3a5daedb83
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@1685 fd906abe-77d9-0310-91a1-e0d9ade77398
108 lines
3.3 KiB
Python
108 lines
3.3 KiB
Python
#
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# Copyright (c) 2007 Helmut Merz helmutm@cy55.de
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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Storage manager implementation for a full Zope 3 environment.
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$Id$
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"""
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from zope import component
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from zope.interface import implements
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from zope.app.component.hooks import getSite
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from zope.app.container.interfaces import IContained
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from zope.app.intid.interfaces import IIntIds
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from zope.traversing.api import traverse, getPath
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from persistent import Persistent
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from cybertools.util.adapter import AdapterFactory
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storages = AdapterFactory()
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class PersistentObject(Persistent):
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implements(IContained)
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__parent__ = __name__ = None
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def update(self, data):
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self.__dict__.update(data)
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def get(self):
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return self.__dict__
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class Adapter(object):
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persistentFactory = PersistentObject
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persistent = address = uid = None
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def __init__(self, context):
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self.context = context
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def save(self, address=None):
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intids = component.getUtility(IIntIds)
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persistent = self.persistent
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if persistent is None:
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if self.address is None:
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self.address = address
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else:
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address = self.address
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path, name = address.rsplit('/', 1)
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container = traverse(getSite(), path + '/')
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if name in container:
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persistent = container[name]
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uid = intids.getId(persistent)
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else:
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persistent = self.persistentFactory()
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container[name] = persistent
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uid = intids.register(persistent)
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else:
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uid = intids.getId(persistent)
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persistent.update(self.context.__dict__)
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persistent._p_changed = True
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self.persistent = persistent
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self.uid = uid
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return uid
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def load(self, address=None):
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intids = component.getUtility(IIntIds)
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if self.uid is not None: # if ever possible we use the intId
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address = self.uid
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if type(address) is int: # seems to be an intId
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persistent = intids.getObject(address)
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self.address = getPath(persistent)
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else:
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if self.address is None:
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self.address = address
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else:
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address = self.address
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persistent = traverse(getSite(), address)
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self.uid = intids.register(persistent)
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t = type(self.context)
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factory = t is type and self.context or t
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obj = self.context = factory()
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obj.__dict__.update(persistent.get())
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self.persistent = persistent
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return obj
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storages.register(Adapter, object)
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