2cd4877488
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@2845 fd906abe-77d9-0310-91a1-e0d9ade77398
46 lines
1.4 KiB
Python
46 lines
1.4 KiB
Python
#
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# Copyright (c) 2008 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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Common functionality.
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$Id$
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"""
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class RelationSet(object):
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def __init__(self, parent, attributeName):
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self.parent = parent
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self.attributeName = attributeName
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self.data = {}
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def add(self, related):
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self.data[related.name] = related
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relatedData = getattr(related, self.attributeName).data
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relatedData[self.parent.name] = self.parent
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def remove(self, related):
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name = related.name
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del self.data[name]
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relatedData = getattr(related, self.attributeName).data
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del relatedData[self.parent.name]
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def __iter__(self):
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for obj in self.data.values():
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yield obj
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