Package org.jgroups

Interface MessageListener

All Known Subinterfaces:
ExtendedMessageListener, ExtendedReceiver, Receiver
All Known Implementing Classes:
Chat, ChatCore, DistributedHashtable, DistributedQueue, DistributedTree, Draw, ExtendedReceiverAdapter, MessageListenerAdapter, NotificationBus, QuoteServer, ReceiverAdapter, ReplicatedHashMap, ReplicatedHashtable, ReplicatedTree, ViewDemo, VotingAdapter, Whiteboard
public interface MessageListener
Allows a listener to be notified when a message arrives. Contrary to the pull-style of channels, some building blocks (e.g., PullPushAdapter) provide an event-like, push-style message delivery model. In this case, the entity to be notified of message reception needs to provide a callback to be invoked whenever a message has been received. The MessageListener interface provides a method to do so.

  • Method Summary

    Modifier and Type
    Method
    Description
    byte[]
    getState()
    Answers the group state; e.g., when joining.
    void
    receive(Message msg)
    Called when a message is received.
    void
    setState(byte[] state)
    Sets the group state; e.g., when joining.

  • Method Details

    • receive

      void receive(Message msg)
      Called when a message is received.
      Parameters:
      msg -

    • getState

      byte[] getState()
      Answers the group state; e.g., when joining.
      Returns:
      byte[]

    • setState

      void setState(byte[] state)
      Sets the group state; e.g., when joining.
      Parameters:
      state -