donaldp 2002/11/08 20:01:38
Added: fortress/src/java/org/apache/excalibur/fortress/handler
PassThroughInvocationHandler.java
Log:
Add in simple PassThrough InvocationHandler
Revision Changes Path
1.1
jakarta-avalon-excalibur/fortress/src/java/org/apache/excalibur/fortress/handler/PassThroughInvocationHandler.java
Index: PassThroughInvocationHandler.java
===================================================================
/*
* Copyright (C) The Apache Software Foundation. All rights reserved.
*
* This software is published under the terms of the Apache Software License
* version 1.1, a copy of which has been included with this distribution in
* the LICENSE.txt file.
*/
package org.apache.excalibur.fortress.handler;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
/**
* InvocationHandler that just passes on all methods to target object.
*
* @author <a href="mailto:peter at apache.org">Peter Donald</a>
*/
final class PassThroughInvocationHandler
implements InvocationHandler
{
private final Object m_object;
/**
* Create an Invocation handler for specified object.
*
* @param object the object to delegate to
*/
public PassThroughInvocationHandler( final Object object )
{
if( null == object )
{
throw new NullPointerException( "object" );
}
m_object = object;
}
/**
* Invoke the appropriate method on underlying object.
*
* @param proxy the proxy object
* @param meth the method
* @param args the arguments
* @return the return value of object
* @throws Throwable method throws an exception
*/
public Object invoke( final Object proxy,
final Method meth,
final Object[] args )
throws Throwable
{
try
{
return meth.invoke( m_object, args );
}
catch( final InvocationTargetException ite )
{
throw ite.getTargetException();
}
}
/**
* Retrieve the underlying object delegated to.
*
* @return the object delegated to
*/
Object getObject()
{
return m_object;
}
}
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