org.jgroups.blocks
Class PullPushAdapter

java.lang.Object
  org.jgroups.ChannelListenerAdapter
      org.jgroups.blocks.PullPushAdapter

All Implemented Interfaces:

java.lang.Runnable, ChannelListener

Deprecated. Use Receiver instead, this class will be removed in JGroups 3.0

public class PullPushAdapter
extends ChannelListenerAdapter
implements java.lang.Runnable

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

Nested Class Summary

static class

PullPushAdapter.PullHeader Deprecated.

Field Summary

protected MessageListener	listener Deprecated.
protected java.util.HashMap	listeners Deprecated.
protected Log	log Deprecated.
protected java.util.List	membership_listeners Deprecated.
protected java.lang.Thread	receiver_thread Deprecated.
protected Transport	transport Deprecated.

Constructor Summary

PullPushAdapter(Transport transport)
Deprecated.

PullPushAdapter(Transport transport, MembershipListener ml)
Deprecated.

PullPushAdapter(Transport transport, MessageListener l)
Deprecated.

PullPushAdapter(Transport transport, MessageListener l, MembershipListener ml)
Deprecated.

PullPushAdapter(Transport transport, MessageListener l, MembershipListener ml, boolean start)
Deprecated.

Method Summary

void	addMembershipListener(MembershipListener l) Deprecated.
void	channelClosed(Channel channel) Deprecated.
void	channelConnected(Channel channel) Deprecated.
void	channelDisconnected(Channel channel) Deprecated.
MessageListener	getListener() Deprecated.
Transport	getTransport() Deprecated.
protected void	handleMessage(Message msg) Deprecated. Check whether the message has an identifier.
protected void	notifyBlock() Deprecated.
protected void	notifySuspect(Address suspected_mbr) Deprecated.
protected void	notifyUnblock() Deprecated.
protected void	notifyViewChange(View v) Deprecated.
void	registerListener(java.io.Serializable identifier, MessageListener l) Deprecated. Sets a listener to messages with a given identifier.
void	removeMembershipListener(MembershipListener l) Deprecated.
void	run() Deprecated. Reentrant run(): message reception is serialized, then the listener is notified of the message reception
void	send(Message msg) Deprecated. Sends a message with no identifier; listener member will get this message on the other group members.
void	send(java.io.Serializable identifier, Message msg) Deprecated. Sends a message to the group - listeners to this identifier will receive the messages.
void	setListener(MessageListener l) Deprecated.
void	setMembershipListener(MembershipListener ml) Deprecated. Use addMembershipListener(org.jgroups.MembershipListener)
void	start() Deprecated.
void	stop() Deprecated.
void	unregisterListener(java.io.Serializable identifier) Deprecated. Removes a message listener to a given identifier from the message listeners map.

Methods inherited from class org.jgroups.ChannelListenerAdapter

channelReconnected, channelShunned

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

transport

protected Transport transport

Deprecated.

listener

protected MessageListener listener

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 Log log

Deprecated.

Constructor Detail

PullPushAdapter

public PullPushAdapter(Transport transport)

Deprecated.

PullPushAdapter

public PullPushAdapter(Transport transport,
                       MessageListener l)

Deprecated.

PullPushAdapter

public PullPushAdapter(Transport transport,
                       MembershipListener ml)

Deprecated.

PullPushAdapter

public PullPushAdapter(Transport transport,
                       MessageListener l,
                       MembershipListener ml)

Deprecated.

PullPushAdapter

public PullPushAdapter(Transport transport,
                       MessageListener l,
                       MembershipListener ml,
                       boolean start)

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

setMembershipListener

public void setMembershipListener(MembershipListener ml)

Deprecated. Use addMembershipListener(org.jgroups.MembershipListener)

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.

channelConnected

public void channelConnected(Channel channel)

Deprecated.

Specified by:

channelConnected in interface ChannelListener

Overrides:

channelConnected in class ChannelListenerAdapter

channelDisconnected

public void channelDisconnected(Channel channel)

Deprecated.

Specified by:

channelDisconnected in interface ChannelListener

Overrides:

channelDisconnected in class ChannelListenerAdapter

channelClosed

public void channelClosed(Channel channel)

Deprecated.

Specified by:

channelClosed in interface ChannelListener

Overrides:

channelClosed in class ChannelListenerAdapter

getListener

public MessageListener getListener()

Deprecated.

Returns:

Returns the listener.