protected override IStream <TOut> CreateOutputStream(SubProcessArgs <TIn, TOut> args)
{
if (this.ExecutionContext is GetDefinitionExecutionContext)
{
var inputStream = new SingleStream <TIn>(this.Tracer.GetSubTraceMapper(this), this.ExecutionContext, this.NodeName, PushObservable.FromSingle(default(TIn)));
var outputStream = args.SubProcess(inputStream);
this.ExecutionContext.AddNode(this, outputStream.Observable, outputStream.TraceObservable);
}
Synchronizer synchronizer = new Synchronizer(args.NoParallelisation);
var outputObservable = args.Stream.Observable
.FlatMap(i =>
{
EventWaitHandle waitHandle = new EventWaitHandle(false, EventResetMode.ManualReset);
var inputStream = new SingleStream <TIn>(this.Tracer.GetSubTraceMapper(this), this.ExecutionContext, this.NodeName, PushObservable.FromSingle(i, waitHandle));
var outputStream = args.SubProcess(inputStream);
this.ExecutionContext.AddNode(this, outputStream.Observable, outputStream.TraceObservable);
IDisposable awaiter = null;
outputStream.Observable.Subscribe(j => { }, () => awaiter?.Dispose());
return(new DeferredWrapperPushObservable <TOut>(outputStream.Observable, () =>
{
awaiter = synchronizer.WaitBeforeProcess();
waitHandle.Set();
}));
});
return(base.CreateUnsortedStream(outputObservable));
}
public SubProcessStreamNode(string name, SubProcessArgs <TIn, TOut> args) : base(name, args)
{
}
