protected internal virtual bool CanReachActivity(IActivityExecution execution, IPvmActivity activity)
{
IPvmTransition pvmTransition = execution.Transition;
if (pvmTransition != null)
{
return(IsReachable(pvmTransition.Destination, activity, new HashSet <IPvmActivity>()));
}
return(IsReachable(execution.Activity, activity, new HashSet <IPvmActivity>()));
}
public InstantiationStack(IList <IPvmActivity> activities, IPvmActivity targetActivity,
IPvmTransition 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;
}
/// <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(IActivityExecution execution)
{
Log.LeavingActivity(execution.Activity.Id);
IPvmTransition outgoingSeqFlow = null;
var defaultSequenceFlow = (string)execution.Activity.GetProperty("default");
var transitionIterator = execution.Activity.OutgoingTransitions.GetEnumerator();
while ((outgoingSeqFlow == null) && transitionIterator.MoveNext())
{
var seqFlow = transitionIterator.Current;
var condition = (ICondition)seqFlow.GetProperty(BpmnParse.PropertynameCondition);
if (((condition == null) &&
(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 (!ReferenceEquals(defaultSequenceFlow, null))
{
var 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);
}
}
}
public void Execute(IActivityExecution execution)
{
string @var = (string)execution.GetVariable("var");
IPvmTransition transition = null;
try
{
ExecuteLogic(@var);
transition = execution.Activity.FindOutgoingTransition("no-exception");
}
catch (System.Exception)
{
transition = execution.Activity.FindOutgoingTransition("exception");
}
execution.LeaveActivityViaTransition(transition);
}
public void Execute(IActivityExecution execution)
{
IPvmTransition transition = null;
var creditRating = (string)execution.GetVariable("creditRating");
if (creditRating.Equals("AAA+"))
{
transition = execution.Activity.FindOutgoingTransition("wow");
}
else if (creditRating.Equals("Aaa-"))
{
transition = execution.Activity.FindOutgoingTransition("nice");
}
else
{
transition = execution.Activity.FindOutgoingTransition("default");
}
execution.LeaveActivityViaTransition(transition);
}
public virtual void NotTakingTranistion(IPvmTransition outgoingTransition)
{
LogDebug("001", "Not taking transition '{0}', outgoing execution has ended.", outgoingTransition);
}
public void Signal(IActivityExecution execution, String signalName, Object signalData)
{
IPvmTransition transition = execution.Activity.OutgoingTransitions[0];
execution.LeaveActivityViaTransition(transition);
}
public virtual void Execute(IActivityExecution execution)
{
IPvmTransition transition = execution.Activity.OutgoingTransitions[0];
execution.LeaveActivityViaTransition(transition);
}
public OutgoingExecution(IActivityExecution outgoingExecution, IPvmTransition outgoingTransition)
{
this.outgoingExecution = outgoingExecution;
this.OutgoingTransition = outgoingTransition;
outgoingExecution.Transition = (outgoingTransition);
}
