oscachecache.java

xwiki 源码

/**
 * ===================================================================
 *
 * Copyright (c) 2003,2004 Ludovic Dubost, All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details, published at 
 * http://www.gnu.org/copyleft/lesser.html or in lesser.txt in the
 * root folder of this distribution.

 * Created by
 * User: Ludovic Dubost
 * Date: 4 avr. 2005
 * Time: 00:57:57
 */
package com.xpn.xwiki.cache.impl;

import com.xpn.xwiki.cache.api.XWikiCache;
import com.xpn.xwiki.cache.api.XWikiCacheNeedsRefreshException;
import com.opensymphony.oscache.base.Cache;
import com.opensymphony.oscache.base.NeedsRefreshException;
import com.opensymphony.oscache.base.EntryRefreshPolicy;

import java.util.Date;

public class OSCacheCache implements XWikiCache {
    private Cache cache;

    public OSCacheCache() {
       cache = new Cache(true, false);
    }

    public OSCacheCache(int capacity) {
       cache = new Cache(true, false, false, null, capacity);
    }

    public void setCapacity(int capacity) {
     cache.setCapacity(capacity);
    }

    public void flushEntry(String key) {
     cache.flushEntry(key);
    }

    public void putInCache(String key, Object obj) {
     cache.putInCache(key, obj);
    }

    public void putInCache(String key, Object obj, EntryRefreshPolicy expiry) {
     cache.putInCache(key, obj, expiry);
    }

    public Object getFromCache(String key) throws XWikiCacheNeedsRefreshException {
        try {
         return cache.getFromCache(key);
        } catch (NeedsRefreshException e) {
            throw new XWikiCacheNeedsRefreshException(e);
        }
    }

    public Object getFromCache(String key, int refeshPeriod) throws XWikiCacheNeedsRefreshException {
        try {
         return cache.getFromCache(key, refeshPeriod);
        } catch (NeedsRefreshException e) {
            throw new XWikiCacheNeedsRefreshException(e);
        }
    }

    public void cancelUpdate(String key) {
        cache.cancelUpdate(key);
    }

    public void flushAll() {
        cache.flushAll(new Date());
    }
}