protected internal virtual void PrepareScopeExecution(IActivityExecution scopeExecution, int nrOfInstances)
{
// set the MI-body scoped variables
SetLoopVariable(scopeExecution, NumberOfInstances, nrOfInstances);
SetLoopVariable(scopeExecution, NumberOfCompletedInstances, 0);
SetLoopVariable(scopeExecution, NumberOfActiveInstances, nrOfInstances);
scopeExecution.Activity = null;
scopeExecution.InActivate();
}
public override void Execute(IActivityExecution execution)
{
execution.InActivate();
LockConcurrentRoot(execution);
var activity = execution.Activity;
if (ActivatesGateway(execution, activity))
{
Log.ActivityActivation(activity.Id);
var joinedExecutions = execution.FindInactiveConcurrentExecutions(activity);
var defaultSequenceFlow = (string)execution.Activity.GetProperty("default");
IList <IPvmTransition> transitionsToTake = new List <IPvmTransition>();
// find matching non-default sequence flows
foreach (var outgoingTransition in execution.Activity.OutgoingTransitions)
{
if (ReferenceEquals(defaultSequenceFlow, null) || !outgoingTransition.Id.Equals(defaultSequenceFlow))
{
var condition = (ICondition)outgoingTransition.GetProperty(BpmnParse.PropertynameCondition);
if ((condition == null) || condition.Evaluate(execution))
{
transitionsToTake.Add(outgoingTransition);
}
}
}
// if none found, add default flow
if (transitionsToTake.Count == 0)
{
if (!ReferenceEquals(defaultSequenceFlow, null))
{
var 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);
}
}
//private static Logger LOG = ProcessEngineLogger.TEST_LOGGER.GetLogger();
public void Execute(IActivityExecution execution)
{
var activity = execution.Activity;
var outgoingTransitions = execution.Activity.OutgoingTransitions;
execution.InActivate();
var joinedExecutions = execution.FindInactiveConcurrentExecutions(activity);
var nbrOfExecutionsToJoin = execution.Activity.IncomingTransitions.Count;
var nbrOfExecutionsJoined = joinedExecutions.Count;
if (nbrOfExecutionsJoined == nbrOfExecutionsToJoin)
{
Debug.WriteLine("parallel gateway '" + activity.Id + "' activates: " + nbrOfExecutionsJoined + " of " + nbrOfExecutionsToJoin + " joined");
execution.LeaveActivityViaTransitions(outgoingTransitions, joinedExecutions);
}
}
public override void ConcurrentChildExecutionEnded(IActivityExecution scopeExecution,
IActivityExecution endedExecution)
{
int nrOfCompletedInstances = GetLoopVariable(scopeExecution, NumberOfCompletedInstances) + 1;
SetLoopVariable(scopeExecution, NumberOfCompletedInstances, nrOfCompletedInstances);
int nrOfActiveInstances = GetLoopVariable(scopeExecution, NumberOfActiveInstances) - 1;
SetLoopVariable(scopeExecution, NumberOfActiveInstances, nrOfActiveInstances);
// inactivate the concurrent execution
endedExecution.InActivate();
endedExecution.ActivityInstanceId = null;
// join
scopeExecution.ForceUpdate();
// TODO: should the completion condition be evaluated on the scopeExecution or on the endedExecution?
if (CompletionConditionSatisfied(endedExecution) || AllExecutionsEnded(scopeExecution, endedExecution))
{
var childExecutions =
new List <IActivityExecution>(((PvmExecutionImpl)scopeExecution).NonEventScopeExecutions);
foreach (var childExecution in childExecutions)
{
if (childExecution.IsActive || (childExecution.Activity == null))
{
((PvmExecutionImpl)childExecution).DeleteCascade(
"Multi instance completion condition satisfied.");
}
else
{
childExecution.Remove();
}
}
scopeExecution.Activity = (IPvmActivity)endedExecution.Activity.FlowScope;
scopeExecution.IsActive = true;
Leave(scopeExecution);
}
}
public override void Execute(IActivityExecution execution)
{
// Join
var activity = execution.Activity;
var outgoingTransitions = execution.Activity.OutgoingTransitions;
execution.InActivate();
LockConcurrentRoot(execution);
var joinedExecutions = execution.FindInactiveConcurrentExecutions(activity);
var nbrOfExecutionsToJoin = execution.Activity.IncomingTransitions.Count;
var nbrOfExecutionsJoined = joinedExecutions.Count;
if (nbrOfExecutionsJoined == nbrOfExecutionsToJoin)
{
// Fork
Log.ActivityActivation(activity.Id, nbrOfExecutionsJoined, nbrOfExecutionsToJoin);
execution.LeaveActivityViaTransitions(outgoingTransitions, joinedExecutions);
}
else
{
Log.NoActivityActivation(activity.Id, nbrOfExecutionsJoined, nbrOfExecutionsToJoin);
}
}