package org.frame.ehcache;

import java.lang.reflect.Method;
import java.util.List;

import net.sf.ehcache.Cache;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.aop.AfterReturningAdvice;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.util.Assert;

/**
* @Description : 描述
* @author liuq
*/
public class MethodCacheAfterAdvice implements AfterReturningAdvice,InitializingBean {
	
	private static final Log logger = LogFactory.getLog(MethodCacheAfterAdvice.class);

	private Cache cache;

	public void setCache(Cache cache) {
		this.cache = cache;
	}

	public MethodCacheAfterAdvice() {
		super();
	}

	@SuppressWarnings({ "unchecked"})
	public void afterReturning(Object arg0, Method arg1, Object[] arg2,Object arg3) throws Throwable {
		String className = arg3.getClass().getName();
		List list = cache.getKeys();
		for (int i = 0; i < list.size(); i++){
			String cacheKey = String.valueOf(list.get(i));
			if (cacheKey.startsWith(className)) {
				cache.remove(cacheKey);
				logger.debug("remove cache " + cacheKey);
			}
		}
	}

	public void afterPropertiesSet() throws Exception {
		Assert.notNull(cache,"Need a cache. Please use setCache(Cache) create it.");
	}

}