author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Wed, 04 Aug 2010 11:16:38 +0200 | |
changeset 6067 | efca814587e2 |
parent 5877 | 0c7b7b76a84f |
child 6142 | 8bc6eac1fac1 |
permissions | -rw-r--r-- |
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# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved. |
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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# |
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# This file is part of CubicWeb. |
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# |
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# CubicWeb is free software: you can redistribute it and/or modify it under the |
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# terms of the GNU Lesser General Public License as published by the Free |
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# Software Foundation, either version 2.1 of the License, or (at your option) |
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# any later version. |
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# |
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more |
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# details. |
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# |
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# You should have received a copy of the GNU Lesser General Public License along |
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# with CubicWeb. If not, see <http://www.gnu.org/licenses/>. |
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"""Core hooks: set generic metadata""" |
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__docformat__ = "restructuredtext en" |
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from datetime import datetime |
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[selectors] provide a new, optimized, is_instance selector that should at some point replace implements (along with the adaptable selector)
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from cubicweb.selectors import is_instance |
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from cubicweb.server import hook |
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from cubicweb.server.utils import 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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for eid in session.transaction_data.pop('set_creator_op'): |
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if session.deleted_in_transaction(eid): |
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# entity have been created and deleted in the same transaction |
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continue |
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entity = session.entity_from_eid(eid) |
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if not entity.created_by: |
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session.add_relation(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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|
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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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98 |
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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101 |
|
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102 |
|
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103 |
class SetOwnershipHook(MetaDataHook): |
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104 |
"""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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109 |
if not self._cw.is_internal_session: |
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110 |
self._cw.add_relation(self.entity.eid, 'owned_by', self._cw.user.eid) |
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111 |
hook.set_operation(self._cw, 'set_creator_op', self.entity.eid, _SetCreatorOp) |
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112 |
|
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113 |
class _SyncOwnersOp(hook.Operation): |
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114 |
def precommit_event(self): |
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115 |
for compositeeid, composedeid in self.session.transaction_data.pop('sync_owners_op'): |
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116 |
self.session.execute('SET X owned_by U WHERE C owned_by U, C eid %(c)s,' |
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117 |
'NOT EXISTS(X owned_by U, X eid %(x)s)', |
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118 |
{'c': compositeeid, 'x': composedeid}) |
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119 |
|
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120 |
|
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121 |
class SyncCompositeOwner(MetaDataHook): |
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122 |
"""when adding composite relation, the composed should have the same owners |
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has the composite |
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124 |
""" |
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125 |
__regid__ = 'synccompositeowner' |
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126 |
events = ('after_add_relation',) |
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127 |
|
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128 |
def __call__(self): |
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129 |
if self.rtype == 'wf_info_for': |
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130 |
# skip this special composite relation # XXX (syt) why? |
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131 |
return |
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132 |
eidfrom, eidto = self.eidfrom, self.eidto |
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133 |
composite = self._cw.schema_rproperty(self.rtype, eidfrom, eidto, 'composite') |
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134 |
if composite == 'subject': |
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135 |
hook.set_operation(self._cw, 'sync_owners_op', (eidfrom, eidto), _SyncOwnersOp) |
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136 |
elif composite == 'object': |
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137 |
hook.set_operation(self._cw, 'sync_owners_op', (eidto, eidfrom), _SyncOwnersOp) |
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138 |
|
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139 |
|
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140 |
class FixUserOwnershipHook(MetaDataHook): |
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141 |
"""when a user has been created, add owned_by relation on itself""" |
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142 |
__regid__ = 'fixuserowner' |
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143 |
__select__ = MetaDataHook.__select__ & is_instance('CWUser') |
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144 |
events = ('after_add_entity',) |
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145 |
|
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146 |
def __call__(self): |
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147 |
self._cw.add_relation(self.entity.eid, 'owned_by', self.entity.eid) |
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148 |
|
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149 |
|
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150 |
class UpdateFTIHook(MetaDataHook): |
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151 |
"""sync fulltext index text index container when a relation with |
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152 |
fulltext_container set is added / removed |
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153 |
""" |
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154 |
__regid__ = 'updateftirel' |
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155 |
events = ('after_add_relation', 'after_delete_relation') |
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156 |
|
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157 |
def __call__(self): |
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158 |
rtype = self.rtype |
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159 |
session = self._cw |
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160 |
ftcontainer = session.vreg.schema.rschema(rtype).fulltext_container |
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161 |
if ftcontainer == 'subject': |
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162 |
session.repo.system_source.index_entity( |
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163 |
session, session.entity_from_eid(self.eidfrom)) |
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164 |
elif ftcontainer == 'object': |
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165 |
session.repo.system_source.index_entity( |
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166 |
session, session.entity_from_eid(self.eidto)) |
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167 |