public OutgoingExecution(PvmExecutionImpl outgoingExecution, PvmTransition outgoingTransition)
{
this.outgoingExecution = outgoingExecution;
this.outgoingTransition = outgoingTransition;
outgoingExecution.setTransition(outgoingTransition);
outgoingExecution.ActivityInstanceId = null;
}
public InstantiationStack(IList <PvmActivity> activities, PvmActivity targetActivity, PvmTransition targetTransition)
{
EnsureUtil.ensureOnlyOneNotNull("target must be either a transition or an activity", targetActivity, targetTransition);
this.activities = activities;
// TODO: make this a subclass that contains targetActivity and targetTransition?!
this.targetActivity = targetActivity;
this.targetTransition = targetTransition;
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public void execute(org.camunda.bpm.engine.impl.pvm.delegate.ActivityExecution execution) throws Exception
public virtual void execute(ActivityExecution execution)
{
execution.inactivate();
lockConcurrentRoot(execution);
PvmActivity activity = execution.Activity;
if (activatesGateway(execution, activity))
{
LOG.activityActivation(activity.Id);
IList <ActivityExecution> joinedExecutions = execution.findInactiveConcurrentExecutions(activity);
string defaultSequenceFlow = (string)execution.Activity.getProperty("default");
IList <PvmTransition> transitionsToTake = new List <PvmTransition>();
// find matching non-default sequence flows
foreach (PvmTransition outgoingTransition in execution.Activity.OutgoingTransitions)
{
if (string.ReferenceEquals(defaultSequenceFlow, null) || !outgoingTransition.Id.Equals(defaultSequenceFlow))
{
Condition condition = (Condition)outgoingTransition.getProperty(BpmnParse.PROPERTYNAME_CONDITION);
if (condition == null || condition.evaluate(execution))
{
transitionsToTake.Add(outgoingTransition);
}
}
}
// if none found, add default flow
if (transitionsToTake.Count == 0)
{
if (!string.ReferenceEquals(defaultSequenceFlow, null))
{
PvmTransition defaultTransition = execution.Activity.findOutgoingTransition(defaultSequenceFlow);
if (defaultTransition == null)
{
throw LOG.missingDefaultFlowException(execution.Activity.Id, defaultSequenceFlow);
}
transitionsToTake.Add(defaultTransition);
}
else
{
// No sequence flow could be found, not even a default one
throw LOG.stuckExecutionException(execution.Activity.Id);
}
}
// take the flows found
execution.leaveActivityViaTransitions(transitionsToTake, joinedExecutions);
}
else
{
LOG.noActivityActivation(activity.Id);
}
}
protected internal virtual bool canReachActivity(ActivityExecution execution, PvmActivity activity)
{
PvmTransition pvmTransition = execution.Transition;
if (pvmTransition != null)
{
return(isReachable(pvmTransition.Destination, activity, new HashSet <PvmActivity>()));
}
else
{
return(isReachable(execution.Activity, activity, new HashSet <PvmActivity>()));
}
}
protected internal override void eventNotificationsCompleted(PvmExecutionImpl execution)
{
base.eventNotificationsCompleted(execution);
execution.activityInstanceStarted();
ExecutionStartContext startContext = execution.ExecutionStartContext;
InstantiationStack instantiationStack = startContext.InstantiationStack;
PvmExecutionImpl propagatingExecution = execution;
ActivityImpl activity = execution.getActivity();
if (activity.ActivityBehavior is ModificationObserverBehavior)
{
ModificationObserverBehavior behavior = (ModificationObserverBehavior)activity.ActivityBehavior;
IList <ActivityExecution> concurrentExecutions = behavior.initializeScope(propagatingExecution, 1);
propagatingExecution = (PvmExecutionImpl)concurrentExecutions[0];
}
// if the stack has been instantiated
if (instantiationStack.Activities.Count == 0 && instantiationStack.TargetActivity != null)
{
// as if we are entering the target activity instance id via a transition
propagatingExecution.ActivityInstanceId = null;
// execute the target activity with this execution
startContext.applyVariables(propagatingExecution);
propagatingExecution.setActivity(instantiationStack.TargetActivity);
propagatingExecution.performOperation(PvmAtomicOperation_Fields.ACTIVITY_START_CREATE_SCOPE);
}
else if (instantiationStack.Activities.Count == 0 && instantiationStack.TargetTransition != null)
{
// as if we are entering the target activity instance id via a transition
propagatingExecution.ActivityInstanceId = null;
// execute the target transition with this execution
PvmTransition transition = instantiationStack.TargetTransition;
startContext.applyVariables(propagatingExecution);
propagatingExecution.setActivity(transition.Source);
propagatingExecution.setTransition((TransitionImpl)transition);
propagatingExecution.performOperation(PvmAtomicOperation_Fields.TRANSITION_START_NOTIFY_LISTENER_TAKE);
}
else
{
// else instantiate the activity stack further
propagatingExecution.setActivity(null);
propagatingExecution.performOperation(PvmAtomicOperation_Fields.ACTIVITY_INIT_STACK);
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public void execute(org.camunda.bpm.engine.impl.pvm.delegate.ActivityExecution execution) throws Exception
public virtual void execute(ActivityExecution execution)
{
string var = (string)execution.getVariable("var");
PvmTransition transition = null;
try
{
executeLogic(var);
transition = execution.Activity.findOutgoingTransition("no-exception");
}
catch (Exception)
{
transition = execution.Activity.findOutgoingTransition("exception");
}
execution.leaveActivityViaTransition(transition);
}
/// <summary>
/// The default behaviour of BPMN, taking every outgoing sequence flow
/// (where the condition evaluates to true), is not valid for an exclusive
/// gateway.
///
/// Hence, this behaviour is overriden and replaced by the correct behavior:
/// selecting the first sequence flow which condition evaluates to true
/// (or which hasn't got a condition) and leaving the activity through that
/// sequence flow.
///
/// If no sequence flow is selected (ie all conditions evaluate to false),
/// then the default sequence flow is taken (if defined).
/// </summary>
public override void doLeave(ActivityExecution execution)
{
LOG.leavingActivity(execution.Activity.Id);
PvmTransition outgoingSeqFlow = null;
string defaultSequenceFlow = (string)execution.Activity.getProperty("default");
IEnumerator <PvmTransition> transitionIterator = execution.Activity.OutgoingTransitions.GetEnumerator();
while (outgoingSeqFlow == null && transitionIterator.MoveNext())
{
PvmTransition seqFlow = transitionIterator.Current;
Condition condition = (Condition)seqFlow.getProperty(BpmnParse.PROPERTYNAME_CONDITION);
if ((condition == null && (string.ReferenceEquals(defaultSequenceFlow, null) || !defaultSequenceFlow.Equals(seqFlow.Id))) || (condition != null && condition.evaluate(execution)))
{
LOG.outgoingSequenceFlowSelected(seqFlow.Id);
outgoingSeqFlow = seqFlow;
}
}
if (outgoingSeqFlow != null)
{
execution.leaveActivityViaTransition(outgoingSeqFlow);
}
else
{
if (!string.ReferenceEquals(defaultSequenceFlow, null))
{
PvmTransition defaultTransition = execution.Activity.findOutgoingTransition(defaultSequenceFlow);
if (defaultTransition != null)
{
execution.leaveActivityViaTransition(defaultTransition);
}
else
{
throw LOG.missingDefaultFlowException(execution.Activity.Id, defaultSequenceFlow);
}
}
else
{
//No sequence flow could be found, not even a default one
throw LOG.stuckExecutionException(execution.Activity.Id);
}
}
}
/// <summary>
/// Actual implementation of leaving an activity.
/// </summary>
/// <param name="execution">
/// The current execution context </param>
/// <param name="checkConditions">
/// Whether or not to check conditions before determining whether or
/// not to take a transition. </param>
protected internal virtual void performOutgoingBehavior(ActivityExecution execution, bool checkConditions, IList <ActivityExecution> reusableExecutions)
{
LOG.leavingActivity(execution.Activity.Id);
string defaultSequenceFlow = (string)execution.Activity.getProperty("default");
IList <PvmTransition> transitionsToTake = new List <PvmTransition>();
IList <PvmTransition> outgoingTransitions = execution.Activity.OutgoingTransitions;
foreach (PvmTransition outgoingTransition in outgoingTransitions)
{
if (string.ReferenceEquals(defaultSequenceFlow, null) || !outgoingTransition.Id.Equals(defaultSequenceFlow))
{
Condition condition = (Condition)outgoingTransition.getProperty(BpmnParse.PROPERTYNAME_CONDITION);
if (condition == null || !checkConditions || condition.evaluate(execution))
{
transitionsToTake.Add(outgoingTransition);
}
}
}
if (transitionsToTake.Count == 1)
{
execution.leaveActivityViaTransition(transitionsToTake[0]);
}
else if (transitionsToTake.Count >= 1)
{
if (reusableExecutions == null || reusableExecutions.Count == 0)
{
execution.leaveActivityViaTransitions(transitionsToTake, Arrays.asList(execution));
}
else
{
execution.leaveActivityViaTransitions(transitionsToTake, reusableExecutions);
}
}
else
{
if (!string.ReferenceEquals(defaultSequenceFlow, null))
{
PvmTransition defaultTransition = execution.Activity.findOutgoingTransition(defaultSequenceFlow);
if (defaultTransition != null)
{
execution.leaveActivityViaTransition(defaultTransition);
}
else
{
throw LOG.missingDefaultFlowException(execution.Activity.Id, defaultSequenceFlow);
}
}
else if (outgoingTransitions.Count > 0)
{
throw LOG.missingConditionalFlowException(execution.Activity.Id);
}
else
{
if (((ActivityImpl)execution.Activity).CompensationHandler && isAncestorCompensationThrowing(execution))
{
execution.endCompensation();
}
else
{
LOG.missingOutgoingSequenceFlow(execution.Activity.Id);
execution.end(true);
}
}
}
}
public virtual void notTakingTranistion(PvmTransition outgoingTransition)
{
logDebug("001", "Not taking transition '{}', outgoing execution has ended.", outgoingTransition);
}
public virtual void execute(PvmExecutionImpl execution)
{
// calculate the propagating execution
PvmExecutionImpl propagatingExecution = execution;
PvmActivity activity = execution.getActivity();
IList <PvmTransition> transitionsToTake = execution.TransitionsToTake;
execution.TransitionsToTake = null;
// check whether the current scope needs to be destroyed
if (execution.Scope && activity.Scope)
{
if (!LegacyBehavior.destroySecondNonScope(execution))
{
if (execution.Concurrent)
{
// legacy behavior
LegacyBehavior.destroyConcurrentScope(execution);
}
else
{
propagatingExecution = execution.Parent;
LOG.debugDestroyScope(execution, propagatingExecution);
execution.destroy();
propagatingExecution.setActivity(execution.getActivity());
propagatingExecution.setTransition(execution.getTransition());
propagatingExecution.Active = true;
execution.remove();
}
}
}
else
{
// activity is not scope => nothing to do
propagatingExecution = execution;
}
// take the specified transitions
if (transitionsToTake.Count == 0)
{
throw new ProcessEngineException(execution.ToString() + ": No outgoing transitions from " + "activity " + activity);
}
else if (transitionsToTake.Count == 1)
{
propagatingExecution.setTransition(transitionsToTake[0]);
propagatingExecution.take();
}
else
{
propagatingExecution.inactivate();
IList <OutgoingExecution> outgoingExecutions = new List <OutgoingExecution>();
for (int i = 0; i < transitionsToTake.Count; i++)
{
PvmTransition transition = transitionsToTake[i];
PvmExecutionImpl scopeExecution = propagatingExecution.Scope ? propagatingExecution : propagatingExecution.Parent;
// reuse concurrent, propagating execution for first transition
PvmExecutionImpl concurrentExecution = null;
if (i == 0)
{
concurrentExecution = propagatingExecution;
}
else
{
concurrentExecution = scopeExecution.createConcurrentExecution();
if (i == 1 && !propagatingExecution.Concurrent)
{
outgoingExecutions.RemoveAt(0);
// get a hold of the concurrent execution that replaced the scope propagating execution
PvmExecutionImpl replacingExecution = null;
foreach (PvmExecutionImpl concurrentChild in scopeExecution.NonEventScopeExecutions)
{
if (!(concurrentChild == propagatingExecution))
{
replacingExecution = concurrentChild;
break;
}
}
outgoingExecutions.Add(new OutgoingExecution(replacingExecution, transitionsToTake[0]));
}
}
outgoingExecutions.Add(new OutgoingExecution(concurrentExecution, transition));
}
// start executions in reverse order (order will be reversed again in command context with the effect that they are
// actually be started in correct order :) )
outgoingExecutions.Reverse();
foreach (OutgoingExecution outgoingExecution in outgoingExecutions)
{
outgoingExecution.take();
}
}
}
