hbase-common/src/main/java/org/apache/hadoop/hbase/util/ObjectIntPair.java

   1 /**
   2  *
   3  * Licensed to the Apache Software Foundation (ASF) under one
   4  * or more contributor license agreements.  See the NOTICE file
   5  * distributed with this work for additional information
   6  * regarding copyright ownership.  The ASF licenses this file
   7  * to you under the Apache License, Version 2.0 (the
   8  * "License"); you may not use this file except in compliance
   9  * with the License.  You may obtain a copy of the License at
  10  *
  11  *     http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  */
  19
  20 package org.apache.hadoop.hbase.util;
  21
  22 import org.apache.yetus.audience.InterfaceAudience;
  23
  24 /**
  25  *  A generic class for pair of an Object and and a primitive int value.
  26  */
  27 @InterfaceAudience.Private
  28 public class ObjectIntPair<T> {
  29
  30   private T first;
  31   private int second;
  32
  33   public ObjectIntPair() {
  34   }
  35
  36   public ObjectIntPair(T first, int second) {
  37     this.setFirst(first);
  38     this.setSecond(second);
  39   }
  40
  41   public T getFirst() {
  42     return first;
  43   }
  44
  45   public void setFirst(T first) {
  46     this.first = first;
  47   }
  48
  49   public int getSecond() {
  50     return second;
  51   }
  52
  53   public void setSecond(int second) {
  54     this.second = second;
  55   }
  56
  57   @Override
  58   public boolean equals(Object other) {
  59     return other instanceof ObjectIntPair && equals(first, ((ObjectIntPair<?>) other).first)
  60         && (this.second == ((ObjectIntPair<?>) other).second);
  61   }
  62
  63   private static boolean equals(Object x, Object y) {
  64     return (x == null && y == null) || (x != null && x.equals(y));
  65   }
  66
  67   @Override
  68   public int hashCode() {
  69     return first == null ? 0 : (first.hashCode() * 17) + 13 * second;
  70   }
  71
  72   @Override
  73   public String toString() {
  74     return "{" + getFirst() + "," + getSecond() + "}";
  75   }
  76 }