def wrapWorkflowMethod(self, ob, method_id, func, args, kw):
'''
Allows the user to request a workflow action. This method
must perform its own security checks.
'''
sdef = self._getWorkflowStateOf(ob)
if sdef is None:
raise WorkflowException, 'Object is in an undefined state'
if method_id not in sdef.transitions:
raise Unauthorized(method_id)
tdef = self.transitions.get(method_id, None)
if tdef is None or tdef.trigger_type != TRIGGER_WORKFLOW_METHOD:
raise WorkflowException, (
'Transition %s is not triggered by a workflow method' %
method_id)
if not self._checkTransitionGuard(tdef, ob):
raise Unauthorized(method_id)
res = apply(func, args, kw)
try:
self._changeStateOf(ob, tdef)
except ObjectDeleted:
# Re-raise with a different result.
raise ObjectDeleted(res)
except ObjectMoved, ex:
# Re-raise with a different result.
raise ObjectMoved(ex.getNewObject(), res)
try:
sdef = self._executeTransition(ob, tdef, kwargs)
except ObjectMoved, ex:
moved = 1
ob = ex.getNewObject()
sdef = self._getWorkflowStateOf(ob)
if sdef is None:
break
tdef = self._findAutomaticTransition(ob, sdef)
if tdef is None:
# No more automatic transitions.
break
# Else continue.
if moved:
# Re-raise.
raise ObjectMoved(ob)
def _executeTransition(self, ob, tdef=None, kwargs=None):
'''
Private method.
Puts object in a new state.
'''
sci = None
econtext = None
moved = 0
# Figure out the old and new states.
old_sdef = self._getWorkflowStateOf(ob)
old_state = old_sdef.getId()
if tdef is None:
new_state = self.initial_state