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/**
 * Copyright (c) 2014-2015, biezhi 王爵 ([email protected])
 *
 * 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 org.unique.aop;

import java.util.Arrays;
import java.util.List;

/**
 * 单例的代理工厂
 * @author biezhi
 * @since 1.0
 */
public class ProxyBeanFactory {

	private ProxyBeanFactory() {
	}
	
	public static ProxyBeanFactory single() {
		return SingleHoder.single;
	}

	private static class SingleHoder {

		private static final ProxyBeanFactory single = new ProxyBeanFactory();
	}
	
	/**
	 * 
	 * @param targetClazz 创建指定类target实例
	 * @param chain 系统的拦截器链
	 * @return
	 */
	public Object newProxy(Class targetClazz, List chain) {
		Object proxyBean = null;
		try {
			Object target = targetClazz.newInstance();
			proxyBean = new DefaultProxy(target, chain).getProxy();
		} catch (InstantiationException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		}
		return proxyBean;
	}
	
	public Object newProxy(Class targetClazz, AbstractMethodInterceptor ... chain) {
		Object proxyBean = null;
		try {
			Object target = targetClazz.newInstance();
			List chainList = null;
			if(null != chain && chain.length > 0){
				chainList = Arrays.asList(chain);
			}
			proxyBean = new DefaultProxy(target, chainList).getProxy();
		} catch (InstantiationException e) {
			e.printStackTrace();
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		}
		return proxyBean;
	}

	public Object newProxy(Object target,  AbstractMethodInterceptor ... chain) {
		List chainList = null;
		if(null != chain && chain.length > 0){
			chainList = Arrays.asList(chain);
		}
		Object proxyBean = new DefaultProxy(target, chainList).getProxy();
		return proxyBean;
	}
	
	public Object newProxy(Object target, List chain) {
		Object proxyBean = new DefaultProxy(target, chain).getProxy();
		return proxyBean;
	}
}