org.joe_e.reflect
Class Proxies

java.lang.Object
  org.joe_e.reflect.Proxies

public final class Proxies
extends java.lang.Object

The dynamic proxy interface. This is a wrapper around Java's dynamic proxy features provided by java.lang.reflect.Proxy.

Method Summary

static java.lang.reflect.InvocationHandler	getHandler(java.lang.reflect.Proxy proxy) Extract the InvocationHandler from a Proxy
static boolean	isImplementable(java.lang.Class<?> type) Returns true if the argument is an interface that can be implemented by a Proxy using proxy().
static java.lang.Object	proxy(java.lang.reflect.InvocationHandler handler, java.lang.Class<?>... interfaces) Constructs a dynamic proxy.

Methods inherited from class java.lang.Object

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

Method Detail

getHandler

public static java.lang.reflect.InvocationHandler getHandler(java.lang.reflect.Proxy proxy)

Extract the InvocationHandler from a Proxy

Parameters:

proxy - proxy instance

Returns:

the invocation handler for the proxy

proxy

public static java.lang.Object proxy(java.lang.reflect.InvocationHandler handler,
                                     java.lang.Class<?>... interfaces)
                              throws java.lang.ClassCastException

Constructs a dynamic proxy.

Parameters:

handler - invocation handler

interfaces - each implemented interface

Returns:

dynamic proxy

Throws:

java.lang.ClassCastException - a restriction on the types is violated

java.lang.NullPointerException - an argument is null

isImplementable

public static boolean isImplementable(java.lang.Class<?> type)

Returns true if the argument is an interface that can be implemented by a Proxy using proxy().

Parameters:

type - candidate interface

Returns:

true if a Joe-E type, else false