jforum example source code file (DefaultCacheEngine.java)

This example jforum source code file (DefaultCacheEngine.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - jforum tags/keywords

arraylist, cacheengine, collection, defaultcacheengine, hashmap, hashmap, map, map, object, object, string, string, util

The jforum DefaultCacheEngine.java source code

/*
 * Copyright (c)Rafael Steil
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met:
 * 
 * 1) Redistributions of source code must retain the above 
 * copyright notice, this list of conditions and the 
 * following  disclaimer.
 * 2)  Redistributions in binary form must reproduce the 
 * above copyright notice, this list of conditions and 
 * the following disclaimer in the documentation and/or 
 * other materials provided with the distribution.
 * 3) Neither the name of "Rafael Steil" nor 
 * the names of its contributors may be used to endorse 
 * or promote products derived from this software without 
 * specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT 
 * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
 * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 
 * IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
 * 
 * Created on Feb 1, 2005 7:30:35 PM
 * The JForum Project
 * http://www.jforum.net
 */
package net.jforum.cache;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

/**
 * @author Rafael Steil
 * @version $Id: DefaultCacheEngine.java,v 1.9 2005/09/25 02:40:28 rafaelsteil Exp $
 */
public class DefaultCacheEngine implements CacheEngine
{
	private Map cache = new HashMap();
	
	/**
	 * @see net.jforum.cache.CacheEngine#add(java.lang.String, java.lang.Object)
	 */
	public void add(String key, Object value)
	{
		this.cache.put(key, value);
	}
	
	/**
	 * @see net.jforum.cache.CacheEngine#add(java.lang.String, java.lang.String, java.lang.Object)
	 */
	public void add(String fqn, String key, Object value)
	{
		Map m = (Map)this.cache.get(fqn);
		if (m == null) {
			m = new HashMap();
		}

		m.put(key, value);
		this.cache.put(fqn, m);
	}
	
	/**
	 * @see net.jforum.cache.CacheEngine#get(java.lang.String, java.lang.String)
	 */
	public Object get(String fqn, String key)
	{
		Map m = (Map)this.cache.get(fqn);
		if (m == null) {
			return null;
		}
		
		return m.get(key);
	}
	
	/**
	 * @see net.jforum.cache.CacheEngine#get(java.lang.String)
	 */
	public Object get(String fqn)
	{
		return this.cache.get(fqn);
	}
	
	/**
	 * @see net.jforum.cache.CacheEngine#getValues(java.lang.String)
	 */
	public Collection getValues(String fqn)
	{
		Map m = (Map)this.cache.get(fqn);
		if (m == null) {
			return new ArrayList();
		}
		
		return m.values();
	}
	
	/**
	 * @see net.jforum.cache.CacheEngine#init()
	 */
	public void init()
	{
		this.cache = new HashMap();
	}
	
	/**
	 * @see net.jforum.cache.CacheEngine#stop()
	 */
	public void stop() {}
	
	/**
	 * @see net.jforum.cache.CacheEngine#remove(java.lang.String, java.lang.String)
	 */
	public void remove(String fqn, String key)
	{
		Map m = (Map)this.cache.get(fqn);
		if (m != null) {
			m.remove(key);
		}
	}
	
	/**
	 * @see net.jforum.cache.CacheEngine#remove(java.lang.String)
	 */
	public void remove(String fqn)
	{
		this.cache.remove(fqn);
	}
}