b978abe473
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@1280 fd906abe-77d9-0310-91a1-e0d9ade77398
103 lines
2.9 KiB
Python
103 lines
2.9 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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Execution of a process.
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$Id$
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"""
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from zope.interface import implements
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from zope.component import adapts
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from cybertools.process.interfaces import IActivity, IExecution
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from cybertools.process.interfaces import IWorkItem, IActionHandler
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class Execution(object):
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implements(IExecution)
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def __init__(self, parent=None):
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self._currentActivity = None
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self._workItem = None
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self._parent = parent
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self._children = set()
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def getCurrentActivity(self): return self._currentActivity
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def setCurrentActivity(self, activity): self._currentActivity = activity
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currentActivity = property(getCurrentActivity, setCurrentActivity)
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def getWorkItem(self): return self._workItem
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def setWorkItem(self, item): self._workItem = item
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workItem = property(getWorkItem, setWorkItem)
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@property
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def parent(self): return self._parent
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@property
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def children(self): return self._children
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def trigger(self, qualifiers=set()):
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successors = [s for s in self.currentActivity.successors
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if not qualifiers
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or qualifiers.union(successor.qualifiers)]
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for successor in successors:
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if len(successors) == 1:
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execution = self
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else:
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execution = Execution(self)
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self.children.add(execution)
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successor.execute(execution)
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class WorkItem(object):
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implements(IWorkItem)
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def __init__(self, execution):
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self._execution = execution
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self._activity = execution.currentActivity
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@property
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def execution(self): return self._execution
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@property
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def activity(self): return self._activity
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_done = False
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@property
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def done(self): return self._done
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def submit(self, data={}):
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_done = True
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self.execution.trigger()
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class WorkActionHandler(object):
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""" A simple action handler that creates a work item.
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"""
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implements(IActionHandler)
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adapts(IActivity)
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def __init__(self, context):
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self.context = context
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def handle(self, execution):
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self.workItem = WorkItem(execution)
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