| /******************************************************************************* |
| * Copyright (c) 2005, 2006 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.core.internal.databinding; |
| |
| /** |
| * Class Pair. Represents a mathematical pair of objects (a, b). |
| * @since 1.0 |
| */ |
| public class Pair { |
| |
| /** |
| * a in the pair (a, b) |
| */ |
| public final Object a; |
| |
| /** |
| * b in the pair (a, b) |
| */ |
| public final Object b; |
| |
| /** |
| * Construct a Pair(a, b) |
| * |
| * @param a a in the pair (a, b) |
| * @param b b in the pair (a, b) |
| */ |
| public Pair(Object a, Object b) { |
| this.a = a; |
| this.b = b; |
| } |
| |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + ((a == null) ? 0 : a.hashCode()); |
| result = prime * result + ((b == null) ? 0 : b.hashCode()); |
| return result; |
| } |
| |
| 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 (a == null) { |
| if (other.a != null) |
| return false; |
| } else if (!a.equals(other.a)) |
| return false; |
| if (b == null) { |
| if (other.b != null) |
| return false; |
| } else if (!b.equals(other.b)) |
| return false; |
| return true; |
| } |
| |
| } |