9774638a5e
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@1274 fd906abe-77d9-0310-91a1-e0d9ade77398
116 lines
3.6 KiB
Python
116 lines
3.6 KiB
Python
#
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# Copyright (c) 2006 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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Process definitions.
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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 cybertools.process.interfaces import INode, ITransition, IProcessDefinition
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from cybertools.process.interfaces import IActionHandler
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class Node(object):
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implements(INode)
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def __init__(self, process=None, name=u'', title=u'', handlerName=''):
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self._process = process
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self._incoming = set()
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self._outgoing = set()
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self._handlerName = handlerName
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self.__name__ = name
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self.title = title
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def getProcess(self): return self._process
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def setProcess(self, prc): self._process = prc
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process = property(getProcess, setProcess)
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@property
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def outgoing(self): return self._outgoing
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@property
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def incoming(self): return self._incoming
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def getHandlerName(self): return self._handlerName
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def setHandlerName(self, name): self._handlerName = name
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handlerName = property(getHandlerName, setHandlerName)
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def addTransition(self, destination):
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transition = Transition(destination)
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self.outgoing.add(transition)
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transition.source = self
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if transition.destination.process is None:
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transition.destination.process = self.process
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def execute(self, execution):
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execution.currentNode = self
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handler = component.queryAdapter(self, IActionHandler, name=self.handlerName)
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if handler is not None:
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handler.handle(execution) # creates work item; work item triggers execution
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else:
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execution.trigger()
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class Transition(object):
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implements(ITransition)
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def __init__(self, destination, qualifier=u''):
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self._source = None
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self._destination = destination
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self._qualifier = qualifier
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def getSource(self): return self._source
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def setSource(self, node): self._source = node
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source = property(getSource, setSource)
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def getDestination(self): return self._destination
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def setDestination(self, node): self._destination = node
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destination = property(getDestination, setDestination)
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def getQualifier(self): return self._qualifier
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def setQualifier(self, node): self._qualifier = node
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qualifier = property(getQualifier, setQualifier)
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def take(self, execution):
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self.destination.execute(execution)
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class ProcessDefinition(object):
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implements(IProcessDefinition)
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def __init__(self):
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self._instances = set()
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self._startNode = Node(self)
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self._endNode = Node(self)
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@property
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def instances(self): return self._instances
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def getStartNode(self): return self._startNode
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def setStartNode(self, node): self._startNode = node
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startNode = property(getStartNode, setStartNode)
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def getEndNode(self): return self._endNode
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def setEndNode(self, node): self._endNode = node
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endNode = property(getEndNode, setEndNode)
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