/*
 * 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.geode.internal.cache.persistence.query.mock;


/**
 * An object that holds a pair of objects.
 *
 */
public class Pair<X, Y> {
  private final X x;
  private final Y y;

  public Pair(X x, Y y) {
    this.x = x;
    this.y = y;
  }

  public X getX() {
    return x;
  }

  public Y getY() {
    return y;
  }

  @Override
  public String toString() {
    return "Pair [x=" + x + ", y=" + y + "]";
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((x == null) ? 0 : x.hashCode());
    result = prime * result + ((y == null) ? 0 : y.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 (x == null) {
      if (other.x != null) {
        return false;
      }
    } else if (!x.equals(other.x)) {
      return false;
    }
    if (y == null) {
      return other.y == null;
    } else
      return y.equals(other.y);
  }

}
