vregistry.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Mon, 15 Feb 2010 15:13:47 +0100
branchstable
changeset 4576 f8c48a495a6b
parent 4491 a0f48c31b58a
child 4719 aaed3f813ef8
permissions -rw-r--r--
tune startup logging
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"""
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* the vregistry handles various types of objects interacting
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  together. The vregistry handles registration of dynamically loaded
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  objects and provides a convenient api to access those objects
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  according to a context
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* to interact with the vregistry, objects should inherit from the
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  AppObject abstract class
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* the selection procedure has been generalized by delegating to a
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  selector, which is responsible to score the appobject according to the
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  current state (req, rset, row, col). At the end of the selection, if
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  a appobject class has been found, an instance of this class is
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  returned. The selector is instantiated at appobject registration
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:organization: Logilab
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:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
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"""
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__docformat__ = "restructuredtext en"
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import sys
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from os import listdir, stat
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from os.path import dirname, join, realpath, split, isdir, exists
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from logging import getLogger
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from warnings import warn
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from logilab.common.deprecation import deprecated, class_moved
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from logilab.common.logging_ext import set_log_methods
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from cubicweb import CW_SOFTWARE_ROOT
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from cubicweb import (RegistryNotFound, ObjectNotFound, NoSelectableObject,
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                      RegistryOutOfDate)
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from cubicweb.appobject import AppObject
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def _toload_info(path, extrapath, _toload=None):
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    """return a dictionary of <modname>: <modpath> and an ordered list of
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    (file, module name) to load
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    """
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    from logilab.common.modutils import modpath_from_file
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    if _toload is None:
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        assert isinstance(path, list)
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        _toload = {}, []
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    for fileordir in path:
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        if isdir(fileordir) and exists(join(fileordir, '__init__.py')):
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            subfiles = [join(fileordir, fname) for fname in listdir(fileordir)]
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            _toload_info(subfiles, extrapath, _toload)
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        elif fileordir[-3:] == '.py':
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            modname = '.'.join(modpath_from_file(fileordir, extrapath))
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            _toload[0][modname] = fileordir
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            _toload[1].append((fileordir, modname))
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    return _toload
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def classid(cls):
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    """returns a unique identifier for an appobject class"""
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    return '%s.%s' % (cls.__module__, cls.__name__)
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def class_regid(cls):
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    """returns a unique identifier for an appobject class"""
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    if 'id' in cls.__dict__:
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        warn('[3.6] %s.%s: id is deprecated, use __regid__'
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             % (cls.__module__, cls.__name__), DeprecationWarning)
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        cls.__regid__ = cls.id
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    if hasattr(cls, 'id') and not isinstance(cls.id, property):
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        return cls.id
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    return cls.__regid__
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class Registry(dict):
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    def __init__(self, config):
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        super(Registry, self).__init__()
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        self.config = config
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    def __getitem__(self, name):
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        """return the registry (dictionary of class objects) associated to
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        this name
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        """
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        try:
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            return super(Registry, self).__getitem__(name)
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        except KeyError:
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            raise ObjectNotFound(name), None, sys.exc_info()[-1]
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    def initialization_completed(self):
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        for appobjects in self.itervalues():
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            for appobjectcls in appobjects:
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                appobjectcls.__registered__(self)
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    def register(self, obj, oid=None, clear=False):
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        """base method to add an object in the registry"""
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        assert not '__abstract__' in obj.__dict__
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        oid = oid or class_regid(obj)
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        assert oid
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        if clear:
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            appobjects = self[oid] =  []
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        else:
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            appobjects = self.setdefault(oid, [])
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        assert not obj in appobjects, \
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               'object %s is already registered' % obj
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        appobjects.append(obj)
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    def register_and_replace(self, obj, replaced):
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        # XXXFIXME this is a duplication of unregister()
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        # remove register_and_replace in favor of unregister + register
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        # or simplify by calling unregister then register here
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   109
        if not isinstance(replaced, basestring):
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            replaced = classid(replaced)
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        registered_objs = self.get(class_regid(obj), ())
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        for index, registered in enumerate(registered_objs):
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            if classid(registered) == replaced:
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                del registered_objs[index]
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                break
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   116
        else:
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   117
            self.warning('trying to replace an unregistered view %s by %s',
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                         replaced, obj)
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   119
        self.register(obj)
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   120
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    def unregister(self, obj):
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   122
        clsid = classid(obj)
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   123
        oid = class_regid(obj)
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   124
        for registered in self.get(oid, ()):
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   125
            # use classid() to compare classes because vreg will probably
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   126
            # have its own version of the class, loaded through execfile
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   127
            if classid(registered) == clsid:
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   128
                self[oid].remove(registered)
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   129
                break
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   130
        else:
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   131
            self.warning('can\'t remove %s, no id %s in the registry',
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   132
                         clsid, oid)
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   133
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   134
    def all_objects(self):
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   135
        """return a list containing all objects in this registry.
0
b97547f5f1fa Showtime !
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parents:
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   136
        """
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   137
        result = []
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   138
        for objs in self.values():
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   139
            result += objs
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   140
        return result
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   141
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   142
    # dynamic selection methods ################################################
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   143
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   144
    def object_by_id(self, oid, *args, **kwargs):
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   145
        """return object with the given oid. Only one object is expected to be
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   146
        found.
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   147
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   148
        raise `ObjectNotFound` if not object with id <oid> in <registry>
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   149
        raise `AssertionError` if there is more than one object there
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   150
        """
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   151
        objects = self[oid]
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   152
        assert len(objects) == 1, objects
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   153
        return objects[0](*args, **kwargs)
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   154
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   155
    def select(self, oid, *args, **kwargs):
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   156
        """return the most specific object among those with the given oid
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   157
        according to the given context.
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   158
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   159
        raise `ObjectNotFound` if not object with id <oid> in <registry>
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   160
        raise `NoSelectableObject` if not object apply
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   161
        """
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   162
        return self._select_best(self[oid], *args, **kwargs)
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diff changeset
   163
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   164
    def select_or_none(self, oid, *args, **kwargs):
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   165
        """return the most specific object among those with the given oid
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   166
        according to the given context, or None if no object applies.
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   167
        """
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diff changeset
   168
        try:
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   169
            return self.select(oid, *args, **kwargs)
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   170
        except (NoSelectableObject, ObjectNotFound):
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   171
            return None
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parents: 2844 2906
diff changeset
   172
    select_object = deprecated('[3.6] use select_or_none instead of select_object'
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diff changeset
   173
                               )(select_or_none)
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diff changeset
   174
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   175
    def possible_objects(self, *args, **kwargs):
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   176
        """return an iterator on possible objects in this registry for the given
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diff changeset
   177
        context
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   178
        """
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   179
        for appobjects in self.itervalues():
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diff changeset
   180
            try:
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   181
                yield self._select_best(appobjects, *args, **kwargs)
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   182
            except NoSelectableObject:
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   183
                continue
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diff changeset
   184
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   185
    def _select_best(self, appobjects, *args, **kwargs):
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diff changeset
   186
        """return an instance of the most specific object according
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diff changeset
   187
        to parameters
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diff changeset
   188
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   189
        raise `NoSelectableObject` if not object apply
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   190
        """
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diff changeset
   191
        if len(args) > 1:
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   192
            warn('[3.5] only the request param can not be named when calling select*',
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parents: 2181
diff changeset
   193
                 DeprecationWarning, stacklevel=3)
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   194
        score, winners = 0, []
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   195
        for appobject in appobjects:
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   196
            appobjectscore = appobject.__select__(appobject, *args, **kwargs)
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   197
            if appobjectscore > score:
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   198
                score, winners = appobjectscore, [appobject]
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   199
            elif appobjectscore > 0 and appobjectscore == score:
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   200
                winners.append(appobject)
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diff changeset
   201
        if not winners:
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   202
            raise NoSelectableObject('args: %s\nkwargs: %s %s'
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   203
                                     % (args, kwargs.keys(),
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diff changeset
   204
                                        [repr(v) for v in appobjects]))
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        if len(winners) > 1:
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            if self.config.debugmode:
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                self.error('select ambiguity, args: %s\nkwargs: %s %s',
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                           args, kwargs.keys(), [repr(v) for v in winners])
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            else:
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                raise Exception('select ambiguity, args: %s\nkwargs: %s %s'
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                                % (args, kwargs.keys(),
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                                   [repr(v) for v in winners]))
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        # return the result of calling the appobject
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        return winners[0](*args, **kwargs)
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    select_best = deprecated('[3.6] select_best is now private')(_select_best)
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class VRegistry(dict):
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    """class responsible to register, propose and select the various
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    elements used to build the web interface. Currently, we have templates,
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    views, actions and components.
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    """
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    def __init__(self, config):
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        super(VRegistry, self).__init__()
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        self.config = config
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    def reset(self, path=None, force_reload=None):
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        # don't use self.clear, we want to keep existing subdictionaries
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        for subdict in self.itervalues():
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            subdict.clear()
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        self._lastmodifs = {}
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    def __getitem__(self, name):
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        """return the registry (dictionary of class objects) associated to
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        this name
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        """
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        try:
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            return super(VRegistry, self).__getitem__(name)
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        except KeyError:
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            raise RegistryNotFound(name), None, sys.exc_info()[-1]
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    # dynamic selection methods ################################################
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    @deprecated('[3.4] use vreg[registry].object_by_id(oid, *args, **kwargs)')
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    def object_by_id(self, registry, oid, *args, **kwargs):
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        """return object in <registry>.<oid>
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        raise `ObjectNotFound` if not object with id <oid> in <registry>
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        raise `AssertionError` if there is more than one object there
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        """
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        return self[registry].object_by_id(oid)
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    @deprecated('[3.4] use vreg[registry].select(oid, *args, **kwargs)')
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    def select(self, registry, oid, *args, **kwargs):
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        """return the most specific object in <registry>.<oid> according to
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        the given context
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        raise `ObjectNotFound` if not object with id <oid> in <registry>
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        raise `NoSelectableObject` if not object apply
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        """
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        return self[registry].select(oid, *args, **kwargs)
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    @deprecated('[3.4] use vreg[registry].select_or_none(oid, *args, **kwargs)')
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    def select_object(self, registry, oid, *args, **kwargs):
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        """return the most specific object in <registry>.<oid> according to
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        the given context, or None if no object apply
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        """
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        return self[registry].select_or_none(oid, *args, **kwargs)
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    @deprecated('[3.4] use vreg[registry].possible_objects(*args, **kwargs)')
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    def possible_objects(self, registry, *args, **kwargs):
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        """return an iterator on possible objects in <registry> for the given
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        context
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        """
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        return self[registry].possible_objects(*args, **kwargs)
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    # methods for explicit (un)registration ###################################
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    # default class, when no specific class set
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    REGISTRY_FACTORY = {None: Registry}
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    def registry_class(self, regid):
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        try:
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            return self.REGISTRY_FACTORY[regid]
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        except KeyError:
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            return self.REGISTRY_FACTORY[None]
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   289
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parents: 2589
diff changeset
   290
    def setdefault(self, regid):
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
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parents: 2589
diff changeset
   291
        try:
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   292
            return self[regid]
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   293
        except KeyError:
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   294
            self[regid] = self.registry_class(regid)(self.config)
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   295
            return self[regid]
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   296
668
61b2328f9ed9 rename registration callback, clear argument to register
sylvain.thenault@logilab.fr
parents: 665
diff changeset
   297
#     def clear(self, key):
61b2328f9ed9 rename registration callback, clear argument to register
sylvain.thenault@logilab.fr
parents: 665
diff changeset
   298
#         regname, oid = key.split('.')
61b2328f9ed9 rename registration callback, clear argument to register
sylvain.thenault@logilab.fr
parents: 665
diff changeset
   299
#         self[regname].pop(oid, None)
2058
7ef12c03447c nicer vreg api, try to make rset an optional named argument in select and derivated (including selectors)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2035
diff changeset
   300
695
356da23c57f1 try a register_all method
sylvain.thenault@logilab.fr
parents: 693
diff changeset
   301
    def register_all(self, objects, modname, butclasses=()):
356da23c57f1 try a register_all method
sylvain.thenault@logilab.fr
parents: 693
diff changeset
   302
        for obj in objects:
356da23c57f1 try a register_all method
sylvain.thenault@logilab.fr
parents: 693
diff changeset
   303
            try:
356da23c57f1 try a register_all method
sylvain.thenault@logilab.fr
parents: 693
diff changeset
   304
                if obj.__module__ != modname or obj in butclasses:
356da23c57f1 try a register_all method
sylvain.thenault@logilab.fr
parents: 693
diff changeset
   305
                    continue
2829
054a8805da52 turn id into __id__
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2821
diff changeset
   306
                oid = class_regid(obj)
3054
8b3b243e308e check object has __registry__ attribute before call to register()
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2906
diff changeset
   307
                registryname = obj.__registry__
695
356da23c57f1 try a register_all method
sylvain.thenault@logilab.fr
parents: 693
diff changeset
   308
            except AttributeError:
356da23c57f1 try a register_all method
sylvain.thenault@logilab.fr
parents: 693
diff changeset
   309
                continue
2587
79bbc5045288 [vreg] consider __abstract__ in register_all
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2308
diff changeset
   310
            if oid and not '__abstract__' in obj.__dict__:
3054
8b3b243e308e check object has __registry__ attribute before call to register()
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2906
diff changeset
   311
                self.register(obj, registryname)
1433
091ac3ba5d51 remove trailing white spaces
sylvain.thenault@logilab.fr
parents: 1432
diff changeset
   312
668
61b2328f9ed9 rename registration callback, clear argument to register
sylvain.thenault@logilab.fr
parents: 665
diff changeset
   313
    def register(self, obj, registryname=None, oid=None, clear=False):
665
1305da1ce3f9 reorganize a bit, some cleanup and fixes
sylvain.thenault@logilab.fr
parents: 660
diff changeset
   314
        """base method to add an object in the registry"""
707
21a59b468f1a __selectors__ -> __select__
sylvain.thenault@logilab.fr
parents: 698
diff changeset
   315
        assert not '__abstract__' in obj.__dict__
665
1305da1ce3f9 reorganize a bit, some cleanup and fixes
sylvain.thenault@logilab.fr
parents: 660
diff changeset
   316
        registryname = registryname or obj.__registry__
2650
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   317
        registry = self.setdefault(registryname)
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   318
        registry.register(obj, oid=oid, clear=clear)
665
1305da1ce3f9 reorganize a bit, some cleanup and fixes
sylvain.thenault@logilab.fr
parents: 660
diff changeset
   319
        try:
2650
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   320
            vname = obj.__name__
665
1305da1ce3f9 reorganize a bit, some cleanup and fixes
sylvain.thenault@logilab.fr
parents: 660
diff changeset
   321
        except AttributeError:
2650
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   322
            vname = obj.__class__.__name__
2657
de974465d381 [appobject] kill VObject class, move base selector classes to appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2656
diff changeset
   323
        self.debug('registered appobject %s in registry %s with id %s',
2844
4657d6e16e0c use class_regid / classid functions
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2838
diff changeset
   324
                   vname, registryname, oid or class_regid(obj))
4657d6e16e0c use class_regid / classid functions
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2838
diff changeset
   325
        self._loadedmods[obj.__module__][classid(obj)] = obj
665
1305da1ce3f9 reorganize a bit, some cleanup and fixes
sylvain.thenault@logilab.fr
parents: 660
diff changeset
   326
1305da1ce3f9 reorganize a bit, some cleanup and fixes
sylvain.thenault@logilab.fr
parents: 660
diff changeset
   327
    def unregister(self, obj, registryname=None):
2650
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   328
        self[registryname or obj.__registry__].unregister(obj)
1433
091ac3ba5d51 remove trailing white spaces
sylvain.thenault@logilab.fr
parents: 1432
diff changeset
   329
665
1305da1ce3f9 reorganize a bit, some cleanup and fixes
sylvain.thenault@logilab.fr
parents: 660
diff changeset
   330
    def register_and_replace(self, obj, replaced, registryname=None):
2650
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   331
        self[registryname or obj.__registry__].register_and_replace(obj, replaced)
665
1305da1ce3f9 reorganize a bit, some cleanup and fixes
sylvain.thenault@logilab.fr
parents: 660
diff changeset
   332
2650
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   333
    # initialization methods ###################################################
1433
091ac3ba5d51 remove trailing white spaces
sylvain.thenault@logilab.fr
parents: 1432
diff changeset
   334
2035
946ed7349e1a bugfix: extrapath is optional arg for init_registration
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2025
diff changeset
   335
    def init_registration(self, path, extrapath=None):
1316
6d71d38822ee introduce init_registration method and call it in repo initialization
sylvain.thenault@logilab.fr
parents: 1310
diff changeset
   336
        # compute list of all modules that have to be loaded
2025
010a4b0fe855 fix lookup of files to load when using CW_CUBES_PATH
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1977
diff changeset
   337
        self._toloadmods, filemods = _toload_info(path, extrapath)
2651
3ad936634d2a [registry] when a source file is changed, reset and reload the whole registry
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2589
diff changeset
   338
        # XXX is _loadedmods still necessary ? It seems like it's useful
3ad936634d2a [registry] when a source file is changed, reset and reload the whole registry
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2589
diff changeset
   339
        #     to avoid loading same module twice, especially with the
3ad936634d2a [registry] when a source file is changed, reset and reload the whole registry
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2589
diff changeset
   340
        #     _load_ancestors_then_object logic but this needs to be checked
1316
6d71d38822ee introduce init_registration method and call it in repo initialization
sylvain.thenault@logilab.fr
parents: 1310
diff changeset
   341
        self._loadedmods = {}
6d71d38822ee introduce init_registration method and call it in repo initialization
sylvain.thenault@logilab.fr
parents: 1310
diff changeset
   342
        return filemods
1433
091ac3ba5d51 remove trailing white spaces
sylvain.thenault@logilab.fr
parents: 1432
diff changeset
   343
2760
30063071aee0 fix reloading, new .reset prototype
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2689
diff changeset
   344
    def register_objects(self, path, force_reload, extrapath=None):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   345
        # need to clean sys.path this to avoid import confusion pb (i.e.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   346
        # having the same module loaded as 'cubicweb.web.views' subpackage and
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   347
        # as views'  or 'web.views' subpackage
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   348
        # this is mainly for testing purpose, we should'nt need this in
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   349
        # production environment
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   350
        for webdir in (join(dirname(realpath(__file__)), 'web'),
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   351
                       join(dirname(__file__), 'web')):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   352
            if webdir in sys.path:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   353
                sys.path.remove(webdir)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   354
        if CW_SOFTWARE_ROOT in sys.path:
1310
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   355
            sys.path.remove(CW_SOFTWARE_ROOT)
2476
1294a6bdf3bf application -> instance where it makes sense
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2381
diff changeset
   356
        # load views from each directory in the instance's path
2025
010a4b0fe855 fix lookup of files to load when using CW_CUBES_PATH
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1977
diff changeset
   357
        filemods = self.init_registration(path, extrapath)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   358
        change = False
1310
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   359
        for filepath, modname in filemods:
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   360
            if self.load_file(filepath, modname, force_reload):
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   361
                change = True
4490
d45cde54d464 backport stable branch and some vreg cleanups:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4436
diff changeset
   362
        if change:
d45cde54d464 backport stable branch and some vreg cleanups:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4436
diff changeset
   363
            self.initialization_completed()
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   364
        return change
1433
091ac3ba5d51 remove trailing white spaces
sylvain.thenault@logilab.fr
parents: 1432
diff changeset
   365
4490
d45cde54d464 backport stable branch and some vreg cleanups:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4436
diff changeset
   366
    def initialization_completed(self):
d45cde54d464 backport stable branch and some vreg cleanups:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4436
diff changeset
   367
        for regname, reg in self.iteritems():
d45cde54d464 backport stable branch and some vreg cleanups:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4436
diff changeset
   368
            reg.initialization_completed()
d45cde54d464 backport stable branch and some vreg cleanups:
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4436
diff changeset
   369
1310
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   370
    def load_file(self, filepath, modname, force_reload=False):
2651
3ad936634d2a [registry] when a source file is changed, reset and reload the whole registry
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2589
diff changeset
   371
        """load app objects from a python file"""
1310
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   372
        from logilab.common.modutils import load_module_from_name
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   373
        if modname in self._loadedmods:
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   374
            return
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   375
        self._loadedmods[modname] = {}
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   376
        try:
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   377
            modified_on = stat(filepath)[-2]
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   378
        except OSError:
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   379
            # this typically happens on emacs backup files (.#foo.py)
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   380
            self.warning('Unable to load %s. It is likely to be a backup file',
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   381
                         filepath)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   382
            return False
1310
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   383
        if filepath in self._lastmodifs:
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   384
            # only load file if it was modified
1310
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   385
            if modified_on <= self._lastmodifs[filepath]:
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   386
                return
2651
3ad936634d2a [registry] when a source file is changed, reset and reload the whole registry
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2589
diff changeset
   387
            # if it was modified, raise RegistryOutOfDate to reload everything
3ad936634d2a [registry] when a source file is changed, reset and reload the whole registry
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2589
diff changeset
   388
            self.info('File %s changed since last visit', filepath)
3ad936634d2a [registry] when a source file is changed, reset and reload the whole registry
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 2589
diff changeset
   389
            raise RegistryOutOfDate()
3565
4db55832e8a9 [vreg] fix reloading pb w/ module level error
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3071
diff changeset
   390
        # set update time before module loading, else we get some reloading
4db55832e8a9 [vreg] fix reloading pb w/ module level error
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3071
diff changeset
   391
        # weirdness in case of syntax error or other error while importing the
4db55832e8a9 [vreg] fix reloading pb w/ module level error
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3071
diff changeset
   392
        # module
4db55832e8a9 [vreg] fix reloading pb w/ module level error
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3071
diff changeset
   393
        self._lastmodifs[filepath] = modified_on
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   394
        # load the module
1310
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   395
        module = load_module_from_name(modname, use_sys=not force_reload)
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   396
        self.load_module(module)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   397
        return True
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   398
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   399
    def load_module(self, module):
1310
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   400
        self.info('loading %s', module)
668
61b2328f9ed9 rename registration callback, clear argument to register
sylvain.thenault@logilab.fr
parents: 665
diff changeset
   401
        if hasattr(module, 'registration_callback'):
61b2328f9ed9 rename registration callback, clear argument to register
sylvain.thenault@logilab.fr
parents: 665
diff changeset
   402
            module.registration_callback(self)
660
5233a9457f6b work in progress, draft for manual registration
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 652
diff changeset
   403
        else:
5233a9457f6b work in progress, draft for manual registration
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 652
diff changeset
   404
            for objname, obj in vars(module).items():
5233a9457f6b work in progress, draft for manual registration
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 652
diff changeset
   405
                if objname.startswith('_'):
5233a9457f6b work in progress, draft for manual registration
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 652
diff changeset
   406
                    continue
1310
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   407
                self._load_ancestors_then_object(module.__name__, obj)
1433
091ac3ba5d51 remove trailing white spaces
sylvain.thenault@logilab.fr
parents: 1432
diff changeset
   408
4491
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   409
    def _load_ancestors_then_object(self, modname, appobjectcls):
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   410
        """handle automatic appobject class registration:
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   411
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   412
        - first ensure parent classes are already registered
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   413
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   414
        - class with __abstract__ == True in their local dictionnary or
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   415
          with a name starting starting by an underscore are not registered
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   416
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   417
        - appobject class needs to have __registry__ and __regid__ attributes
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   418
          set to a non empty string to be registered.
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   419
        """
1310
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   420
        # imported classes
4491
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   421
        objmodname = getattr(appobjectcls, '__module__', None)
1310
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   422
        if objmodname != modname:
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   423
            if objmodname in self._toloadmods:
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   424
                self.load_file(self._toloadmods[objmodname], objmodname)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   425
            return
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   426
        # skip non registerable object
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   427
        try:
4491
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   428
            if not issubclass(appobjectcls, AppObject):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   429
                return
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   430
        except TypeError:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   431
            return
4491
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   432
        clsid = classid(appobjectcls)
2844
4657d6e16e0c use class_regid / classid functions
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2838
diff changeset
   433
        if clsid in self._loadedmods[modname]:
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   434
            return
4491
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   435
        self._loadedmods[modname][clsid] = appobjectcls
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   436
        for parent in appobjectcls.__bases__:
1310
99dfced5673e fix vobjects registration to deal with objects inter-dependancy
sylvain.thenault@logilab.fr
parents: 1282
diff changeset
   437
            self._load_ancestors_then_object(modname, parent)
4491
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   438
        if (appobjectcls.__dict__.get('__abstract__')
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   439
            or appobjectcls.__name__[0] == '_'
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   440
            or not appobjectcls.__registry__
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   441
            or not class_regid(appobjectcls)):
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   442
            return
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   443
        try:
4491
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   444
            self.register(appobjectcls)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   445
        except Exception, ex:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   446
            if self.config.mode in ('test', 'dev'):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   447
                raise
4491
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   448
            self.exception('appobject %s registration failed: %s',
a0f48c31b58a kill register_appobject_class method, simplifying autoregistration. Update test accordingly (test which manually registers object should also properly call there __register__ method). Drop the disable-appobjects config file entry: no one used it since its introduction years ago.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4490
diff changeset
   449
                           appobjectcls, ex)
1433
091ac3ba5d51 remove trailing white spaces
sylvain.thenault@logilab.fr
parents: 1432
diff changeset
   450
091ac3ba5d51 remove trailing white spaces
sylvain.thenault@logilab.fr
parents: 1432
diff changeset
   451
091ac3ba5d51 remove trailing white spaces
sylvain.thenault@logilab.fr
parents: 1432
diff changeset
   452
# init logging
2650
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   453
set_log_methods(VRegistry, getLogger('cubicweb.vreg'))
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2589
diff changeset
   454
set_log_methods(Registry, getLogger('cubicweb.registry'))
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   455
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   456
835
7dcb11dd443e fix relation_possible, ensure we return int
sylvain.thenault@logilab.fr
parents: 827
diff changeset
   457
# XXX bw compat functions #####################################################
693
cf0817dfc787 reimplements chainall/chainfirst using [And/Or], implemenent search_selector function on Selector base class
sylvain.thenault@logilab.fr
parents: 686
diff changeset
   458
2657
de974465d381 [appobject] kill VObject class, move base selector classes to appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2656
diff changeset
   459
from cubicweb.appobject import objectify_selector, AndSelector, OrSelector, Selector
de974465d381 [appobject] kill VObject class, move base selector classes to appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2656
diff changeset
   460
2788
8d3dbe577d3a R put version info in deprecation warnings
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2771
diff changeset
   461
objectify_selector = deprecated('[3.4] objectify_selector has been moved to appobject module')(objectify_selector)
2657
de974465d381 [appobject] kill VObject class, move base selector classes to appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2656
diff changeset
   462
de974465d381 [appobject] kill VObject class, move base selector classes to appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2656
diff changeset
   463
Selector = class_moved(Selector)
de974465d381 [appobject] kill VObject class, move base selector classes to appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2656
diff changeset
   464
2788
8d3dbe577d3a R put version info in deprecation warnings
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2771
diff changeset
   465
@deprecated('[3.4] use & operator (binary and)')
693
cf0817dfc787 reimplements chainall/chainfirst using [And/Or], implemenent search_selector function on Selector base class
sylvain.thenault@logilab.fr
parents: 686
diff changeset
   466
def chainall(*selectors, **kwargs):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   467
    """return a selector chaining given selectors. If one of
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   468
    the selectors fail, selection will fail, else the returned score
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   469
    will be the sum of each selector'score
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   470
    """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   471
    assert selectors
759
e044f28372bd chainall / chainfirst ensures selectors are instantiated
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 741
diff changeset
   472
    # XXX do we need to create the AndSelector here, a tuple might be enough
780
5b6c93816871 fix selector search and refactor auto-instantiation
sylvain.thenault@logilab.fr
parents: 760
diff changeset
   473
    selector = AndSelector(*selectors)
693
cf0817dfc787 reimplements chainall/chainfirst using [And/Or], implemenent search_selector function on Selector base class
sylvain.thenault@logilab.fr
parents: 686
diff changeset
   474
    if 'name' in kwargs:
cf0817dfc787 reimplements chainall/chainfirst using [And/Or], implemenent search_selector function on Selector base class
sylvain.thenault@logilab.fr
parents: 686
diff changeset
   475
        selector.__name__ = kwargs['name']
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   476
    return selector
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   477
2788
8d3dbe577d3a R put version info in deprecation warnings
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents: 2771
diff changeset
   478
@deprecated('[3.4] use | operator (binary or)')
693
cf0817dfc787 reimplements chainall/chainfirst using [And/Or], implemenent search_selector function on Selector base class
sylvain.thenault@logilab.fr
parents: 686
diff changeset
   479
def chainfirst(*selectors, **kwargs):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   480
    """return a selector chaining given selectors. If all
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   481
    the selectors fail, selection will fail, else the returned score
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   482
    will be the first non-zero selector score
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   483
    """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   484
    assert selectors
780
5b6c93816871 fix selector search and refactor auto-instantiation
sylvain.thenault@logilab.fr
parents: 760
diff changeset
   485
    selector = OrSelector(*selectors)
693
cf0817dfc787 reimplements chainall/chainfirst using [And/Or], implemenent search_selector function on Selector base class
sylvain.thenault@logilab.fr
parents: 686
diff changeset
   486
    if 'name' in kwargs:
cf0817dfc787 reimplements chainall/chainfirst using [And/Or], implemenent search_selector function on Selector base class
sylvain.thenault@logilab.fr
parents: 686
diff changeset
   487
        selector.__name__ = kwargs['name']
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   488
    return selector