package com.foxinmy.weixin4j.cache;
   
   import java.util.Map;
   import java.util.concurrent.ConcurrentHashMap;
   
   /**
    * 用内存保存缓存对象(不推荐使用)
    *
    * @className MemoryCacheStorager
   * @author jinyu(foxinmy@gmail.com)
   * @date 2016年1月24日
   * @since JDK 1.6
   * @see
   */
  public class MemoryCacheStorager<T extends Cacheable> implements
  		CacheStorager<T> {
  
  	private final Map<String, T> CONMAP;
  
  	public MemoryCacheStorager() {
  		this.CONMAP = new ConcurrentHashMap<String, T>();
  	}
  
  	@Override
  	public T lookup(String key) {
  		T cache = this.CONMAP.get(key);
  		if (cache != null) {
  			if ((cache.getCreateTime() + cache.getExpires() - CUTMS) > System
  					.currentTimeMillis()) {
  				return cache;
  			}
  		}
  		return null;
  	}
  
  	@Override
  	public void caching(String key, T cache) {
  		this.CONMAP.put(key, cache);
  	}
  
  	@Override
  	public T evict(String key) {
  		return this.CONMAP.remove(key);
  	}
  
  	@Override
  	public void clear() {
  		this.CONMAP.clear();
  	}
  }