org.apache.commons.proxy.invoker
Class NullInvoker

java.lang.Object
  org.apache.commons.proxy.invoker.NullInvoker

All Implemented Interfaces:

Invoker

public class NullInvoker
extends Object
implements Invoker

An Invoker implementation which merely returns null for all method invocations. This class is useful for scenarios where the "null object" design pattern is needed.

Since:

1.0

Author:

James Carman

Constructor Summary

NullInvoker()

Method Summary

Object

invoke(Object proxy, Method method, Object[] args) "Invokes" the method.

Methods inherited from class java.lang.Object

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

Constructor Detail

NullInvoker

public NullInvoker()

Method Detail

invoke

public Object invoke(Object proxy,
                     Method method,
                     Object[] args)
              throws Throwable

Description copied from interface: Invoker

"Invokes" the method. Implementation should throw a InvokerException if problems arise while trying to invoke the method.

Specified by:

invoke in interface Invoker

Parameters:

proxy - the proxy object

method - the method being invoked

args - the arguments

Returns:

the return value

Throws:

Throwable - thrown by the implementation