ab263bee19
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@649 fd906abe-77d9-0310-91a1-e0d9ade77398
83 lines
No EOL
2.3 KiB
Python
83 lines
No EOL
2.3 KiB
Python
#
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# Copyright (c) 2005 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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Implementation of the utilities needed for the relations package.
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$Id$
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"""
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from zope.interface import implements
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from zope.app import zapi
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from persistent import Persistent
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from zope.app.container.contained import Contained
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from interfaces import IRelationsRegistry
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class DummyRelationsRegistry(object):
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""" Dummy implementation for demonstration and test purposes.
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"""
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implements(IRelationsRegistry)
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def __init__(self):
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self.relations = []
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def register(self, relation):
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if relation not in self.relations:
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self.relations.append(relation)
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def unregister(self, relation):
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if relation in self.relations:
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self.relations.remove(relation)
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def query(self, **kw):
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result = []
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for r in self.relations:
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hit = True
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for k in kw:
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if k == 'relationship':
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if kw[k] != r.__class__:
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hit = False
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break
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elif not hasattr(r, k) or getattr(r, k) != kw[k]:
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hit = False
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break
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if hit:
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result.append(r)
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return result
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class RelationsRegistry(Persistent, Contained):
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""" Local utility for registering (cataloguing) and searching relations.
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"""
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implements(IRelationsRegistry)
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def register(self, relation):
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pass
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def unregister(self, relation):
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pass
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def query(self, **kw):
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result = []
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return result
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