Package ball.lang.reflect

Class InterceptingInvocationHandler<T>

java.lang.Object

ball.lang.reflect.DefaultInvocationHandler

ball.lang.reflect.InterceptingInvocationHandler<T>

Type Parameters:

T - The type of the "wrapped" target.

Bean Property Summary

Name	Mode	Type	isHidden	isBound	isConstrained
target	R	T	false	false	false

All Implemented Interfaces:

DefaultInterfaceMethodInvocationHandler, InvocationHandler

public class InterceptingInvocationHandler<T>
extends DefaultInvocationHandler

"Intercepting" InvocationHandler implementation.

Author:

Allen D. Ball

Constructor Summary

Constructors

Constructor	Description
InterceptingInvocationHandler()

Method Summary

Modifier and Type	Method	Description
Object	invoke(Object proxy, Method method, Object[] argv)	Subclasses may declare methods with the same signature of a proxied interface method which will be invoked (as a sort of listener) before invoking the target method.

Methods inherited from class ball.lang.reflect.DefaultInvocationHandler

getImplementedInterfacesOf, getProxyClass, newProxyInstance

Methods inherited from class java.lang.Object

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

Constructor Detail

InterceptingInvocationHandler

public InterceptingInvocationHandler()

Method Detail

invoke

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

Subclasses may declare methods with the same signature of a proxied interface method which will be invoked (as a sort of listener) before invoking the target method. If the invoked Method's declaring class is assignable from the target's class, the Method is invoked on the target.

Specified by:

invoke in interface DefaultInterfaceMethodInvocationHandler

Specified by:

invoke in interface InvocationHandler

Overrides:

invoke in class DefaultInvocationHandler

Parameters:

proxy - The proxy instance.

method - The Method.

argv - The argument array.

Returns:

The value to return from the Method invocation.

Throws:

Exception - If the Method cannot be invoked.

Throwable