/* Copyright 2013 The jeo project. All rights reserved.
*
* 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 io.jeo.util;
/**
* Tuple utility class.
*
* @author Justin Deoliveira, OpenGeo
*/
public class Pair<F,S> {
public final F first;
public final S second;
/**
* Creates a new pair.
*/
public static <F, S> Pair<F,S> of(F first, S second) {
return new Pair<F,S>(first, second);
}
public Pair(F first, S second) {
this.first = first;
this.second = second;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((first == null) ? 0 : first.hashCode());
result = prime * result + ((second == null) ? 0 : second.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (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 new StringBuilder().append("(")
.append(first).append(",").append(second).append(")").toString();
}
}