Source code for zope.component.persistentregistry

##############################################################################
#
# Copyright (c) 2004 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
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"""Persistent component managers.
"""
from persistent import Persistent
from persistent.mapping import PersistentMapping
from persistent.list import PersistentList
from zope.interface.adapter import VerifyingAdapterRegistry
from zope.interface.registry import Components

[docs]class PersistentAdapterRegistry(VerifyingAdapterRegistry, Persistent): """ An adapter registry that is also a persistent object. """ def changed(self, originally_changed): if originally_changed is self: self._p_changed = True super(PersistentAdapterRegistry, self).changed(originally_changed) def __getstate__(self): state = super(PersistentAdapterRegistry, self).__getstate__().copy() for name in self._delegated: state.pop(name, 0) state.pop('ro', None) return state def __setstate__(self, state): bases = state.pop('__bases__', ()) super(PersistentAdapterRegistry, self).__setstate__(state) self._createLookup() self.__bases__ = bases self._v_lookup.changed(self)
[docs]class PersistentComponents(Components): """ A component implementation that uses `PersistentAdapterRegistry`. Note that this object itself is *not* `Persistent`. """ def _init_registries(self): self.adapters = PersistentAdapterRegistry() self.utilities = PersistentAdapterRegistry() def _init_registrations(self): self._utility_registrations = PersistentMapping() self._adapter_registrations = PersistentMapping() self._subscription_registrations = PersistentList() self._handler_registrations = PersistentList()