protected internal virtual void HandleChildRemovalInScope(ExecutionEntity removedExecution)
{
// TODO: the following should be closer to PvmAtomicOperationDeleteCascadeFireActivityEnd
// (note though that e.g. boundary events expect concurrent executions to be preserved)
//
// Idea: attempting to prune and synchronize on the parent is the default behavior when
// a concurrent child is removed, but scope activities implementing ModificationObserverBehavior
// override this default (and thereforemust* take care of reorganization themselves)
// notify the behavior that a concurrent execution has been removed
// must be set due to deleteCascade behavior
ActivityImpl activity = removedExecution.Activity as ActivityImpl;
ScopeImpl flowScope = activity.FlowScope;
IActivityExecution scopeExecution = removedExecution.GetParentScopeExecution(false);
IActivityExecution executionInParentScope = removedExecution.IsConcurrent ? removedExecution : removedExecution.Parent;
if (flowScope.ActivityBehavior != null && flowScope.ActivityBehavior is IModificationObserverBehavior)
{
// let child removal be handled by the scope itself
IModificationObserverBehavior behavior = (IModificationObserverBehavior)flowScope.ActivityBehavior;
behavior.DestroyInnerInstance(executionInParentScope);
}
else
{
if (executionInParentScope.IsConcurrent)
{
executionInParentScope.Remove();
scopeExecution.TryPruneLastConcurrentChild();
scopeExecution.ForceUpdate();
}
}
}
public virtual void ConcurrentChildExecutionEnded(IActivityExecution scopeExecution,
IActivityExecution endedExecution)
{
// join
endedExecution.Remove();
scopeExecution.TryPruneLastConcurrentChild();
scopeExecution.ForceUpdate();
}
public override void DestroyInnerInstance(IActivityExecution concurrentExecution)
{
var scopeExecution = concurrentExecution.Parent;
concurrentExecution.Remove();
scopeExecution.ForceUpdate();
var nrOfActiveInstances = GetLoopVariable(scopeExecution, NumberOfActiveInstances);
SetLoopVariable(scopeExecution, NumberOfActiveInstances, nrOfActiveInstances - 1);
}
protected internal virtual void SignalCompensationDone(IActivityExecution execution)
{
// default behavior is to join compensating executions and propagate the signal if all executions have compensated
// only wait for non-event-scope executions cause a compensation event subprocess consume the compensation event and
// do not have to compensate embedded subprocesses (which are still non-event-scope executions)
if (((PvmExecutionImpl)execution).NonEventScopeExecutions.Count == 0)
{
if (execution.Parent != null)
{
var parent = execution.Parent;
execution.Remove();
parent.Signal(CompensationUtil.SignalCompensationDone, null);
}
}
}
/// <summary>
/// Tolerates the broken execution trees fixed with CAM-3727 where there may be more
/// ancestor scope executions than ancestor flow scopes;
/// In that case, the argument execution is removed, the parent execution of the argument
/// is returned such that one level of mismatch is corrected.
/// Note that this does not necessarily skip the correct scope execution, since
/// the broken parent-child relationships may be anywhere in the tree (e.g. consider a non-interrupting
/// boundary event followed by a subprocess (i.e. scope), when the subprocess ends, we would
/// skip the subprocess's execution).
/// </summary>
public static IActivityExecution DeterminePropagatingExecutionOnEnd(IActivityExecution propagatingExecution,
IDictionary <ScopeImpl, PvmExecutionImpl> activityExecutionMapping)
{
if (!propagatingExecution.IsScope)
{
return(propagatingExecution);
}
// superfluous scope executions won't be contained in the activity-execution mapping
if (activityExecutionMapping.Values.Contains((PvmExecutionImpl)propagatingExecution))
{
return(propagatingExecution);
}
// skip one scope
propagatingExecution.Remove();
var parent = propagatingExecution.Parent;
parent.Activity = (propagatingExecution.Activity);
return(propagatingExecution.Parent);
}
public static bool EventSubprocessConcurrentChildExecutionEnded(IActivityExecution scopeExecution,
IActivityExecution endedExecution)
{
var performLegacyBehavior = IsLegacyBehaviorRequired(endedExecution);
if (performLegacyBehavior)
{
Log.EndConcurrentExecutionInEventSubprocess();
// notify the grandparent flow scope in a similar way PvmAtomicOperationAcitivtyEnd does
var flowScope = endedExecution.Activity.FlowScope;
if (flowScope != null)
{
flowScope = flowScope.FlowScope;
if (flowScope != null)
{
if (flowScope == endedExecution.Activity.ProcessDefinition)
{
endedExecution.Remove();
scopeExecution.TryPruneLastConcurrentChild();
scopeExecution.ForceUpdate();
}
else
{
var flowScopeActivity = (IPvmActivity)flowScope;
var activityBehavior = flowScopeActivity.ActivityBehavior;
if (activityBehavior is ICompositeActivityBehavior)
{
((ICompositeActivityBehavior)activityBehavior).ConcurrentChildExecutionEnded(
scopeExecution, endedExecution);
}
}
}
}
}
return(performLegacyBehavior);
}
public void ConcurrentChildExecutionEnded(IActivityExecution scopeExecution, IActivityExecution endedExecution)
{
endedExecution.Remove();
scopeExecution.TryPruneLastConcurrentChild();
}
