build the schema"""
a25859917ccc stop using meta attribute from yams schema. Use instead sets defining meta relations and another defining schema types. Refactor various schema view based on this
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1977
diff changeset
   446
        return self.type in SCHEMA_TYPES
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   447
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   448
    def may_have_permission(self, action, req, eschema=None, role=None):
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   449
        if eschema is not None:
4019
7f68077d2c3b api update
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents: 4005
diff changeset
   450
            for tschema in self.targets(eschema, role):
7f68077d2c3b api update
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents: 4005
diff changeset
   451
                rdef = self.role_rdef(eschema, tschema, role)
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   452
                if rdef.may_have_permission(action, req):
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   453
                    return True
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   454
        else:
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   455
            for rdef in self.rdefs.itervalues():
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   456
                if rdef.may_have_permission(action, req):
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   457
                    return True
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   458
        return False
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   459
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   460
    def has_perm(self, session, action, **kwargs):
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   461
        """return true if the action is granted globaly or localy"""
4575
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   462
        if self.final:
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   463
            assert not ('fromeid' in kwargs or 'toeid' in kwargs), kwargs
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   464
            assert action in ('read', 'update')
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   465
            if 'eid' in kwargs:
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   466
                subjtype = session.describe(kwargs['eid'])[0]
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   467
            else:
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   468
                subjtype = objtype = None
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   469
        else:
4575
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   470
            assert not 'eid' in kwargs, kwargs
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   471
            assert action in ('read', 'add', 'delete')
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   472
            if 'fromeid' in kwargs:
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   473
                subjtype = session.describe(kwargs['fromeid'])[0]
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   474
            else:
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   475
                subjtype = None
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   476
            if 'toeid' in kwargs:
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   477
                objtype = session.describe(kwargs['toeid'])[0]
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   478
            else:
4a7fe84f7803 [schema] fix RelationSchema.has_perm to properly works with attribute relations
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4574
diff changeset
   479
                objtype = None
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   480
        if objtype and subjtype:
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   481
            return self.rdef(subjtype, objtype).has_perm(session, action, **kwargs)
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   482
        elif subjtype:
4004
c52619c738a5 api renaming update
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents: 4003
diff changeset
   483
            for tschema in self.targets(subjtype, 'subject'):
c52619c738a5 api renaming update
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents: 4003
diff changeset
   484
                rdef = self.rdef(subjtype, tschema)
4045
f4a52abb6f4f cw 3.6 api update
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents: 4037
diff changeset
   485
                if not rdef.has_perm(session, action, **kwargs):
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   486
                    return False
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   487
        elif objtype:
4004
c52619c738a5 api renaming update
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents: 4003
diff changeset
   488
            for tschema in self.targets(objtype, 'object'):
c52619c738a5 api renaming update
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents: 4003
diff changeset
   489
                rdef = self.rdef(tschema, objtype)
c52619c738a5 api renaming update
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents: 4003
diff changeset
   490
                if not rdef.has_perm(session, action, **kwargs):
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   491
                    return False
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   492
        else:
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   493
            for rdef in self.rdefs.itervalues():
4004
c52619c738a5 api renaming update
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents: 4003
diff changeset
   494
                if not rdef.has_perm(session, action, **kwargs):
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   495
                    return False
4233
94ffaecd8e8c ouch, has_perm was always returning False...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4181
diff changeset
   496
        return True
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   497
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   498
    @deprecated('use .rdef(subjtype, objtype).role_cardinality(role)')
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   499
    def cardinality(self, subjtype, objtype, target):
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   500
        return self.rdef(subjtype, objtype).role_cardinality(target)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   501
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   502
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   503
class CubicWebSchema(Schema):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   504
    """set of entities and relations schema defining the possible data sets
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   505
    used in an application
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   506
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   507
    :type name: str
2476
1294a6bdf3bf application -> instance where it makes sense
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2460
diff changeset
   508
    :ivar name: name of the schema, usually the instance identifier
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   509
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   510
    :type base: str
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   511
    :ivar base: path of the directory where the schema is defined
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   512
    """
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   513
    reading_from_database = False
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   514
    entity_class = CubicWebEntitySchema
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   515
    relation_class = CubicWebRelationSchema
2958
44e5446b649b no inference for the identity relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2926
diff changeset
   516
    no_specialization_inference = ('identity',)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   517
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   518
    def __init__(self, *args, **kwargs):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   519
        self._eid_index = {}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   520
        super(CubicWebSchema, self).__init__(*args, **kwargs)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   521
        ybo.register_base_types(self)
2300
c8151d004e06 meta has been drop
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2293
diff changeset
   522
        rschema = self.add_relation_type(ybo.RelationType('eid'))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   523
        rschema.final = True
2300
c8151d004e06 meta has been drop
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2293
diff changeset
   524
        rschema = self.add_relation_type(ybo.RelationType('has_text'))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   525
        rschema.final = True
2300
c8151d004e06 meta has been drop
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2293
diff changeset
   526
        rschema = self.add_relation_type(ybo.RelationType('identity'))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   527
        rschema.final = False
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   528
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   529
    def add_entity_type(self, edef):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   530
        edef.name = edef.name.encode()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   531
        edef.name = bw_normalize_etype(edef.name)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   532
        assert re.match(r'[A-Z][A-Za-z0-9]*[a-z]+[0-9]*$', edef.name), repr(edef.name)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   533
        eschema = super(CubicWebSchema, self).add_entity_type(edef)
3689
deb13e88e037 follow yams 0.25 api changes to improve performance
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3554
diff changeset
   534
        if not eschema.final:
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   535
            # automatically add the eid relation to non final entity types
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   536
            rdef = ybo.RelationDefinition(eschema.type, 'eid', 'Int',
4755
13a5d3a7410e [schema] tweaks meta-relations and schema/workflow entities attributes permissions
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4754
diff changeset
   537
                                          cardinality='11', uid=True,
13a5d3a7410e [schema] tweaks meta-relations and schema/workflow entities attributes permissions
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4754
diff changeset
   538
                                          __permissions__=RO_ATTR_PERMS)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   539
            self.add_relation_def(rdef)
4755
13a5d3a7410e [schema] tweaks meta-relations and schema/workflow entities attributes permissions
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4754
diff changeset
   540
            rdef = ybo.RelationDefinition(eschema.type, 'identity', eschema.type,
13a5d3a7410e [schema] tweaks meta-relations and schema/workflow entities attributes permissions
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4754
diff changeset
   541
                                          __permissions__=RO_REL_PERMS)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   542
            self.add_relation_def(rdef)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   543
        self._eid_index[eschema.eid] = eschema
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   544
        return eschema
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   545
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   546
    def add_relation_type(self, rdef):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   547
        rdef.name = rdef.name.lower().encode()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   548
        rschema = super(CubicWebSchema, self).add_relation_type(rdef)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   549
        self._eid_index[rschema.eid] = rschema
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   550
        return rschema
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   551
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   552
    def add_relation_def(self, rdef):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   553
        """build a part of a relation schema
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   554
        (i.e. add a relation between two specific entity's types)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   555
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   556
        :type subject: str
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   557
        :param subject: entity's type that is subject of the relation
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   558
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   559
        :type rtype: str
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   560
        :param rtype: the relation's type (i.e. the name of the relation)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   561
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   562
        :type obj: str
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   563
        :param obj: entity's type that is object of the relation
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   564
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   565
        :rtype: RelationSchema
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   566
        :param: the newly created or just completed relation schema
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   567
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   568
        rdef.name = rdef.name.lower()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   569
        rdef.subject = bw_normalize_etype(rdef.subject)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   570
        rdef.object = bw_normalize_etype(rdef.object)
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   571
        rdefs = super(CubicWebSchema, self).add_relation_def(rdef)
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   572
        if rdefs:
1034
0356bbfb2f26 fix to pass arguments to base class
sylvain.thenault@logilab.fr
parents: 1016
diff changeset
   573
            try:
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   574
                self._eid_index[rdef.eid] = rdefs
1034
0356bbfb2f26 fix to pass arguments to base class
sylvain.thenault@logilab.fr
parents: 1016
diff changeset
   575
            except AttributeError:
0356bbfb2f26 fix to pass arguments to base class
sylvain.thenault@logilab.fr
parents: 1016
diff changeset
   576
                pass # not a serialized schema
4003
b9436fe77c9e fix bad merge
Sandrine Ribeau <sandrine.ribeau@logilab.fr>
parents: 3998
diff changeset
   577
        return rdefs
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   578
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   579
    def del_relation_type(self, rtype):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   580
        rschema = self.rschema(rtype)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   581
        self._eid_index.pop(rschema.eid, None)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   582
        super(CubicWebSchema, self).del_relation_type(rtype)
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   583
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   584
    def del_relation_def(self, subjtype, rtype, objtype):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   585
        for k, v in self._eid_index.items():
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   586
            if not isinstance(v, RelationDefinitionSchema):
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   587
                continue
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   588
            if v.subject == subjtype and v.rtype == rtype and v.object == objtype:
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   589
                del self._eid_index[k]
2718
3a56b87bb5d6 [schema] break when found
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2716
diff changeset
   590
                break
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   591
        super(CubicWebSchema, self).del_relation_def(subjtype, rtype, objtype)
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   592
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   593
    def del_entity_type(self, etype):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   594
        eschema = self.eschema(etype)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   595
        self._eid_index.pop(eschema.eid, None)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   596
        # deal with has_text first, else its automatic deletion (see above)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   597
        # may trigger an error in ancestor's del_entity_type method
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   598
        if 'has_text' in eschema.subject_relations():
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   599
            self.del_relation_def(etype, 'has_text', 'String')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   600
        super(CubicWebSchema, self).del_entity_type(etype)
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   601
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   602
    def schema_by_eid(self, eid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   603
        return self._eid_index[eid]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   604
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   605
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   606
# Possible constraints ########################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   607
3978
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   608
class BaseRQLConstraint(BaseConstraint):
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   609
    """base class for rql constraints
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   610
    """
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   611
3961
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   612
    def __init__(self, restriction, mainvars=None):
3963
0d592677e55f nicer mainvars/expression handling when initializing rql constraints
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3961
diff changeset
   613
        self.restriction = normalize_expression(restriction)
3961
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   614
        if mainvars is None:
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   615
            mainvars = guess_rrqlexpr_mainvars(restriction)
3963
0d592677e55f nicer mainvars/expression handling when initializing rql constraints
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3961
diff changeset
   616
        else:
0d592677e55f nicer mainvars/expression handling when initializing rql constraints
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3961
diff changeset
   617
            normmainvars = []
0d592677e55f nicer mainvars/expression handling when initializing rql constraints
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3961
diff changeset
   618
            for mainvar in mainvars.split(','):
0d592677e55f nicer mainvars/expression handling when initializing rql constraints
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3961
diff changeset
   619
                mainvar = mainvar.strip()
0d592677e55f nicer mainvars/expression handling when initializing rql constraints
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3961
diff changeset
   620
                if not mainvar.isalpha():
0d592677e55f nicer mainvars/expression handling when initializing rql constraints
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3961
diff changeset
   621
                    raise Exception('bad mainvars %s' % mainvars)
0d592677e55f nicer mainvars/expression handling when initializing rql constraints
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3961
diff changeset
   622
                normmainvars.append(mainvar)
0d592677e55f nicer mainvars/expression handling when initializing rql constraints
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3961
diff changeset
   623
            assert mainvars, 'bad mainvars %s' % mainvars
0d592677e55f nicer mainvars/expression handling when initializing rql constraints
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3961
diff changeset
   624
            mainvars = ','.join(sorted(normmainvars))
3961
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   625
        self.mainvars = mainvars
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   626
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   627
    def serialize(self):
3961
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   628
        # start with a comma for bw compat, see below
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   629
        return ';' + self.mainvars + ';' + self.restriction
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   630
5378
0f54a0e128ac [schema] cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5372
diff changeset
   631
    @classmethod
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   632
    def deserialize(cls, value):
3961
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   633
        # XXX < 3.5.10 bw compat
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   634
        if not value.startswith(';'):
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   635
            return cls(value)
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   636
        _, mainvars, restriction = value.split(';', 2)
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   637
        return cls(restriction, mainvars)
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   638
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   639
    def check(self, entity, rtype, value):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   640
        """return true if the value satisfy the constraint, else false"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   641
        # implemented as a hook in the repository
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   642
        return 1
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   643
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   644
    def repo_check(self, session, eidfrom, rtype, eidto):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   645
        """raise ValidationError if the relation doesn't satisfy the constraint
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   646
        """
3554
26e586f3c15c [schema] make RQL* constraints usable w/ attributes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3347
diff changeset
   647
        pass # this is a vocabulary constraint, not enforce XXX why?
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   648
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   649
    def __str__(self):
3965
94f95928f5ae nicer __str__ and __repr__ methods on rql constraints
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3964
diff changeset
   650
        return '%s(Any %s WHERE %s)' % (self.__class__.__name__, self.mainvars,
94f95928f5ae nicer __str__ and __repr__ methods on rql constraints
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3964
diff changeset
   651
                                        self.restriction)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   652
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   653
    def __repr__(self):
3965
94f95928f5ae nicer __str__ and __repr__ methods on rql constraints
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3964
diff changeset
   654
        return '<%s @%#x>' % (self.__str__(), id(self))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   655
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   656
3978
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   657
class RQLVocabularyConstraint(BaseRQLConstraint):
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   658
    """the rql vocabulary constraint :
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   659
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   660
    limit the proposed values to a set of entities returned by a rql query,
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   661
    but this is not enforced at the repository level
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   662
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   663
     restriction is additional rql restriction that will be added to
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   664
     a predefined query, where the S and O variables respectivly represent
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   665
     the subject and the object of the relation
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   666
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   667
     mainvars is a string that should be used as selection variable (eg
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   668
     `'Any %s WHERE ...' % mainvars`). If not specified, an attempt will be
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   669
     done to guess it according to variable used in the expression.
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   670
    """
3978
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   671
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   672
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   673
class RepoEnforcedRQLConstraintMixIn(object):
3961
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   674
3964
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   675
    def __init__(self, restriction, mainvars=None, msg=None):
3978
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   676
        super(RepoEnforcedRQLConstraintMixIn, self).__init__(restriction, mainvars)
3964
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   677
        self.msg = msg
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   678
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   679
    def serialize(self):
3968
e8dbad65a7a2 fix format string
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3967
diff changeset
   680
        # start with a semicolon for bw compat, see below
e8dbad65a7a2 fix format string
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3967
diff changeset
   681
        return ';%s;%s\n%s' % (self.mainvars, self.restriction,
3964
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   682
                               self.msg or '')
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   683
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   684
    def deserialize(cls, value):
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   685
        # XXX < 3.5.10 bw compat
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   686
        if not value.startswith(';'):
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   687
            return cls(value)
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   688
        value, msg = value.split('\n', 1)
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   689
        _, mainvars, restriction = value.split(';', 2)
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   690
        return cls(restriction, mainvars, msg)
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   691
    deserialize = classmethod(deserialize)
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   692
3554
26e586f3c15c [schema] make RQL* constraints usable w/ attributes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3347
diff changeset
   693
    def repo_check(self, session, eidfrom, rtype, eidto=None):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   694
        """raise ValidationError if the relation doesn't satisfy the constraint
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   695
        """
3978
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   696
        if not self.match_condition(session, eidfrom, eidto):
3964
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   697
            # XXX at this point if both or neither of S and O are in mainvar we
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   698
            # dunno if the validation error `occured` on eidfrom or eidto (from
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   699
            # user interface point of view)
5030
5238d9a8dfee [form] put qualified name on validation error, should fix #784299
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4913
diff changeset
   700
            #
5238d9a8dfee [form] put qualified name on validation error, should fix #784299
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4913
diff changeset
   701
            # possible enhancement: check entity being created, it's probably
5238d9a8dfee [form] put qualified name on validation error, should fix #784299
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4913
diff changeset
   702
            # the main eid unless this is a composite relation
3964
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   703
            if eidto is None or 'S' in self.mainvars or not 'O' in self.mainvars:
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   704
                maineid = eidfrom
5030
5238d9a8dfee [form] put qualified name on validation error, should fix #784299
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4913
diff changeset
   705
                qname = role_name(rtype, 'subject')
3964
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   706
            else:
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   707
                maineid = eidto
5030
5238d9a8dfee [form] put qualified name on validation error, should fix #784299
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4913
diff changeset
   708
                qname = role_name(rtype, 'object')
3964
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   709
            if self.msg:
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   710
                msg = session._(self.msg)
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   711
            else:
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   712
                msg = '%(constraint)s %(restriction)s failed' % {
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   713
                    'constraint':  session._(self.type()),
21387ffb0731 refactor so that we can specify an extra argument to constraints which
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3963
diff changeset
   714
                    'restriction': self.restriction}
5030
5238d9a8dfee [form] put qualified name on validation error, should fix #784299
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4913
diff changeset
   715
            raise ValidationError(maineid, {qname: msg})
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   716
3978
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   717
    def exec_query(self, session, eidfrom, eidto):
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   718
        if eidto is None:
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   719
            # checking constraint for an attribute relation
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   720
            restriction = 'S eid %(s)s, ' + self.restriction
5174
78438ad513ca #759035: Automate addition of eid cachekey in RQL analysis
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5122
diff changeset
   721
            args = {'s': eidfrom}
3978
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   722
        else:
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   723
            restriction = 'S eid %(s)s, O eid %(o)s, ' + self.restriction
5174
78438ad513ca #759035: Automate addition of eid cachekey in RQL analysis
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5122
diff changeset
   724
            args = {'s': eidfrom, 'o': eidto}
3978
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   725
        rql = 'Any %s WHERE %s' % (self.mainvars,  restriction)
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   726
        if self.distinct_query:
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   727
            rql = 'DISTINCT ' + rql
5174
78438ad513ca #759035: Automate addition of eid cachekey in RQL analysis
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5122
diff changeset
   728
        return session.execute(rql, args, build_descr=False)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   729
3978
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   730
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   731
class RQLConstraint(RepoEnforcedRQLConstraintMixIn, RQLVocabularyConstraint):
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   732
    """the rql constraint is similar to the RQLVocabularyConstraint but
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   733
    are also enforced at the repository level
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   734
    """
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   735
    distinct_query = False
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   736
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   737
    def match_condition(self, session, eidfrom, eidto):
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   738
        return self.exec_query(session, eidfrom, eidto)
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   739
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   740
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   741
class RQLUniqueConstraint(RepoEnforcedRQLConstraintMixIn, BaseRQLConstraint):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   742
    """the unique rql constraint check that the result of the query isn't
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   743
    greater than one
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   744
    """
3961
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   745
    distinct_query = True
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   746
3985
d5bf894fcf02 add some notes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3980
diff changeset
   747
    # XXX turns mainvars into a required argument in __init__, since we've no
d5bf894fcf02 add some notes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3980
diff changeset
   748
    #     way to guess it correctly (eg if using S,O or U the constraint will
d5bf894fcf02 add some notes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3980
diff changeset
   749
    #     always be satisfied since we've to use a DISTINCT query)
d5bf894fcf02 add some notes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3980
diff changeset
   750
3978
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   751
    def match_condition(self, session, eidfrom, eidto):
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
   752
        return len(self.exec_query(session, eidfrom, eidto)) <= 1
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   753
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   754
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   755
class RQLExpression(object):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   756
    def __init__(self, expression, mainvars, eid):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   757
        self.eid = eid # eid of the entity representing this rql expression
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   758
        if not isinstance(mainvars, unicode):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   759
            mainvars = unicode(mainvars)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   760
        self.mainvars = mainvars
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   761
        self.expression = normalize_expression(expression)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   762
        try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   763
            self.rqlst = parse(self.full_rql, print_errors=False).children[0]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   764
        except RQLSyntaxError:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   765
            raise RQLSyntaxError(expression)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   766
        for mainvar in mainvars.split(','):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   767
            if len(self.rqlst.defined_vars[mainvar].references()) <= 2:
2142
098aa2075903 include_schema_files is useless
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1977
diff changeset
   768
                _LOGGER.warn('You did not use the %s variable in your RQL '
098aa2075903 include_schema_files is useless
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1977
diff changeset
   769
                             'expression %s', mainvar, self)
3825
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3824
diff changeset
   770
        # syntax tree used by read security (inserted in queries when necessary)
3240
8604a15995d1 refactor so that rql rewriter may be used outside the server. Enhance it to be usable for RRQLExpression as well
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2967
diff changeset
   771
        self.snippet_rqlst = parse(self.minimal_rql, print_errors=False).children[0]
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   772
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   773
    def __str__(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   774
        return self.full_rql
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   775
    def __repr__(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   776
        return '%s(%s)' % (self.__class__.__name__, self.full_rql)
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   777
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   778
    def __cmp__(self, other):
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   779
        if hasattr(other, 'expression'):
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   780
            return cmp(other.expression, self.expression)
4066
0555f170c4d1 __cmp__ should *NOT* return False when different
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4045
diff changeset
   781
        return -1
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   782
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   783
    def __deepcopy__(self, memo):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   784
        return self.__class__(self.expression, self.mainvars)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   785
    def __getstate__(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   786
        return (self.expression, self.mainvars)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   787
    def __setstate__(self, state):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   788
        self.__init__(*state)
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   789
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   790
    @cached
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   791
    def transform_has_permission(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   792
        found = None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   793
        rqlst = self.rqlst
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   794
        for var in rqlst.defined_vars.itervalues():
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   795
            for varref in var.references():
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   796
                rel = varref.relation()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   797
                if rel is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   798
                    continue
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   799
                try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   800
                    prefix, action, suffix = rel.r_type.split('_')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   801
                except ValueError:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   802
                    continue
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   803
                if prefix != 'has' or suffix != 'permission' or \
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   804
                       not action in ('add', 'delete', 'update', 'read'):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   805
                    continue
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   806
                if found is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   807
                    found = []
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   808
                    rqlst.save_state()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   809
                assert rel.children[0].name == 'U'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   810
                objvar = rel.children[1].children[0].variable
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   811
                rqlst.remove_node(rel)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   812
                selected = [v.name for v in rqlst.get_selected_variables()]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   813
                if objvar.name not in selected:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   814
                    colindex = len(selected)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   815
                    rqlst.add_selected(objvar)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   816
                else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   817
                    colindex = selected.index(objvar.name)
4717
535705688f4f proper deprecation warning when import class that should be imported from yams
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4702
diff changeset
   818
                found.append((action, colindex))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   819
                # remove U eid %(u)s if U is not used in any other relation
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   820
                uvrefs = rqlst.defined_vars['U'].references()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   821
                if len(uvrefs) == 1:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   822
                    rqlst.remove_node(uvrefs[0].relation())
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   823
        if found is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   824
            rql = rqlst.as_string()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   825
            if len(rqlst.selection) == 1 and isinstance(rqlst.where, nodes.Relation):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   826
                # only "Any X WHERE X eid %(x)s" remaining, no need to execute the rql
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   827
                keyarg = rqlst.selection[0].name.lower()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   828
            else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   829
                keyarg = None
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   830
            rqlst.recover()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   831
            return rql, found, keyarg
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   832
        return rqlst.as_string(), None, None
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   833
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   834
    def _check(self, session, **kwargs):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   835
        """return True if the rql expression is matching the given relation
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   836
        between fromeid and toeid
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   837
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   838
        session may actually be a request as well
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   839
        """
4607
55eab66c6592 [schema security] fix so that when cheking attributes perms for an entity being created, 'owners' and has_*_permission in erqlexpr are considered satisfied
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4586
diff changeset
   840
        creating = kwargs.get('creating')
55eab66c6592 [schema security] fix so that when cheking attributes perms for an entity being created, 'owners' and has_*_permission in erqlexpr are considered satisfied
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4586
diff changeset
   841
        if not creating and self.eid is not None:
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   842
            key = (self.eid, tuple(sorted(kwargs.iteritems())))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   843
            try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   844
                return session.local_perm_cache[key]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   845
            except KeyError:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   846
                pass
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   847
        rql, has_perm_defs, keyarg = self.transform_has_permission()
5703
24ca7615379b [security] consider any rql expression refering to X while X is being created as satisfied
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5531
diff changeset
   848
        # when creating an entity, expression related to X satisfied
24ca7615379b [security] consider any rql expression refering to X while X is being created as satisfied
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5531
diff changeset
   849
        if creating and 'X' in self.rqlst.defined_vars:
24ca7615379b [security] consider any rql expression refering to X while X is being created as satisfied
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5531
diff changeset
   850
            return True
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   851
        if keyarg is None:
4619
f4254586e867 [security] allow to call .check on rql expression with a user eid specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4608
diff changeset
   852
            kwargs.setdefault('u', session.user.eid)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   853
            try:
5174
78438ad513ca #759035: Automate addition of eid cachekey in RQL analysis
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5122
diff changeset
   854
                rset = session.execute(rql, kwargs, build_descr=True)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   855
            except NotImplementedError:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   856
                self.critical('cant check rql expression, unsupported rql %s', rql)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   857
                if self.eid is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   858
                    session.local_perm_cache[key] = False
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   859
                return False
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   860
            except TypeResolverException, ex:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   861
                # some expression may not be resolvable with current kwargs
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   862
                # (type conflict)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   863
                self.warning('%s: %s', rql, str(ex))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   864
                if self.eid is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   865
                    session.local_perm_cache[key] = False
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   866
                return False
5531
0ce62ac0d1d7 catch unauthorized when executing rql to check an rql expression. Fix #968824
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   867
            except Unauthorized, ex:
0ce62ac0d1d7 catch unauthorized when executing rql to check an rql expression. Fix #968824
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   868
                self.debug('unauthorized %s: %s', rql, str(ex))
0ce62ac0d1d7 catch unauthorized when executing rql to check an rql expression. Fix #968824
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   869
                if self.eid is not None:
0ce62ac0d1d7 catch unauthorized when executing rql to check an rql expression. Fix #968824
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   870
                    session.local_perm_cache[key] = False
0ce62ac0d1d7 catch unauthorized when executing rql to check an rql expression. Fix #968824
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   871
                return False
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   872
        else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   873
            rset = session.eid_rset(kwargs[keyarg])
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   874
        # if no special has_*_permission relation in the rql expression, just
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   875
        # check the result set contains something
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   876
        if has_perm_defs is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   877
            if rset:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   878
                if self.eid is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   879
                    session.local_perm_cache[key] = True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   880
                return True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   881
        elif rset:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   882
            # check every special has_*_permission relation is satisfied
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   883
            get_eschema = session.vreg.schema.eschema
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   884
            try:
4717
535705688f4f proper deprecation warning when import class that should be imported from yams
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4702
diff changeset
   885
                for eaction, col in has_perm_defs:
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   886
                    for i in xrange(len(rset)):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   887
                        eschema = get_eschema(rset.description[i][col])
3877
7ca53fc72a0a reldefsecurity branch :
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   888
                        eschema.check_perm(session, eaction, eid=rset[i][col])
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   889
                if self.eid is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   890
                    session.local_perm_cache[key] = True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   891
                return True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   892
            except Unauthorized:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   893
                pass
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   894
        if self.eid is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   895
            session.local_perm_cache[key] = False
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   896
        return False
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   897
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   898
    @property
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   899
    def minimal_rql(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   900
        return 'Any %s WHERE %s' % (self.mainvars, self.expression)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   901
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   902
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   903
class ERQLExpression(RQLExpression):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   904
    def __init__(self, expression, mainvars=None, eid=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   905
        RQLExpression.__init__(self, expression, mainvars or 'X', eid)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   906
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   907
    @property
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   908
    def full_rql(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   909
        rql = self.minimal_rql
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   910
        rqlst = getattr(self, 'rqlst', None) # may be not set yet
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   911
        if rqlst is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   912
            defined = rqlst.defined_vars
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   913
        else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   914
            defined = set(split_expression(self.expression))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   915
        if 'X' in defined:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   916
            rql += ', X eid %(x)s'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   917
        if 'U' in defined:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   918
            rql += ', U eid %(u)s'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   919
        return rql
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   920
4619
f4254586e867 [security] allow to call .check on rql expression with a user eid specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4608
diff changeset
   921
    def check(self, session, eid=None, creating=False, **kwargs):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   922
        if 'X' in self.rqlst.defined_vars:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   923
            if eid is None:
4607
55eab66c6592 [schema security] fix so that when cheking attributes perms for an entity being created, 'owners' and has_*_permission in erqlexpr are considered satisfied
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4586
diff changeset
   924
                if creating:
4619
f4254586e867 [security] allow to call .check on rql expression with a user eid specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4608
diff changeset
   925
                    return self._check(session, creating=True, **kwargs)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   926
                return False
4607
55eab66c6592 [schema security] fix so that when cheking attributes perms for an entity being created, 'owners' and has_*_permission in erqlexpr are considered satisfied
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4586
diff changeset
   927
            assert creating == False
4619
f4254586e867 [security] allow to call .check on rql expression with a user eid specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4608
diff changeset
   928
            return self._check(session, x=eid, **kwargs)
f4254586e867 [security] allow to call .check on rql expression with a user eid specified
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4608
diff changeset
   929
        return self._check(session, **kwargs)
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   930
3961
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   931
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   932
class RRQLExpression(RQLExpression):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   933
    def __init__(self, expression, mainvars=None, eid=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   934
        if mainvars is None:
3961
d1cbf77db999 fix RQLUniqueConstraint behaviour by using a DISTINCT query and allowing
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3827
diff changeset
   935
            mainvars = guess_rrqlexpr_mainvars(expression)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   936
        RQLExpression.__init__(self, expression, mainvars, eid)
3827
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3826
diff changeset
   937
        # graph of links between variable, used by rql rewriter
3826
0c0c051863cb close #511810: bad rql generated when looking for vocabulary for a relation on an entity which doesn't exist (yet)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3825
diff changeset
   938
        self.vargraph = {}
0c0c051863cb close #511810: bad rql generated when looking for vocabulary for a relation on an entity which doesn't exist (yet)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3825
diff changeset
   939
        for relation in self.rqlst.get_nodes(nodes.Relation):
0c0c051863cb close #511810: bad rql generated when looking for vocabulary for a relation on an entity which doesn't exist (yet)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3825
diff changeset
   940
            try:
0c0c051863cb close #511810: bad rql generated when looking for vocabulary for a relation on an entity which doesn't exist (yet)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3825
diff changeset
   941
                rhsvarname = relation.children[1].children[0].variable.name
0c0c051863cb close #511810: bad rql generated when looking for vocabulary for a relation on an entity which doesn't exist (yet)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3825
diff changeset
   942
                lhsvarname = relation.children[0].name
0c0c051863cb close #511810: bad rql generated when looking for vocabulary for a relation on an entity which doesn't exist (yet)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3825
diff changeset
   943
            except AttributeError:
0c0c051863cb close #511810: bad rql generated when looking for vocabulary for a relation on an entity which doesn't exist (yet)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3825
diff changeset
   944
                pass
0c0c051863cb close #511810: bad rql generated when looking for vocabulary for a relation on an entity which doesn't exist (yet)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3825
diff changeset
   945
            else:
0c0c051863cb close #511810: bad rql generated when looking for vocabulary for a relation on an entity which doesn't exist (yet)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3825
diff changeset
   946
                self.vargraph.setdefault(lhsvarname, []).append(rhsvarname)
0c0c051863cb close #511810: bad rql generated when looking for vocabulary for a relation on an entity which doesn't exist (yet)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3825
diff changeset
   947
                self.vargraph.setdefault(rhsvarname, []).append(lhsvarname)
0c0c051863cb close #511810: bad rql generated when looking for vocabulary for a relation on an entity which doesn't exist (yet)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3825
diff changeset
   948
                #self.vargraph[(lhsvarname, rhsvarname)] = relation.r_type
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   949
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   950
    @property
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   951
    def full_rql(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   952
        rql = self.minimal_rql
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   953
        rqlst = getattr(self, 'rqlst', None) # may be not set yet
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   954
        if rqlst is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   955
            defined = rqlst.defined_vars
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   956
        else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   957
            defined = set(split_expression(self.expression))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   958
        if 'S' in defined:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   959
            rql += ', S eid %(s)s'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   960
        if 'O' in defined:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   961
            rql += ', O eid %(o)s'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   962
        if 'U' in defined:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   963
            rql += ', U eid %(u)s'
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   964
        return rql
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   965
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   966
    def check(self, session, fromeid=None, toeid=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   967
        kwargs = {}
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   968
        if 'S' in self.rqlst.defined_vars:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   969
            if fromeid is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   970
                return False
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   971
            kwargs['s'] = fromeid
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   972
        if 'O' in self.rqlst.defined_vars:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   973
            if toeid is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   974
                return False
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   975
            kwargs['o'] = toeid
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   976
        return self._check(session, **kwargs)
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   977
4570
ede247bbbf62 follow yams api change: attributes permissions are now defined for
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4466
diff changeset
   978
# in yams, default 'update' perm for attributes granted to managers and owners.
ede247bbbf62 follow yams api change: attributes permissions are now defined for
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4466
diff changeset
   979
# Within cw, we want to default to users who may edit the entity holding the
ede247bbbf62 follow yams api change: attributes permissions are now defined for
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4466
diff changeset
   980
# attribute.
4586
440e340c61fe DEFAULT_ATTRPERMS is now public
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4575
diff changeset
   981
ybo.DEFAULT_ATTRPERMS['update'] = (
4570
ede247bbbf62 follow yams api change: attributes permissions are now defined for
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4466
diff changeset
   982
    'managers', ERQLExpression('U has_update_permission X'))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   983
629
59b6542f5729 provide a new WorkflowableEntityType base class (will be refactored later, maybe with schema interfaces)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 628
diff changeset
   984
# workflow extensions #########################################################
2926
4484387ed012 when adding/removing cubes, we should add/remove entity types in correct order if one inherits from another
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2782
diff changeset
   985
2460
ce1a7ffc6c90 fix a couple NameErrors
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 2459
diff changeset
   986
from yams.buildobjs import _add_relation as yams_add_relation
629
59b6542f5729 provide a new WorkflowableEntityType base class (will be refactored later, maybe with schema interfaces)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 628
diff changeset
   987
59b6542f5729 provide a new WorkflowableEntityType base class (will be refactored later, maybe with schema interfaces)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 628
diff changeset
   988
class workflowable_definition(ybo.metadefinition):
59b6542f5729 provide a new WorkflowableEntityType base class (will be refactored later, maybe with schema interfaces)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 628
diff changeset
   989
    """extends default EntityType's metaclass to add workflow relations
5378
0f54a0e128ac [schema] cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5372
diff changeset
   990
    (i.e. in_state, wf_info_for and custom_workflow). This is the default
0f54a0e128ac [schema] cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5372
diff changeset
   991
    metaclass for WorkflowableEntityType.
629
59b6542f5729 provide a new WorkflowableEntityType base class (will be refactored later, maybe with schema interfaces)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 628
diff changeset
   992
    """
59b6542f5729 provide a new WorkflowableEntityType base class (will be refactored later, maybe with schema interfaces)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 628
diff changeset
   993
    def __new__(mcs, name, bases, classdict):
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2782
diff changeset
   994
        abstract = classdict.pop('__abstract__', False)
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2782
diff changeset
   995
        cls = super(workflowable_definition, mcs).__new__(mcs, name, bases,
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2782
diff changeset
   996
                                                          classdict)
629
59b6542f5729 provide a new WorkflowableEntityType base class (will be refactored later, maybe with schema interfaces)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 628
diff changeset
   997
        if not abstract:
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2782
diff changeset
   998
            make_workflowable(cls)
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2782
diff changeset
   999
        return cls
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2782
diff changeset
  1000
5379
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1001
class WorkflowableEntityType(ybo.EntityType):
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1002
    """Use this base class instead of :class:`EntityType` to have workflow
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1003
    relations (i.e. `in_state`, `wf_info_for` and `custom_workflow`) on your
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1004
    entity type.
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1005
    """
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1006
    __metaclass__ = workflowable_definition
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1007
    __abstract__ = True
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1008
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1009
2957
2daabf4c646e [schema] make_workflowable now take an option description for the in_state relation
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2931
diff changeset
  1010
def make_workflowable(cls, in_state_descr=None):
5378
0f54a0e128ac [schema] cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5372
diff changeset
  1011
    """Adds workflow relations as :class:`WorkflowableEntityType`, but usable on
0f54a0e128ac [schema] cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5372
diff changeset
  1012
    existing classes which are not using that base class.
0f54a0e128ac [schema] cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5372
diff changeset
  1013
    """
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2782
diff changeset
  1014
    existing_rels = set(rdef.name for rdef in cls.__relations__)
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2782
diff changeset
  1015
    # let relation types defined in cw.schemas.workflow carrying
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2782
diff changeset
  1016
    # cardinality, constraints and other relation definition properties
5379
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1017
    etype = getattr(cls, 'name', cls.__name__)
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2782
diff changeset
  1018
    if 'custom_workflow' not in existing_rels:
5379
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1019
        rdef = ybo.RelationDefinition(etype, 'custom_workflow', 'Workflow')
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1020
        yams_add_relation(cls.__relations__, rdef)
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2782
diff changeset
  1021
    if 'in_state' not in existing_rels:
5379
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1022
        rdef = ybo.RelationDefinition(etype, 'in_state', 'State',
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1023
                                      description=in_state_descr)
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1024
        yams_add_relation(cls.__relations__, rdef)
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2782
diff changeset
  1025
    if 'wf_info_for' not in existing_rels:
5379
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1026
        rdef = ybo.RelationDefinition('TrInfo', 'wf_info_for', etype)
c082dea0731b [schema] update for yams 0.29: BoundConstraint renamed to BoundaryConstraint; new constraint messages; ObjectRelation deprecated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5378
diff changeset
  1027
        yams_add_relation(cls.__relations__, rdef)
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
  1028
629
59b6542f5729 provide a new WorkflowableEntityType base class (will be refactored later, maybe with schema interfaces)
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 628
diff changeset
  1029
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1030
# schema loading ##############################################################
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1031
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1032
CONSTRAINTS['RQLConstraint'] = RQLConstraint
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1033
CONSTRAINTS['RQLUniqueConstraint'] = RQLUniqueConstraint
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1034
CONSTRAINTS['RQLVocabularyConstraint'] = RQLVocabularyConstraint
3980
b17cf4a2e09e this constraint is actually unusable in yams schema for cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3979
diff changeset
  1035
CONSTRAINTS.pop('MultipleStaticVocabularyConstraint', None) # don't want this in cw yams schema
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1036
PyFileReader.context.update(CONSTRAINTS)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1037
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1038
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1039
class BootstrapSchemaLoader(SchemaLoader):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1040
    """cubicweb specific schema loader, loading only schema necessary to read
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1041
    the persistent schema
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1042
    """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1043
    schemacls = CubicWebSchema
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1044
1034
0356bbfb2f26 fix to pass arguments to base class
sylvain.thenault@logilab.fr
parents: 1016
diff changeset
  1045
    def load(self, config, path=(), **kwargs):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1046
        """return a Schema instance from the schema definition read
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1047
        from <directory>
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1048
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1049
        return super(BootstrapSchemaLoader, self).load(
1034
0356bbfb2f26 fix to pass arguments to base class
sylvain.thenault@logilab.fr
parents: 1016
diff changeset
  1050
            path, config.appid, register_base_types=False, **kwargs)
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
  1051
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1052
    def _load_definition_files(self, cubes=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1053
        # bootstraping, ignore cubes
2735
39c942241b48 no need for lib_directory
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2730
diff changeset
  1054
        filepath = join(cubicweb.CW_SOFTWARE_ROOT, 'schemas', 'bootstrap.py')
2142
098aa2075903 include_schema_files is useless
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1977
diff changeset
  1055
        self.info('loading %s', filepath)
098aa2075903 include_schema_files is useless
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1977
diff changeset
  1056
        self.handle_file(filepath)
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
  1057
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1058
    def unhandled_file(self, filepath):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1059
        """called when a file without handler associated has been found"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1060
        self.warning('ignoring file %r', filepath)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1061
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1062
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1063
class CubicWebSchemaLoader(BootstrapSchemaLoader):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1064
    """cubicweb specific schema loader, automatically adding metadata to the
2476
1294a6bdf3bf application -> instance where it makes sense
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2460
diff changeset
  1065
    instance's schema
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1066
    """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1067
1034
0356bbfb2f26 fix to pass arguments to base class
sylvain.thenault@logilab.fr
parents: 1016
diff changeset
  1068
    def load(self, config, **kwargs):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1069
        """return a Schema instance from the schema definition read
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1070
        from <directory>
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1071
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1072
        self.info('loading %s schemas', ', '.join(config.cubes()))
2782
998f24dabd0d compute extrapath, necessary for proper schema module detection when CW_CUBES_PATH is set
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2742
diff changeset
  1073
        self.extrapath = {}
998f24dabd0d compute extrapath, necessary for proper schema module detection when CW_CUBES_PATH is set
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2742
diff changeset
  1074
        for cubesdir in config.cubes_search_path():
998f24dabd0d compute extrapath, necessary for proper schema module detection when CW_CUBES_PATH is set
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2742
diff changeset
  1075
            if cubesdir != config.CUBES_DIR:
998f24dabd0d compute extrapath, necessary for proper schema module detection when CW_CUBES_PATH is set
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2742
diff changeset
  1076
                self.extrapath[cubesdir] = 'cubes'
372
a8a975a88368 check apphome is not None
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents: 0
diff changeset
  1077
        if config.apphome:
2598
a66fe74bd9fc [R schema] dont give an iterator, it's a trap
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2596
diff changeset
  1078
            path = tuple(reversed([config.apphome] + config.cubes_path()))
372
a8a975a88368 check apphome is not None
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents: 0
diff changeset
  1079
        else:
2598
a66fe74bd9fc [R schema] dont give an iterator, it's a trap
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2596
diff changeset
  1080
            path = tuple(reversed(config.cubes_path()))
2526
40e41eb34a7d we've to call cleanup_sys_modules manually for proper schema modules cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
  1081
        try:
40e41eb34a7d we've to call cleanup_sys_modules manually for proper schema modules cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
  1082
            return super(CubicWebSchemaLoader, self).load(config, path=path, **kwargs)
40e41eb34a7d we've to call cleanup_sys_modules manually for proper schema modules cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
  1083
        finally:
40e41eb34a7d we've to call cleanup_sys_modules manually for proper schema modules cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
  1084
            # we've to cleanup modules imported from cubicweb.schemas as well
2735
39c942241b48 no need for lib_directory
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2730
diff changeset
  1085
            cleanup_sys_modules([join(cubicweb.CW_SOFTWARE_ROOT, 'schemas')])
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1086
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1087
    def _load_definition_files(self, cubes):
2741
148d0cea1fb5 [schema] oops
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2736
diff changeset
  1088
        for filepath in (join(cubicweb.CW_SOFTWARE_ROOT, 'schemas', 'bootstrap.py'),
148d0cea1fb5 [schema] oops
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2736
diff changeset
  1089
                         join(cubicweb.CW_SOFTWARE_ROOT, 'schemas', 'base.py'),
148d0cea1fb5 [schema] oops
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2736
diff changeset
  1090
                         join(cubicweb.CW_SOFTWARE_ROOT, 'schemas', 'workflow.py'),
148d0cea1fb5 [schema] oops
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2736
diff changeset
  1091
                         join(cubicweb.CW_SOFTWARE_ROOT, 'schemas', 'Bookmark.py')):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1092
            self.info('loading %s', filepath)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1093
            self.handle_file(filepath)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1094
        for cube in cubes:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1095
            for filepath in self.get_schema_files(cube):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1096
                self.info('loading %s', filepath)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1097
                self.handle_file(filepath)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1098
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1099
2459
d088d0ff48a1 move RichString and co to yams, keeping only a small monkeypatch for cw-page-template here
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2456
diff changeset
  1100
set_log_methods(CubicWebSchemaLoader, getLogger('cubicweb.schemaloader'))
d088d0ff48a1 move RichString and co to yams, keeping only a small monkeypatch for cw-page-template here
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2456
diff changeset
  1101
set_log_methods(BootstrapSchemaLoader, getLogger('cubicweb.bootstrapschemaloader'))
d088d0ff48a1 move RichString and co to yams, keeping only a small monkeypatch for cw-page-template here
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2456
diff changeset
  1102
set_log_methods(RQLExpression, getLogger('cubicweb.schema'))
d088d0ff48a1 move RichString and co to yams, keeping only a small monkeypatch for cw-page-template here
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2456
diff changeset
  1103
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1104
# _() is just there to add messages to the catalog, don't care about actual
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1105
# translation
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1106
PERM_USE_TEMPLATE_FORMAT = _('use_template_format')
2459
d088d0ff48a1 move RichString and co to yams, keeping only a small monkeypatch for cw-page-template here
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2456
diff changeset
  1107
NEED_PERM_FORMATS = [_('text/cubicweb-page-template')]
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1108
2531
531ea4e7013e [cleanup] nicer imports
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2526
diff changeset
  1109
@monkeypatch(FormatConstraint)
3347
428f95118556 fix vocab param to avoid deprecation warning
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3287
diff changeset
  1110
def vocabulary(self, entity=None, form=None):
3401
f893f4f199fc use ._cw instead of req on appobject classes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3369
diff changeset
  1111
    cw = None
3347
428f95118556 fix vocab param to avoid deprecation warning
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3287
diff changeset
  1112
    if form is None and entity is not None:
3401
f893f4f199fc use ._cw instead of req on appobject classes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3369
diff changeset
  1113
        cw = entity._cw
3347
428f95118556 fix vocab param to avoid deprecation warning
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3287
diff changeset
  1114
    elif form is not None:
3401
f893f4f199fc use ._cw instead of req on appobject classes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3369
diff changeset
  1115
        cw = form._cw
4757
5d937aeaa6fb do not check for use template permission when session is super session or integrity hooks are deactivated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4755
diff changeset
  1116
    if cw is not None:
4835
13b0b96d7982 [repo] enhanced security handling: deprecates unsafe_execute, in favor of explicit read/write security control using the `enabled_security` context manager. Also code executed on the repository side is now unsafe by default.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4834
diff changeset
  1117
        if hasattr(cw, 'write_security'): # test it's a session and not a request
4757
5d937aeaa6fb do not check for use template permission when session is super session or integrity hooks are deactivated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4755
diff changeset
  1118
            # cw is a server session
4835
13b0b96d7982 [repo] enhanced security handling: deprecates unsafe_execute, in favor of explicit read/write security control using the `enabled_security` context manager. Also code executed on the repository side is now unsafe by default.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4834
diff changeset
  1119
            hasperm = not cw.write_security or \
4843
5f7363416765 fix hooks control method name + other litle cleanups
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4835
diff changeset
  1120
                      not cw.is_hook_category_activated('integrity') or \
4757
5d937aeaa6fb do not check for use template permission when session is super session or integrity hooks are deactivated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4755
diff changeset
  1121
                      cw.user.has_permission(PERM_USE_TEMPLATE_FORMAT)
5d937aeaa6fb do not check for use template permission when session is super session or integrity hooks are deactivated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4755
diff changeset
  1122
        else:
5d937aeaa6fb do not check for use template permission when session is super session or integrity hooks are deactivated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4755
diff changeset
  1123
            hasperm = cw.user.has_permission(PERM_USE_TEMPLATE_FORMAT)
5d937aeaa6fb do not check for use template permission when session is super session or integrity hooks are deactivated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4755
diff changeset
  1124
        if hasperm:
5d937aeaa6fb do not check for use template permission when session is super session or integrity hooks are deactivated
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4755
diff changeset
  1125
            return self.regular_formats + tuple(NEED_PERM_FORMATS)
2459
d088d0ff48a1 move RichString and co to yams, keeping only a small monkeypatch for cw-page-template here
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2456
diff changeset
  1126
    return self.regular_formats
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1127
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1128
# XXX monkey patch PyFileReader.import_erschema until bw_normalize_etype is
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1129
# necessary
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1130
orig_import_erschema = PyFileReader.import_erschema
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1131
def bw_import_erschema(self, ertype, schemamod=None, instantiate=True):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1132
    return orig_import_erschema(self, bw_normalize_etype(ertype), schemamod, instantiate)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1133
PyFileReader.import_erschema = bw_import_erschema
1451
982e8616d9a2 delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
  1134
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1135
# XXX itou for some Statement methods
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1136
from rql import stmts
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1137
orig_get_etype = stmts.ScopeNode.get_etype
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1138
def bw_get_etype(self, name):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1139
    return orig_get_etype(self, bw_normalize_etype(name))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1140
stmts.ScopeNode.get_etype = bw_get_etype
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1141
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1142
orig_add_main_variable_delete = stmts.Delete.add_main_variable
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1143
def bw_add_main_variable_delete(self, etype, vref):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1144
    return orig_add_main_variable_delete(self, bw_normalize_etype(etype), vref)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1145
stmts.Delete.add_main_variable = bw_add_main_variable_delete
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1146
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1147
orig_add_main_variable_insert = stmts.Insert.add_main_variable
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1148
def bw_add_main_variable_insert(self, etype, vref):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1149
    return orig_add_main_variable_insert(self, bw_normalize_etype(etype), vref)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1150
stmts.Insert.add_main_variable = bw_add_main_variable_insert
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1151
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1152
orig_set_statement_type = stmts.Select.set_statement_type
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1153
def bw_set_statement_type(self, etype):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1154
    return orig_set_statement_type(self, bw_normalize_etype(etype))
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
  1155
stmts.Select.set_statement_type = bw_set_statement_type
2736
c5048502409f restore backward compat, still imported a lot
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2735
diff changeset
  1156
c5048502409f restore backward compat, still imported a lot
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2735
diff changeset
  1157
# XXX deprecated
3978
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
  1158
2736
c5048502409f restore backward compat, still imported a lot
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2735
diff changeset
  1159
from yams.buildobjs import RichString
4717
535705688f4f proper deprecation warning when import class that should be imported from yams
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4702
diff changeset
  1160
from yams.constraints import StaticVocabularyConstraint
535705688f4f proper deprecation warning when import class that should be imported from yams
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4702
diff changeset
  1161
535705688f4f proper deprecation warning when import class that should be imported from yams
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4702
diff changeset
  1162
RichString = class_moved(RichString)
535705688f4f proper deprecation warning when import class that should be imported from yams
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4702
diff changeset
  1163
535705688f4f proper deprecation warning when import class that should be imported from yams
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4702
diff changeset
  1164
StaticVocabularyConstraint = class_moved(StaticVocabularyConstraint)
535705688f4f proper deprecation warning when import class that should be imported from yams
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4702
diff changeset
  1165
FormatConstraint = class_moved(FormatConstraint)
3978
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
  1166
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
  1167
PyFileReader.context['ERQLExpression'] = yobsolete(ERQLExpression)
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
  1168
PyFileReader.context['RRQLExpression'] = yobsolete(RRQLExpression)
2c95e3033f64 finish yesterday work on rql constraints:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3968
diff changeset
  1169
PyFileReader.context['WorkflowableEntityType'] = WorkflowableEntityType