Package org.jgroups
Interface MessageListener
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- 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.
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Method Summary
All Methods Instance Methods Abstract Methods 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.
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Method Detail
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receive
void receive(Message msg)
Called when a message is received.- Parameters:
msg
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getState
byte[] getState()
Answers the group state; e.g., when joining.- Returns:
- byte[]
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setState
void setState(byte[] state)
Sets the group state; e.g., when joining.- Parameters:
state
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