Interface Subscriber<V>

Type Parameters:
V - The value that will be received
All Known Subinterfaces:
Processor<I,​O>, Processor.Iso<V>, Processor.Transactional<I,​O>, Processor.TransactionalIso<V>, TransactionalSubscriber<V>
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface Subscriber<V>
A listener to events that may be called by an Publisher.

For every publisher this subscriber is subscribed to, the subscriber will only process one event at a time -- effectively, within a single publisher this subscriber does not have to be aware of concurrent effects

  • Method Summary

    Modifier and Type Method Description
    default void onClose()
    When the Publisher this is subscribed to closes without error, this method will be called.
    default void onError​(Throwable e)
    When an error occurs while subscribing to an Publisher, or is thrown during the execution of submit(Object) that is not otherwise handled, this method will be called with the error.
    void submit​(V item)
    Called to submit a new item
  • Method Details

    • submit

      void submit​(V item)
      Called to submit a new item
      Parameters:
      item - The item available
    • onError

      default void onError​(Throwable e)
      When an error occurs while subscribing to an Publisher, or is thrown during the execution of submit(Object) that is not otherwise handled, this method will be called with the error. The associated Publisher will not send further update signals after an error is thrown.
      Parameters:
      e - The exception thrown
    • onClose

      default void onClose()
      When the Publisher this is subscribed to closes without error, this method will be called.