io.dyn.core.context.EventedProxyFactoryBean.java Source code

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Here is the source code for io.dyn.core.context.EventedProxyFactoryBean.java

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/*
 * Copyright (c) 2011-2012 by the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package io.dyn.core.context;

import java.lang.reflect.Proxy;

import io.dyn.core.EventedBase;
import io.dyn.core.EventedProxy;
import org.springframework.beans.factory.FactoryBean;

/**
 * @author Jon Brisbin <jon@jbrisbin.com>
 */
public class EventedProxyFactoryBean<P> implements FactoryBean<P> {

    private EventedBase evented;
    private Class<? extends P> eventProxyType;

    public <T extends EventedBase<? super T>> EventedProxyFactoryBean(T evented) {
        this.evented = evented;
    }

    public Class<? extends P> getEventProxyType() {
        return eventProxyType;
    }

    public EventedProxyFactoryBean<P> setEventProxyType(Class<? extends P> eventProxyType) {
        this.eventProxyType = eventProxyType;
        return this;
    }

    @SuppressWarnings({ "unchecked" })
    @Override
    public P getObject() throws Exception {
        return (P) Proxy.newProxyInstance(eventProxyType.getClassLoader(), new Class<?>[] { eventProxyType },
                evented.invocationHandler());
    }

    @Override
    public Class<?> getObjectType() {
        return (null != eventProxyType ? eventProxyType : EventedProxy.class);
    }

    @Override
    public boolean isSingleton() {
        return true;
    }

}