org.openejb.util.proxy
Class ProxyManager

java.lang.Object
  org.openejb.util.proxy.ProxyManager

public class ProxyManager
extends Object

Author:

David Blevins, Richard Monson-Haefel, Aaron Mulder (ammulder@alumni.princeton.edu)

Constructor Summary

ProxyManager()

Method Summary

static void	checkDefaultFactory()
static ProxyFactory	getDefaultFactory()
static String	getDefaultFactoryName()
static ProxyFactory	getFactory(String factoryName)
static InvocationHandler	getInvocationHandler(Object proxy) Casts the object passed in to the appropriate proxy type and retreives the InvocationHandler assigned to it.
static Class	getProxyClass(Class interfaceType) Loads and returns the proxy implementation for the specified interface.
static Class	getProxyClass(Class[] interfaces)
static boolean	isProxyClass(Class cl)
static Object	newProxyInstance(Class proxyClass) Create a new proxy instance given a proxy class.
static Object	newProxyInstance(Class[] interfaces, InvocationHandler h)
static Object	newProxyInstance(Class interfaceType, InvocationHandler h) Throws a RuntimeException if there is a problem instantiating the new proxy instance.
static ProxyFactory	registerFactory(String factoryName, ProxyFactory factory)
static ProxyFactory	setDefaultFactory(String factoryName) Sets the default factory.
static Object	setInvocationHandler(Object proxy, InvocationHandler handler) Casts the object passed in to the appropriate proxy type and sets the InvocationHandler assigned to it.
static ProxyFactory	unregisterFactory(String factoryName)

Methods inherited from class java.lang.Object

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

Constructor Detail

ProxyManager

public ProxyManager()

Method Detail

registerFactory

public static ProxyFactory registerFactory(String factoryName,
                                           ProxyFactory factory)

unregisterFactory

public static ProxyFactory unregisterFactory(String factoryName)

checkDefaultFactory

public static void checkDefaultFactory()

getFactory

public static ProxyFactory getFactory(String factoryName)

setDefaultFactory

public static ProxyFactory setDefaultFactory(String factoryName)

Sets the default factory. The factory must already be registered.

Parameters:

factoryName -

getDefaultFactory

public static ProxyFactory getDefaultFactory()

getDefaultFactoryName

public static String getDefaultFactoryName()

getInvocationHandler

public static InvocationHandler getInvocationHandler(Object proxy)

Casts the object passed in to the appropriate proxy type and retreives the InvocationHandler assigned to it. Executes on the default ProxyFactory instance.

Parameters:

proxy - The Proxy object to retreive the InvocationHandler from.

Returns:

The implementation of InvocationHandler handling invocations on the specified Proxy object.

setInvocationHandler

public static Object setInvocationHandler(Object proxy,
                                          InvocationHandler handler)

Casts the object passed in to the appropriate proxy type and sets the InvocationHandler assigned to it.

Parameters:

proxy - The Proxy object to retreive the InvocationHandler from.

Returns:

The Proxy object with the new InvocationHandler.

getProxyClass

public static Class getProxyClass(Class interfaceType)
                           throws IllegalAccessException

Loads and returns the proxy implementation for the specified interface. The Class object is loaded using ProxyClassLoader.loadClass. If the class definition is not found, the findClass method will be called by the VM; at which point, the proxy class byte code will be generated by ProxyFactory and resolved by the VM.

Parameters:

interfaceType -

Returns:

Class

Throws:

IllegalAccessException

getProxyClass

public static Class getProxyClass(Class[] interfaces)
                           throws IllegalAccessException

Throws:

IllegalAccessException

newProxyInstance

public static Object newProxyInstance(Class interfaceType,
                                      InvocationHandler h)
                               throws IllegalAccessException

Throws a RuntimeException if there is a problem instantiating the new proxy instance.

Parameters:

interfaceType - A bean's home or remote interface that the Proxy object should implement.

h -

Returns:

Object

Throws:

IllegalAccessException

newProxyInstance

public static Object newProxyInstance(Class[] interfaces,
                                      InvocationHandler h)
                               throws IllegalAccessException

Throws:

IllegalAccessException

isProxyClass

public static boolean isProxyClass(Class cl)

Parameters:

cl -

Returns:

boolean

newProxyInstance

public static Object newProxyInstance(Class proxyClass)
                               throws IllegalAccessException

Create a new proxy instance given a proxy class.

Throws:

IllegalAccessException