Annotation Type Channel

  • @Qualifier
    public @interface Channel
    This qualifier indicates which channel should be injected / populated.

    This qualifier can be used to inject a Channel containing the items and signals propagated by the specified channel. For example, it can be used to @Inject a Publisher representing a channel managed by the Reactive Messaging implementation.

    Can be injected:

    • Publisher<X> with X the payload type
    • Publisher<Message<X>> with X the payload type
    • PublisherBuilder<Message<X>> with X the payload type
    • PublisherBuilder<X> with X the payload type

    When this qualifier is used on an Emitter, it indicates which channel received the emitted values / signals:

     @Inject @Channel("my-channel") Emitter<String> emitter;
     // ...
    A subscriber for the above channel must be found by the time a message is emitted to the channel. Otherwise, IllegalStateException must be thrown.
    • Required Element Summary

      Required Elements 
      Modifier and Type Required Element Description
      String value
      The name of the channel (indicated in the @Outgoing annotation.
    • Element Detail

      • value

        String value
        The name of the channel (indicated in the @Outgoing annotation.
        the channel name, mandatory, non-null and non-blank. It must matches one of the available channels.