/*
* Copyright 2011, 2012 Odysseus Software GmbH
*
* 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 org.apache.synapse.commons.staxon.core.base;
/**
* Object pair.
*
* @param <F> first type
* @param <S> second type
*/
class Pair<F, S> {
private final F first;
private final S second;
/**
* Create a new pair instance.
*
* @param first first object
* @param second second object
*/
Pair(F first, S second) {
this.first = first;
this.second = second;
}
/**
* @return first object
*/
F getFirst() {
return first;
}
/**
* @return second object
*/
S getSecond() {
return second;
}
@Override
public int hashCode() {
return (first == null ? 0 : first.hashCode()) ^ (second == null ? 0 : second.hashCode());
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || getClass() != obj.getClass()) {
return false;
}
Pair<?, ?> other = (Pair<?, ?>) obj;
if (first == null) {
if (other.first != null) {
return false;
}
} else if (!first.equals(other.first)) {
return false;
}
if (second == null) {
if (other.second != null) {
return false;
}
} else if (!second.equals(other.second)) {
return false;
}
return true;
}
@Override
public String toString() {
return "Pair(" + first + "," + second + ")";
}
}