b02329358a
git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@1041 fd906abe-77d9-0310-91a1-e0d9ade77398
138 lines
4.2 KiB
Python
138 lines
4.2 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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Definition of the Concept and related classes.
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$Id$
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"""
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from zope.app import zapi
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from zope.app.container.btree import BTreeContainer
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from zope.app.container.contained import Contained
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from zope.interface import implements
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from persistent import Persistent
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from cybertools.relation import DyadicRelation
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from cybertools.relation.registry import IRelationsRegistry, getRelations
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from interfaces import IConcept
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from interfaces import IConceptManager, IConceptManagerContained
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from interfaces import ILoopsContained
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# relation classes
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class ConceptRelation(DyadicRelation):
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""" A relation between concept objects.
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"""
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class ResourceRelation(DyadicRelation):
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""" A relation between a concept and a resource object.
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"""
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# concept
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class Concept(Contained, Persistent):
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implements(IConcept, IConceptManagerContained)
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_title = u''
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def getTitle(self): return self._title
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def setTitle(self, title): self._title = title
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title = property(getTitle, setTitle)
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def __init__(self, title=u''):
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self.title = title
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def getLoopsRoot(self):
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return zapi.getParent(self).getLoopsRoot()
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def getViewManager(self):
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return self.getLoopsRoot().getViewManager()
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# concept relations
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def getSubConcepts(self, relationships=None):
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if relationships is None:
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relationships = [ConceptRelation]
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rels = getRelations(first=self, relationships=relationships)
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return [r.second for r in rels]
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# TODO: sort...
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def getParentConcepts(self, relationships=None):
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if relationships is None:
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relationships = [ConceptRelation]
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rels = getRelations(second=self, relationships=relationships)
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return [r.first for r in rels]
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def assignConcept(self, concept, relationship=ConceptRelation):
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registry = zapi.getUtility(IRelationsRegistry)
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rel = relationship(self, concept)
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registry.register(rel)
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# TODO (?): avoid duplicates
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def deassignConcept(self, concept, relationships=None):
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if relationships is None:
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relationships = [ConceptRelation]
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registry = zapi.getUtility(IRelationsRegistry)
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relations = registry.query(first=self, second=concept,
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relationships=relationships)
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for rel in relations:
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registry.unregister(relation)
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# resource relations
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def getResources(self, relationships=None):
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if relationships is None:
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relationships = [ResourceRelation]
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rels = getRelations(first=self, relationships=relationships)
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return [r.second for r in rels]
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# TODO: sort...
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def assignResource(self, resource, relationship=ResourceRelation):
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registry = zapi.getUtility(IRelationsRegistry)
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registry.register(relationship(self, resource))
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# TODO (?): avoid duplicates
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def deassignResource(self, resource, relationships=None):
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if relationships is None:
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relationships = [ResourceRelation]
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registry = zapi.getUtility(IRelationsRegistry)
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relations = registry.query(first=self, second=resource,
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relationships=relationships)
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for rel in relations:
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registry.unregister(relation)
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# concept manager
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class ConceptManager(BTreeContainer):
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implements(IConceptManager, ILoopsContained)
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def getLoopsRoot(self):
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return zapi.getParent(self)
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def getViewManager(self):
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return self.getLoopsRoot().getViewManager()
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