Package org.jgroups.blocks

Interface Response

All Known Implementing Classes:
RequestCorrelator.ResponseImpl
public interface Response
A handback object shipped as a parameter to RequestHandler.handle(Message,Response). Encapsulates information needed to send a response, e.g. the request ID, the sender etc.
Since:
3.3

  • Method Details

    • send

      void send(Object reply, boolean is_exception)
      Sends a response, usually called from a thread spawned by RequestHandler.handle(Message,Response)
      Parameters:
      reply - The reply to be sent back, ie. as result to a synchronous RPC. Can be null, e.g. when the method has a void return type.
      is_exception - If RequestHandler.handle(Message,Response) threw an exception, it must be caught, returned as the reply and is_exception must be true. If reply is a regular object, is_exception is false

    • send

      void send(Message reply, boolean is_exception)
      Similar to send(Object,boolean), but passes a message instead of an object. The message needs to contain the marshalled response, so message creation, setting of flags and marshalling is the responsibility of the caller.

      The reason for this additional method is to give the caller more control over the response message.

      This method may be removed, should we find that it's not really needed

      Parameters:
      reply - The reply message
      is_exception - Whether the payload of this message is an exception or a real reply object