first draft for a simple hooks based custom attribute storage,
with a BytesFileSystemStorage POC implementation.
Basically:
* a dictionary contains maps from which attribute of which entity types are
mapped to which custom storage
* hooks check for one of these entity type being added/modified/deleted
* read is based on the sql generator callback mecanism (used in vcsfile for
instance)
* all storages have the same basic interface (read, add, update, delete),
and should be pluggable in a transparent way (except at migration time
when one want to change from a storage to another)
* the sample BytesFileSystemStorage:
* may store Bytes attributes content of any entity type as file on the file system
* is based on one FSPATH rql/sql function and another _fsopen only available in sql
* has a dumb file name allocation algorithm
"""helper functions for application hooks
:organization: Logilab
:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
"""
__docformat__ = "restructuredtext en"
from logilab.common.deprecation import deprecated, class_moved
from cubicweb import RepositoryError
from cubicweb.server import hook
@deprecated('[3.6] entity_oldnewvalue should be imported from cw.server.hook')
def entity_oldnewvalue(entity, attr):
"""return the "name" attribute of the entity with the given eid"""
return hook.entity_oldnewvalue(entity, attr)
@deprecated('[3.6] entity_name is deprecated, use entity.name')
def entity_name(session, eid):
"""return the "name" attribute of the entity with the given eid"""
return session.entity_from_eid(eid).name
@deprecated('[3.6] rproperty is deprecated, use session.schema_rproperty')
def rproperty(session, rtype, eidfrom, eidto, rprop):
return session.rproperty(rtype, eidfrom, eidto, rprop)
SendMailOp = class_moved(hook.SendMailOp)