spin
Class ProxyFactory

java.lang.Object
  spin.ProxyFactory

Direct Known Subclasses:

CGLibProxyFactory, JDKProxyFactory

public abstract class ProxyFactory
extends java.lang.Object

A factory of proxies which intercept invocations, using Evaluators to evaluate them.

See Also:

Evaluator

Constructor Summary

ProxyFactory()

Method Summary

protected abstract boolean	areProxyEqual(java.lang.Object proxy1, java.lang.Object proxy2) Test if the given proxies of this factory are intercepting the same object.
abstract java.lang.Object	createProxy(java.lang.Object object, Evaluator evaluator) Create a proxy for the given object that evaluates invocations with the given evaluator.
protected java.lang.Object	evaluteInvocation(Evaluator evaluator, java.lang.Object proxy, Invocation invocation) Evaluate the given invocation with the given evaluator.
abstract boolean	isProxy(java.lang.Object object) Test if the given object is a proxy created by this factory.

Methods inherited from class java.lang.Object

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

Constructor Detail

ProxyFactory

public ProxyFactory()

Method Detail

createProxy

public abstract java.lang.Object createProxy(java.lang.Object object,
                                             Evaluator evaluator)

Create a proxy for the given object that evaluates invocations with the given evaluator.

Parameters:

object - object to create proxy for

evaluator - evaluator to evaluate invocations with

Returns:

new proxy

isProxy

public abstract boolean isProxy(java.lang.Object object)

Test if the given object is a proxy created by this factory.

Parameters:

object - object to test

Returns:

true if given object is a Spin proxy, false otherwise

areProxyEqual

protected abstract boolean areProxyEqual(java.lang.Object proxy1,
                                         java.lang.Object proxy2)

Test if the given proxies of this factory are intercepting the same object.

Parameters:

proxy1 - first proxy

proxy2 - second proxy

Returns:

true if both proxies are intercepting the same object

evaluteInvocation

protected java.lang.Object evaluteInvocation(Evaluator evaluator,
                                             java.lang.Object proxy,
                                             Invocation invocation)
                                      throws java.lang.Throwable

Evaluate the given invocation with the given evaluator.

Parameters:

evaluator - evaluator to evaluate with

proxy - proxy that intcepted the invocation

invocation - the invocation to evaluate

Returns:

result of evaluation

Throws:

java.lang.Throwable