/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.common.buffer;
public class CacheKey implements Comparable<CacheKey> {
private final Long id;
protected final long lastAccess;
protected final long orderingValue;
public CacheKey(Long id, long lastAccess, long orderingValue) {
this.id = id;
this.lastAccess = lastAccess;
this.orderingValue = orderingValue;
}
public Long getId() {
return id;
}
@Override
public int hashCode() {
return id.hashCode();
}
@Override
public String toString() {
return id.toString();
}
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof CacheKey)) {
return false;
}
return this.id.equals(((CacheKey)obj).getId());
}
public long getLastAccess() {
return lastAccess;
}
public long getOrderingValue() {
return orderingValue;
}
@Override
public int compareTo(CacheKey o) {
int result = orderingValue < o.orderingValue ? -1 : (orderingValue == o.orderingValue ? 0 : 1);
if (result == 0) {
result = lastAccess < o.lastAccess ? -1 : (lastAccess == o.lastAccess ? 0 : 1);
if (result == 0) {
return id.compareTo(o.id);
}
}
return result;
}
}