BayeuxServer.SubscriptionListener (CometD :: Java 6.0.19 API)

All Superinterfaces:

Bayeux.BayeuxListener, BayeuxServer.BayeuxServerListener, java.util.EventListener

Enclosing interface:

BayeuxServer
```
public static interface BayeuxServer.SubscriptionListener
extends BayeuxServer.BayeuxServerListener
```
Specialized listener for ServerChannel subscription events.

This listener is called when a subscribe message or an unsubscribe message occurs for any channel known to the BayeuxServer.

This interface the correspondent of the ServerChannel.SubscriptionListener interface, but it is invoked for any session and any channel known to the BayeuxServer, after having invoked the ServerChannel.SubscriptionListener.

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default void`	`subscribed(ServerSession session, ServerChannel channel, ServerMessage message)`	Callback invoked when a `ServerSession` subscribes to a `ServerChannel`.
`default void`	`unsubscribed(ServerSession session, ServerChannel channel, ServerMessage message)`	Callback invoked when a `ServerSession` unsubscribes from a `ServerChannel`.

- Method Detail
  - subscribed
```
default void subscribed(ServerSession session,
                        ServerChannel channel,
                        ServerMessage message)
```
    Callback invoked when a ServerSession subscribes to a ServerChannel.
    
    Parameters:
    
    session - the session that subscribes
    
    channel - the channel to subscribe to
    
    message - the subscription message sent by the client, or null in case of server-side subscription via ServerChannel.subscribe(ServerSession)
  - unsubscribed
```
default void unsubscribed(ServerSession session,
                          ServerChannel channel,
                          ServerMessage message)
```
    Callback invoked when a ServerSession unsubscribes from a ServerChannel.
    
    Parameters:
    
    session - the session that unsubscribes
    
    channel - the channel to unsubscribe from
    
    message - the unsubscription message sent by the client, or null in case of server-side unsubscription via ServerChannel.unsubscribe(ServerSession)