author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Tue, 16 Feb 2010 09:25:18 +0100 | |
changeset 4593 | d0b5ef72a492 |
parent 4578 | 060c91ced72f |
child 4806 | 4f12f59b1a13 |
permissions | -rw-r--r-- |
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"""Core hooks: set generic metadata |
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|
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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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from cubicweb.server.repository import FTIndexEntityOp |
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def eschema_type_eid(session, etype): |
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"""get eid of the CWEType entity for the given yams type""" |
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eschema = session.repo.schema.eschema(etype) |
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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.unsafe_execute( |
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'Any X WHERE X is CWEType, X name %(name)s', |
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{'name': str(etype)})[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 relation""" |
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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.add_relation(entity.eid, 'is', |
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# eschema_type_eid(session, entity.__regid__)) |
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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_type_eid(session, entity.__regid__))) |
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except IndexError: |
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# during schema serialization, skip |
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return |
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for etype in entity.e_schema.ancestors() + [entity.e_schema]: |
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#session.add_relation(entity.eid, 'is_instance_of', |
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# eschema_type_eid(session, etype)) |
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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_type_eid(session, etype))) |
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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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107 |
|
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108 |
def __call__(self): |
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asession = self._cw.actual_session() |
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if not asession.is_internal_session: |
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111 |
self._cw.add_relation(self.entity.eid, 'owned_by', asession.user.eid) |
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_SetCreatorOp(asession, entity=self.entity) |
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113 |
|
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114 |
|
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115 |
class _SyncOwnersOp(hook.Operation): |
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116 |
def precommit_event(self): |
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self.session.unsafe_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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119 |
{'c': self.compositeeid, 'x': self.composedeid}, |
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120 |
('c', 'x')) |
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121 |
|
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122 |
|
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123 |
class SyncCompositeOwner(MetaDataHook): |
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124 |
"""when adding composite relation, the composed should have the same owners |
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125 |
has the composite |
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126 |
""" |
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127 |
__regid__ = 'synccompositeowner' |
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128 |
events = ('after_add_relation',) |
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129 |
|
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130 |
def __call__(self): |
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131 |
if self.rtype == 'wf_info_for': |
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132 |
# skip this special composite relation # XXX (syt) why? |
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133 |
return |
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134 |
eidfrom, eidto = self.eidfrom, self.eidto |
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135 |
composite = self._cw.schema_rproperty(self.rtype, eidfrom, eidto, 'composite') |
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136 |
if composite == 'subject': |
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137 |
_SyncOwnersOp(self._cw, compositeeid=eidfrom, composedeid=eidto) |
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138 |
elif composite == 'object': |
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139 |
_SyncOwnersOp(self._cw, compositeeid=eidto, composedeid=eidfrom) |
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140 |
|
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141 |
|
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142 |
class FixUserOwnershipHook(MetaDataHook): |
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143 |
"""when a user has been created, add owned_by relation on itself""" |
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144 |
__regid__ = 'fixuserowner' |
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145 |
__select__ = MetaDataHook.__select__ & implements('CWUser') |
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146 |
events = ('after_add_entity',) |
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147 |
|
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148 |
def __call__(self): |
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149 |
self._cw.add_relation(self.entity.eid, 'owned_by', self.entity.eid) |
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150 |
|
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151 |
|
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152 |
class UpdateFTIHook(MetaDataHook): |
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153 |
"""sync fulltext index when relevant relation is added / removed |
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154 |
""" |
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__regid__ = 'updateftirel' |
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156 |
events = ('after_add_relation', 'after_delete_relation') |
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157 |
|
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158 |
def __call__(self): |
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159 |
rtype = self.rtype |
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160 |
session = self._cw |
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161 |
if self.event == 'after_add_relation': |
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162 |
# Reindexing the contained entity is enough since it will implicitly |
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163 |
# reindex the container entity. |
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164 |
ftcontainer = session.vreg.schema.rschema(rtype).fulltext_container |
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165 |
if ftcontainer == 'subject': |
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166 |
FTIndexEntityOp(session, entity=session.entity_from_eid(self.eidto)) |
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167 |
elif ftcontainer == 'object': |
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168 |
FTIndexEntityOp(session, entity=session.entity_from_eid(self.eidfrom)) |
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169 |
elif session.repo.schema.rschema(rtype).fulltext_container: |
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170 |
FTIndexEntityOp(session, entity=session.entity_from_eid(self.eidto)) |
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171 |
FTIndexEntityOp(session, entity=session.entity_from_eid(self.eidfrom)) |
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172 |