/*
* #!
* Ontopia Engine
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* !#
*/
package net.ontopia.topicmaps.query.parser;
/**
* INTERNAL: Used to represent a : b pairs in tolog queries.
*/
public class Pair {
protected Object first;
protected Object second;
public Pair(Object first, Object second) {
this.first = first;
this.second = second;
}
public Object getFirst() {
return first;
}
public Object getSecond() {
return second;
}
public String toString() {
return first + " : " + second;
}
public boolean equals(Object obj) {
if (!(obj instanceof Pair))
return false;
Pair pair = (Pair)obj;
return (first.equals(pair.first) &&
second.equals(pair.second));
}
public int hashCode() {
return first.hashCode() + second.hashCode();
}
}