org.cometd.annotation

Annotation Type Param

@Target(value=PARAMETER)
@Retention(value=RUNTIME)
@Documented
public @interface Param

For methods annotated with Listener or Subscription whose value is a channel template such as /game/{gameId}, this annotation binds parameters of those methods with the value obtained matching the actual channel with the channel template.

For example:

 @Service
 public class GameService
 {
     @Listener("/game/{gameId}")
     public void handleGame(ServerSession remote, ServerMessage.Mutable message, @Param("gameId") String gameId)
     {
         // Use the 'gameId' parameter here.
     }
 }
 

The variable name defined in the Listener or Subscription annotation must be the same defined by the Param annotation.

Required Element Summary

Required Elements

Modifier and Type	Required Element and Description
String	value

Element Detail

value

public abstract String value

Returns:

the variable name that identifies the parameter annotated with this annotation