/*
 * Copyright (c) 2012 Socialize Inc.
 * 
 * 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 com.socialize.cache;

/**
 * @author Jason Polites
 * 
 */
public class Key<K extends Comparable<K>> implements Comparable<Key<K>> {

	private long time;
	private K key;

	public Key(K key, long time) {
		this.time = time;
		this.key = key;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see java.lang.Comparable#compareTo(java.lang.Object)
	 */
	public int compareTo(Key<K> o) {
		if(o != null) {
			if (o.time > time) {
				return -1;
			}
			else if (o.time < time) {
				return 1;
			}
			else if(o.key != null) {
				return o.key.compareTo(key);
			}
			else {
				return 0;
			}
		}
		
		return 0;
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((key == null) ? 0 : key.hashCode());
		return result;
	}

	@SuppressWarnings("unchecked")
	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Key<K> other = (Key<K>) obj;
		if (key == null) {
			if (other.key != null)
				return false;
		}
		else if (!key.equals(other.key))
			return false;
		return true;
	}

	public String toString() {
		return key.toString();
	}

	public long getTime() {
		return time;
	}

	public K getKey() {
		return key;
	}

	void setTime(long time) {
		this.time = time;
	}
}