ehcacheprovider.java

野蔷薇论坛源码 java 自己看看吧。 学习用

/* 
 * Created on 2007-5-1
 * Last modified on 2007-6-7
 * Powered by YeQiangWei.com
 */
package com.yeqiangwei.club.cache;

import org.apache.log4j.Logger;

import net.sf.ehcache.CacheManager;

public class EHCacheProvider implements CacheProvider{
	
	private static final Logger logger = Logger.getLogger(EHCacheProvider.class);
			
	private static CacheManager manager;

    public final Cache buildCache(String name) throws CacheException {
	    try {
	    	net.sf.ehcache.Cache cache = manager.getCache(name);
            if (cache == null) {
            	logger.warn("Could not find configuration [" + name + "]; using defaults.");
                manager.addCache(name);
                cache = manager.getCache(name);
                logger.debug("=========================");
                logger.debug("started EHCache region:" + name);
                logger.debug("=========================");
                logger.debug("                          ");
            }
            return new EHCache(cache);
	    }
        catch (net.sf.ehcache.CacheException e) {
            throw new CacheException(e);
        }
    }
    
	public String[] getCacheNames() {
		return manager.getCacheNames();
	}

	public Cache getCache(String name) {
		return CacheFactory.creator(name);
	}

	public boolean isMinimalPutsEnabledByDefault() {
		return false;
	}

	public final void start() throws CacheException {
		if (manager != null) {
            logger.debug("EhCacheProvider already started.");
            return;
        }else{
        	/*
        	logger.debug("=========================");
        	logger.debug("EhCacheProvider starting.");
        	logger.debug("=========================");
        	*/
        	manager = new CacheManager();
        }
	}

    /**
     * Returns the next timestamp.
     */
    public long nextTimestamp() {
        return Timestamper.next();
    }

	public final void stop() {
		if (manager != null) {
            manager.shutdown();
            manager = null;
        }
	}


}