SequenceFlow FindFlowToExecute(IExecutionContext context)
{
if (!HasOutgoing)
{
return(null);
}
if (Outgoing.Count() == 1)
{
// join flows
return(Parent.FindElement <SequenceFlow>(Outgoing.ElementAt(0).Text));
}
foreach (var og in Outgoing)
{
var flow = Parent.FindElement <SequenceFlow>(og.Text);
if (flow != null)
{
if (flow.Evaluate(context))
{
return(flow);
}
}
}
if (!String.IsNullOrEmpty(Default))
{
return(Parent.FindElement <SequenceFlow>(Default));
}
return(null);
}
protected virtual ValueTask CompleteBody(IExecutionContext context)
{
if (Outgoing == null)
{
if (_onComplete != null)
{
return(_onComplete(context, this));
}
return(ValueTask.CompletedTask);
}
if (Outgoing.Count() == 1)
{
// simple outgouning - same token
var targetFlow = Parent.FindElement <SequenceFlow>(Outgoing.First().Text);
context.Schedule(targetFlow, _onComplete, _token);
_token = null;
}
else
{
// same as task + parallelGateway
Parent.KillToken(_token);
_token = null;
foreach (var flowId in Outgoing)
{
var targetFlow = Parent.FindElement <SequenceFlow>(flowId.Text);
context.Schedule(targetFlow, _onComplete, Parent.NewToken());
}
}
if (_onComplete != null)
{
return(_onComplete(context, this));
}
return(ValueTask.CompletedTask);
}
protected void ScheduleOutgoing(IExecutionContext context)
{
if (Outgoing == null)
{
return;
}
if (Outgoing.Count() == 1)
{
var targetFlow = Parent.FindElement <SequenceFlow>(Outgoing.First().Text);
context.Schedule(targetFlow, _onComplete, _token);
}
else
{
Parent.KillToken(_token);
foreach (var o in Outgoing)
{
var targetFlow = Parent.FindElement <SequenceFlow>(o.Text);
context.Schedule(targetFlow, _onComplete, Parent.NewToken());
}
}
}