com.mchange.v1.cachedstore.NoCacheCachedStore Maven / Gradle / Ivy

Go to download
/*
 * Distributed as part of mchange-commons-java 0.2.6.1
 *
 * Copyright (C) 2013 Machinery For Change, Inc.
 *
 * Author: Steve Waldman 
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of EITHER:
 *
 *     1) The GNU Lesser General Public License (LGPL), version 2.1, as 
 *        published by the Free Software Foundation
 *
 * OR
 *
 *     2) The Eclipse Public License (EPL), version 1.0
 *
 * You may choose which license to accept if you wish to redistribute
 * or modify this work. You may offer derivatives of this work
 * under the license you have chosen, or you may provide the same
 * choice of license which you have been offered here.
 *
 * This software 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.
 *
 * You should have received copies of both LGPL v2.1 and EPL v1.0
 * along with this software; see the files LICENSE-EPL and LICENSE-LGPL.
 * If not, the text of these licenses are currently available at
 *
 * LGPL v2.1: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 *  EPL v1.0: http://www.eclipse.org/org/documents/epl-v10.php 
 * 
 */

package com.mchange.v1.cachedstore;

import java.util.Collections;
import java.util.Iterator;
import com.mchange.v1.util.IteratorUtils;

class NoCacheCachedStore implements TweakableCachedStore
{
    CachedStore.Manager mgr;

    NoCacheCachedStore(CachedStore.Manager mgr)
    { this.mgr = mgr; }

    public Object find(Object key) throws CachedStoreException
    { 
	try {return mgr.recreateFromKey( key ); }
	catch (Exception e)
	    {
		e.printStackTrace();
		throw CachedStoreUtils.toCachedStoreException( e ); 
	    }
    }

    public void reset()
    {}

    public Object getCachedValue(Object key) 
    { return null; }

    public void removeFromCache(Object key) 
    {}

    public void setCachedValue(Object key, Object value) 
    {}

    public Iterator cachedKeys() 
    { return IteratorUtils.EMPTY_ITERATOR; }
}