Class PullPushAdapter

  • All Implemented Interfaces:
    java.lang.Runnable, ChannelListener

    public class PullPushAdapter
    extends java.lang.Object
    implements java.lang.Runnable, ChannelListener
    Deprecated.
    Use Receiver instead, this class will be removed in JGroups 3.0
    Allows a client of Channel to be notified when messages have been received instead of having to actively poll the channel for new messages. Typically used in the client role (receive()). As this class does not implement interface Transport, but uses it for receiving messages, an underlying object has to be used to send messages (e.g. the channel on which an object of this class relies).

    Multiple MembershipListeners can register with the PullPushAdapter; when a view is received, they will all be notified. There is one main message listener which sends and receives message. In addition, MessageListeners can register with a certain tag (identifier), and then send messages tagged with this identifier. When a message with such an identifier is received, the corresponding MessageListener will be looked up and the message dispatched to it. If no tag is found (default), the main MessageListener will receive the message.

    Version:
    $Revision
    Author:
    Bela Ban
    • Field Detail

      • transport

        protected Transport transport
        Deprecated.
      • membership_listeners

        protected final java.util.List membership_listeners
        Deprecated.
      • receiver_thread

        protected java.lang.Thread receiver_thread
        Deprecated.
      • listeners

        protected final java.util.HashMap listeners
        Deprecated.
      • log

        protected final org.apache.commons.logging.Log log
        Deprecated.
    • Method Detail

      • getTransport

        public Transport getTransport()
        Deprecated.
      • start

        public final void start()
        Deprecated.
      • stop

        public void stop()
        Deprecated.
      • send

        public void send​(java.io.Serializable identifier,
                         Message msg)
                  throws java.lang.Exception
        Deprecated.
        Sends a message to the group - listeners to this identifier will receive the messages.
        Parameters:
        identifier - the key that the proper listeners are listenting on
        msg - the Message to be sent
        Throws:
        java.lang.Exception
        See Also:
        registerListener(java.io.Serializable, org.jgroups.MessageListener)
      • send

        public void send​(Message msg)
                  throws java.lang.Exception
        Deprecated.
        Sends a message with no identifier; listener member will get this message on the other group members.
        Parameters:
        msg - the Message to be sent
        Throws:
        java.lang.Exception
      • setListener

        public final void setListener​(MessageListener l)
        Deprecated.
      • registerListener

        public void registerListener​(java.io.Serializable identifier,
                                     MessageListener l)
        Deprecated.
        Sets a listener to messages with a given identifier. Messages sent with this identifier in their headers will be routed to this listener. Note: there can be only one listener for one identifier; if you want to register a different listener to an already registered identifier, then unregister first.
        Parameters:
        identifier - - messages sent on the group with this object will be received by this listener
        l - - the listener that will get the message
      • unregisterListener

        public void unregisterListener​(java.io.Serializable identifier)
        Deprecated.
        Removes a message listener to a given identifier from the message listeners map.
        Parameters:
        identifier - - the key to whom we do not want to listen any more
      • addMembershipListener

        public final void addMembershipListener​(MembershipListener l)
        Deprecated.
      • removeMembershipListener

        public void removeMembershipListener​(MembershipListener l)
        Deprecated.
      • run

        public void run()
        Deprecated.
        Reentrant run(): message reception is serialized, then the listener is notified of the message reception
        Specified by:
        run in interface java.lang.Runnable
      • handleMessage

        protected void handleMessage​(Message msg)
        Deprecated.
        Check whether the message has an identifier. If yes, lookup the MessageListener associated with the given identifier in the hashtable and dispatch to it. Otherwise just use the main (default) message listener
      • notifyViewChange

        protected void notifyViewChange​(View v)
        Deprecated.
      • notifySuspect

        protected void notifySuspect​(Address suspected_mbr)
        Deprecated.
      • notifyBlock

        protected void notifyBlock()
        Deprecated.
      • notifyUnblock

        protected void notifyUnblock()
        Deprecated.
      • getListener

        public MessageListener getListener()
        Deprecated.
        Returns:
        Returns the listener.