/// <summary> /// Initializes a new instance of the <see cref="ParallelVariableLength{TIn, TOut}"/> class. /// </summary> /// <param name="pipeline">Pipeline to which this component belongs.</param> /// <param name="transform">Function mapping keyed input producers to output producers.</param> /// <param name="outputDefaultIfDropped">When true, a result is produced even if a message is dropped in processing one of the input elements. In this case the corresponding output element is set to a default value.</param> /// <param name="defaultValue">Default value to use when messages are dropped in processing one of the input elements.</param> /// <param name="name">Name for this component (defaults to ParallelVariableLength).</param> /// <param name="defaultDeliveryPolicy">Pipeline-level default delivery policy to be used by this component (defaults to <see cref="DeliveryPolicy.Unlimited"/> if unspecified).</param> public ParallelVariableLength(Pipeline pipeline, Func <int, IProducer <TIn>, IProducer <TOut> > transform, bool outputDefaultIfDropped = false, TOut defaultValue = default, string name = null, DeliveryPolicy defaultDeliveryPolicy = null) : base(pipeline, name ?? nameof(ParallelVariableLength <TIn, TOut>), defaultDeliveryPolicy) { this.parallelTransform = transform; this.inConnector = this.CreateInputConnectorFrom <TIn[]>(pipeline, nameof(this.inConnector)); this.splitter = this.CreateReceiver <TIn[]>(this, this.Receive, nameof(this.splitter)); this.inConnector.PipeTo(this.splitter); this.activeBranchesEmitter = this.CreateEmitter <int>(this, nameof(this.activeBranchesEmitter)); var interpolator = outputDefaultIfDropped ? Reproducible.ExactOrDefault <TOut>(defaultValue) : Reproducible.Exact <TOut>(); this.join = new Join <int, TOut, TOut[]>( this, interpolator, (count, values) => values, 0, count => Enumerable.Range(0, count)); this.activeBranchesEmitter.PipeTo(this.join.InPrimary); this.outConnector = this.CreateOutputConnectorTo <TOut[]>(pipeline, nameof(this.outConnector)); this.join.PipeTo(this.outConnector); }