org.fabric3.implementation.bytecode.proxy.wire

Class CallbackDispatcher

java.lang.Object

org.fabric3.implementation.bytecode.proxy.wire.AbstractCallbackDispatcher

org.fabric3.implementation.bytecode.proxy.wire.CallbackDispatcher

All Implemented Interfaces:

ProxyDispatcher

public class CallbackDispatcher
extends AbstractCallbackDispatcher

Responsible for dispatching to a callback invocation from multi-threaded component instances such as composite scope components.

Since callback proxies for multi-threaded components may dispatch to multiple callback services, this implementation must determine the correct target service based on the current callback reference. For example, if clients A and A' implementing the same callback interface C invoke B, the callback proxy representing C must correctly dispatch back to A and A'. This is done by recording the callback URI as the forward invoke is made.

Constructor Summary

Constructors

Constructor and Description
CallbackDispatcher()

Method Summary

Methods

Modifier and Type	Method and Description
Object	_f3_invoke(int i, Object args) Performs the dispatch by invoking a target associated with the invoked method index.
void	init(Map<String,org.fabric3.spi.wire.InvocationChain[]> mappings) In multi-threaded instances such as composite scoped components, multiple forward invocations may be received simultaneously.

Methods inherited from class org.fabric3.implementation.bytecode.proxy.wire.AbstractCallbackDispatcher

invoke

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CallbackDispatcher

public CallbackDispatcher()

Method Detail

init

public void init(Map<String,org.fabric3.spi.wire.InvocationChain[]> mappings)

In multi-threaded instances such as composite scoped components, multiple forward invocations may be received simultaneously. As a result, since callback proxies stored in instance variables may represent multiple clients, they must map the correct one for the request being processed on the current thread. The mappings parameter keys a callback URI representing the client to the set of invocation chains for the callback service.

Parameters:

mappings - the callback URI to invocation chain mappings

_f3_invoke

public Object _f3_invoke(int i,
                Object args)
                  throws Throwable

Description copied from interface: ProxyDispatcher

Performs the dispatch by invoking a target associated with the invoked method index.

Parameters:

i - the method index

args - invocation parameter(s) or null

Returns:

a return value

Throws:

Throwable - if there is an error during invocation