protected internal virtual bool ActivatesGateway(IActivityExecution execution, IPvmActivity gatewayActivity)
{
var numExecutionsGuaranteedToActivate = gatewayActivity.IncomingTransitions.Count;
var scopeExecution = execution.IsScope ? execution : execution.Parent;
var executionsAtGateway = execution.FindInactiveConcurrentExecutions(gatewayActivity);
if (executionsAtGateway.Count >= numExecutionsGuaranteedToActivate)
{
return(true);
}
var executionsNotAtGateway = GetLeafExecutions(scopeExecution);
foreach (var it in executionsAtGateway)
{
executionsNotAtGateway.Remove(it);
}
foreach (var executionNotAtGateway in executionsNotAtGateway)
{
if (CanReachActivity(executionNotAtGateway, gatewayActivity))
{
return(false);
}
}
// if no more token may arrive, then activate
return(true);
}
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);
}
}
protected internal virtual bool AllExecutionsEnded(IActivityExecution scopeExecution,
IActivityExecution endedExecution)
{
var numberOfInactiveConcurrentExecutions =
endedExecution.FindInactiveConcurrentExecutions(endedExecution.Activity).Count;
var concurrentExecutions = scopeExecution.Executions.Count;
// no active instances exist and all concurrent executions are inactive
return((GetLocalLoopVariable(scopeExecution, NumberOfActiveInstances) <= 0) &&
(numberOfInactiveConcurrentExecutions == concurrentExecutions));
}
//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 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);
}
}