author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Wed, 24 Mar 2010 15:22:01 +0100 | |
branch | stable |
changeset 4999 | 221f76e14eea |
parent 4835 | 13b0b96d7982 |
child 5066 | bf5cbc351e99 |
permissions | -rw-r--r-- |
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"""Core hooks: set generic metadata |
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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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from datetime import datetime |
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from cubicweb.selectors import implements |
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from cubicweb.server import hook |
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def eschema_eid(session, eschema): |
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"""get eid of the CWEType entity for the given yams type""" |
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# eschema.eid is None if schema has been readen from the filesystem, not |
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# from the database (eg during tests) |
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if eschema.eid is None: |
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eschema.eid = session.execute( |
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'Any X WHERE X is CWEType, X name %(name)s', |
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{'name': str(eschema)})[0][0] |
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return eschema.eid |
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class MetaDataHook(hook.Hook): |
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__abstract__ = True |
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category = 'metadata' |
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class InitMetaAttrsHook(MetaDataHook): |
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"""before create a new entity -> set creation and modification date |
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this is a conveniency hook, you shouldn't have to disable it |
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""" |
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__regid__ = 'metaattrsinit' |
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events = ('before_add_entity',) |
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def __call__(self): |
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timestamp = datetime.now() |
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self.entity.setdefault('creation_date', timestamp) |
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self.entity.setdefault('modification_date', timestamp) |
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if not self._cw.get_shared_data('do-not-insert-cwuri'): |
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cwuri = u'%seid/%s' % (self._cw.base_url(), self.entity.eid) |
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self.entity.setdefault('cwuri', cwuri) |
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class UpdateMetaAttrsHook(MetaDataHook): |
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"""update an entity -> set modification date""" |
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__regid__ = 'metaattrsupdate' |
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events = ('before_update_entity',) |
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def __call__(self): |
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# repairing is true during c-c upgrade/shell and similar commands. We |
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# usually don't want to update modification date in such cases. |
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# |
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# XXX to be really clean, we should turn off modification_date update |
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# explicitly on each command where we do not want that behaviour. |
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if not self._cw.vreg.config.repairing: |
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self.entity.setdefault('modification_date', datetime.now()) |
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class _SetCreatorOp(hook.Operation): |
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def precommit_event(self): |
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session = self.session |
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if session.deleted_in_transaction(self.entity.eid): |
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# entity have been created and deleted in the same transaction |
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return |
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if not self.entity.created_by: |
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session.add_relation(self.entity.eid, 'created_by', session.user.eid) |
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class SetIsHook(MetaDataHook): |
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"""create a new entity -> set is and is_instance_of relations |
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those relations are inserted using sql so they are not hookable. |
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""" |
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__regid__ = 'setis' |
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events = ('after_add_entity',) |
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def __call__(self): |
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if hasattr(self.entity, '_cw_recreating'): |
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return |
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session = self._cw |
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entity = self.entity |
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try: |
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session.system_sql('INSERT INTO is_relation(eid_from,eid_to) VALUES (%s,%s)' |
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% (entity.eid, eschema_eid(session, entity.e_schema))) |
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except IndexError: |
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# during schema serialization, skip |
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return |
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for eschema in entity.e_schema.ancestors() + [entity.e_schema]: |
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session.system_sql('INSERT INTO is_instance_of_relation(eid_from,eid_to) VALUES (%s,%s)' |
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% (entity.eid, eschema_eid(session, eschema))) |
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class SetOwnershipHook(MetaDataHook): |
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"""create a new entity -> set owner and creator metadata""" |
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__regid__ = 'setowner' |
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events = ('after_add_entity',) |
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104 |
|
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def __call__(self): |
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if not self._cw.is_internal_session: |
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self._cw.add_relation(self.entity.eid, 'owned_by', self._cw.user.eid) |
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_SetCreatorOp(self._cw, entity=self.entity) |
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109 |
|
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110 |
|
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class _SyncOwnersOp(hook.Operation): |
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def precommit_event(self): |
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self.session.execute('SET X owned_by U WHERE C owned_by U, C eid %(c)s,' |
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'NOT EXISTS(X owned_by U, X eid %(x)s)', |
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115 |
{'c': self.compositeeid, 'x': self.composedeid}, |
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('c', 'x')) |
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117 |
|
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118 |
|
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class SyncCompositeOwner(MetaDataHook): |
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"""when adding composite relation, the composed should have the same owners |
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has the composite |
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""" |
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__regid__ = 'synccompositeowner' |
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events = ('after_add_relation',) |
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125 |
|
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126 |
def __call__(self): |
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127 |
if self.rtype == 'wf_info_for': |
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# skip this special composite relation # XXX (syt) why? |
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129 |
return |
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eidfrom, eidto = self.eidfrom, self.eidto |
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composite = self._cw.schema_rproperty(self.rtype, eidfrom, eidto, 'composite') |
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132 |
if composite == 'subject': |
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_SyncOwnersOp(self._cw, compositeeid=eidfrom, composedeid=eidto) |
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elif composite == 'object': |
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_SyncOwnersOp(self._cw, compositeeid=eidto, composedeid=eidfrom) |
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136 |
|
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137 |
|
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138 |
class FixUserOwnershipHook(MetaDataHook): |
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139 |
"""when a user has been created, add owned_by relation on itself""" |
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__regid__ = 'fixuserowner' |
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__select__ = MetaDataHook.__select__ & implements('CWUser') |
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142 |
events = ('after_add_entity',) |
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143 |
|
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144 |
def __call__(self): |
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self._cw.add_relation(self.entity.eid, 'owned_by', self.entity.eid) |
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146 |
|
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147 |
|
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148 |
class UpdateFTIHook(MetaDataHook): |
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149 |
"""sync fulltext index text index container when a relation with |
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150 |
fulltext_container set is added / removed |
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151 |
""" |
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__regid__ = 'updateftirel' |
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events = ('after_add_relation', 'after_delete_relation') |
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154 |
|
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155 |
def __call__(self): |
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156 |
rtype = self.rtype |
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157 |
session = self._cw |
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158 |
ftcontainer = session.vreg.schema.rschema(rtype).fulltext_container |
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159 |
if self.event == 'after_add_relation': |
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160 |
if ftcontainer == 'subject': |
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161 |
session.repo.system_source.index_entity( |
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162 |
session, session.entity_from_eid(self.eidfrom)) |
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163 |
elif ftcontainer == 'object': |
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164 |
session.repo.system_source.index_entity( |
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165 |
session, session.entity_from_eid(self.eidto)) |
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166 |
# after delete relation |
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167 |
elif ftcontainer == 'subject': |
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168 |
session.repo.system_source.index_entity( |
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169 |
session, entity=session.entity_from_eid(self.eidfrom)) |
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170 |
elif ftcontainer == 'object': |
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171 |
session.repo.system_source.index_entity( |
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172 |
session, entity=session.entity_from_eid(self.eidto)) |
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173 |