org.apache.juneau.BeanProxyInvocationHandler Maven / Gradle / Ivy
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// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance *
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// * *
// * http://www.apache.org/licenses/LICENSE-2.0 *
// * *
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package org.apache.juneau;
import java.lang.reflect.*;
import java.util.*;
import org.apache.juneau.json.*;
/**
* Provides an {@link InvocationHandler} for creating beans from bean interfaces.
*
*
* If the {@code useInterfaceProxies} setting is enabled in {@link BeanContext}, this is the class that creates
* instances of beans from interfaces.
*
* @param The interface class
*/
public class BeanProxyInvocationHandler implements InvocationHandler {
private final BeanMeta meta; // The BeanMeta for this instance
private Map beanProps; // The map of property names to bean property values.
/**
* Constructs with the specified {@link BeanMeta}.
*
* @param meta The bean meta data.
*/
public BeanProxyInvocationHandler(BeanMeta meta) {
this.meta = meta;
this.beanProps = new HashMap();
}
/**
* Implemented to handle the method called.
*/
@Override /* InvocationHandler */
public Object invoke(Object proxy, Method method, Object[] args) {
Class[] paramTypes = method.getParameterTypes();
if (method.getName().equals("equals") && (paramTypes.length == 1) && (paramTypes[0] == java.lang.Object.class)) {
Object arg = args[0];
if (arg == null)
return false;
if (proxy == arg)
return true;
if (proxy.getClass() == arg.getClass()) {
InvocationHandler ih = Proxy.getInvocationHandler(arg);
if (ih instanceof BeanProxyInvocationHandler) {
return this.beanProps.equals(((BeanProxyInvocationHandler)ih).beanProps);
}
}
BeanMap