| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.cassandra.utils; |
| |
| import com.google.common.base.Objects; |
| |
| public class Pair<T1, T2> |
| { |
| public final T1 left; |
| public final T2 right; |
| |
| protected Pair(T1 left, T2 right) |
| { |
| this.left = left; |
| this.right = right; |
| } |
| |
| @Override |
| public final int hashCode() |
| { |
| int hashCode = 31 + (left == null ? 0 : left.hashCode()); |
| return 31*hashCode + (right == null ? 0 : right.hashCode()); |
| } |
| |
| @Override |
| public final boolean equals(Object o) |
| { |
| if(!(o instanceof Pair)) |
| return false; |
| Pair that = (Pair)o; |
| // handles nulls properly |
| return Objects.equal(left, that.left) && Objects.equal(right, that.right); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return "(" + left + "," + right + ")"; |
| } |
| |
| //For functional interfaces |
| public T1 left() |
| { |
| return left; |
| } |
| |
| //For functional interfaces |
| public T2 right() |
| { |
| return right; |
| } |
| |
| public static <X, Y> Pair<X, Y> create(X x, Y y) |
| { |
| return new Pair<X, Y>(x, y); |
| } |
| } |