org.openspaces.remoting

Interface RemoteResultReducer<T,Y>

public interface RemoteResultReducer<T,Y>

A remoting result reducer (ala Map Reduce) used when working with ExecutorSpaceRemotingProxyFactoryBean in broadcast mode in order to reduce the broadcast results into a "client side" result value.

Author:

kimchy

Method Summary

Modifier and Type	Method and Description
T	reduce(SpaceRemotingResult<Y>[] results, SpaceRemotingInvocation remotingInvocation) Reduces a list of Space remoting invocation results to an Object value.

Method Detail

reduce

T reduce(SpaceRemotingResult<Y>[] results,
         SpaceRemotingInvocation remotingInvocation)
  throws Exception

Reduces a list of Space remoting invocation results to an Object value. Can use the provided remote invocation to perform different reduce operations, for example based on the SpaceRemotingInvocation.getMethodName().

An exception thrown from the reduce operation will be propagated to the client.

Parameters:

results - A list of results from (usually) broadcast sync remote invocation.

remotingInvocation - The remote invocation

Returns:

A reduced return value (to the calling client)

Throws:

Exception - An exception that will be propagated to the client