Package org.perfectable.introspection.proxy

Class ForwardingHandler<T>

java.lang.Object

org.perfectable.introspection.proxy.ForwardingHandler<T>

Type Parameters:

T - type of objects handled

All Implemented Interfaces:

InvocationHandler<MethodInvocation<T>>

public final class ForwardingHandler<T>
extends Object
implements InvocationHandler<MethodInvocation<T>>

Invocation handler that delegates all calls to actual object.

This class is mutable, the target can be swapped while proxies are used.

Method Summary

Modifier and Type	Method	Description
Object	handle(MethodInvocation<T> invocation)	Catches invocation executed on proxy and returns result that should be passed to the client.
static <T> ForwardingHandler<T>	of(T target)	Creates handler with specified object as a delegate.
void	swap(T newTarget)	Changes target to provided one.

Methods inherited from class java.lang.Object

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

Method Detail

of

public static <T> ForwardingHandler<T> of(T target)

Creates handler with specified object as a delegate.

Type Parameters:

T - type of proxy/target

Parameters:

target - delegate target

Returns:

handler that forwards to target

swap

public void swap(T newTarget)

Changes target to provided one.

Parameters:

newTarget - new delegation target

handle

@Nullable
public Object handle(MethodInvocation<T> invocation)
              throws Throwable

Description copied from interface: InvocationHandler

Catches invocation executed on proxy and returns result that should be passed to the client.

Specified by:

handle in interface InvocationHandler<T>

Parameters:

invocation - invocation captured

Returns:

successful result of invocation processing

Throws:

Throwable - exception that will be thrown on the call site