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/*
* The MIT License (MIT)
*
* Copyright (c) 2012-2014 lacolaco.net
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package net.lacolaco.smileessence.data;
import twitter4j.DirectMessage;
import java.util.Collection;
import java.util.concurrent.ConcurrentHashMap;
public class DirectMessageCache
{
// ------------------------------ FIELDS ------------------------------
private static DirectMessageCache instance = new DirectMessageCache();
private ConcurrentHashMap<Long, DirectMessage> cache = new ConcurrentHashMap<>();
// -------------------------- STATIC METHODS --------------------------
private DirectMessageCache()
{
}
// --------------------------- CONSTRUCTORS ---------------------------
public static DirectMessageCache getInstance()
{
return instance;
}
// -------------------------- OTHER METHODS --------------------------
/**
* Get all elements
*
* @return cached all message
*/
public Collection<DirectMessage> all()
{
return cache.values();
}
/**
* Get message by id
*
* @param id message id
* @return cached value
*/
public DirectMessage get(long id)
{
return cache.get(id);
}
/**
* Put message into cache
*
* @param message
* @return the previous value associated with key, or null if there was no mapping for key
*/
public DirectMessage put(DirectMessage message)
{
return cache.put(message.getId(), message);
}
/**
* Remove message by id
*
* @param id message id
* @return removed message
*/
public DirectMessage remove(long id)
{
return cache.remove(id);
}
}
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