org.apache.activemq.broker.region.policy

Interface DispatchPolicy

All Known Implementing Classes:

PriorityDispatchPolicy, PriorityNetworkDispatchPolicy, RoundRobinDispatchPolicy, SimpleDispatchPolicy, StrictOrderDispatchPolicy

public interface DispatchPolicy

Abstraction to allow different dispatching policies to be plugged into the topic region implementations. This is used by a topic to deliver messages to the matching subscriptions.

Method Summary

Modifier and Type	Method and Description
boolean	dispatch(MessageReference node, MessageEvaluationContext msgContext, List<Subscription> consumers) Decides how to dispatch a selected message to a collection of consumers.

Method Detail

dispatch

boolean dispatch(MessageReference node,
                 MessageEvaluationContext msgContext,
                 List<Subscription> consumers)
          throws Exception

Decides how to dispatch a selected message to a collection of consumers. A safe approach is to dispatch to every subscription that matches. The list will be safe to iterate over when this method is called

Returns:

true if at least one consumer was dispatched or false if there are no active subscriptions that could be dispatched

Throws:

Exception