protected override async Task <bool> Process(CMMNExecutionContext executionContext, CaseEltInstance elt, CancellationToken cancellationToken)
{
Subscription sub = null;
var terminate = await TrySubscribe(executionContext, elt, CMMNConstants.ExternalTransitionNames.Terminate, cancellationToken);
var manualStart = await TrySubscribe(executionContext, elt, CMMNConstants.ExternalTransitionNames.ManualStart, cancellationToken);
var disable = await TrySubscribe(executionContext, elt, CMMNConstants.ExternalTransitionNames.Disable, cancellationToken);
var reenable = await TrySubscribe(executionContext, elt, CMMNConstants.ExternalTransitionNames.Reenable, cancellationToken);
if (elt.TakeStageState == null)
{
executionContext.Instance.MakeTransition(elt, CMMNTransitions.Create);
}
if (elt.TakeStageState == TaskStageStates.Available)
{
if (elt.ManualActivationRule != null && elt.IsManualActivationRuleSatisfied(executionContext.Instance.ExecutionContext))
{
executionContext.Instance.MakeTransition(elt, CMMNTransitions.Enable);
return(false);
}
executionContext.Instance.MakeTransition(elt, CMMNTransitions.Start);
}
if (elt.TakeStageState == TaskStageStates.Enabled)
{
if (disable.IsCaptured)
{
sub = await TryReset(executionContext, elt, CMMNConstants.ExternalTransitionNames.Disable, cancellationToken);
executionContext.Instance.MakeTransition(elt, CMMNTransitions.Disable, incomingTokens: MergeParameters(executionContext, sub.Parameters));
return(false);
}
if (!manualStart.IsCaptured)
{
return(false);
}
sub = await TryReset(executionContext, elt, CMMNConstants.ExternalTransitionNames.ManualStart, cancellationToken);
executionContext.Instance.MakeTransition(elt, CMMNTransitions.ManualStart, incomingTokens: MergeParameters(executionContext, sub.Parameters));
}
if (elt.TakeStageState == TaskStageStates.Disabled)
{
if (reenable.IsCaptured)
{
sub = await TryReset(executionContext, elt, CMMNConstants.ExternalTransitionNames.Reenable, cancellationToken);
executionContext.Instance.MakeTransition(elt, CMMNTransitions.Reenable, incomingTokens: MergeParameters(executionContext, sub.Parameters));
}
return(false);
}
if (elt.TakeStageState == TaskStageStates.Active)
{
try
{
if (terminate.IsCaptured)
{
sub = await TryReset(executionContext, elt, CMMNConstants.ExternalTransitionNames.Terminate, cancellationToken);
executionContext.Instance.MakeTransition(elt, CMMNTransitions.Terminate, incomingTokens: MergeParameters(executionContext, sub.Parameters));
return(true);
}
return(await ProtectedProcess(executionContext, elt, cancellationToken));
}
catch (Exception ex)
{
executionContext.Instance.MakeTransition(elt, CMMNTransitions.Fault, ex.ToString());
return(false);
}
}
return(false);
}