/**
* Copyright (C) 2001-2017 by RapidMiner and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapidminer.com
*
* This program is free software: you can redistribute it and/or modify it under the terms of the
* GNU Affero General Public License as published by the Free Software Foundation, either version 3
* of the License, or (at your option) any later version.
*
* This program 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
* Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License along with this program.
* If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.tools.container;
import java.io.Serializable;
/**
* A basic container class for a pair of objects.
*
* @author Sebastian Land
*/
public class Pair<T, K> implements Serializable {
private static final long serialVersionUID = 1L;
private T first;
private K second;
public Pair(T t, K k) {
this.setFirst(t);
this.setSecond(k);
}
public T getFirst() {
return first;
}
public void setFirst(T first) {
this.first = first;
}
public K getSecond() {
return second;
}
public void setSecond(K second) {
this.second = second;
}
@Override
public String toString() {
String tString = (getFirst() == null) ? "null" : getFirst().toString();
String kString = (getSecond() == null) ? "null" : getSecond().toString();
return tString + " : " + kString;
}
@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 || 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;
}
}