content: /*
   * Copyright 1999-2012 Alibaba Group.
   *  
   * Licensed 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 com.alibaba.cobar.manager.util;
  
  import org.apache.commons.lang.builder.EqualsBuilder;
  import org.apache.commons.lang.builder.HashCodeBuilder;
  import org.apache.commons.lang.builder.ToStringBuilder;
  
  /**
   * (created at 2010-7-21)
   * 
   * @author <a href="mailto:shuo.qius@alibaba-inc.com">QIU Shuo</a>
   */
  public class Pair<K, V> {
      private final K first;
      private final V second;
  
      public Pair(K first, V second) {
          this.first = first;
          this.second = second;
      }
  
      public K getFirst() {
          return first;
      }
  
      public V getSecond() {
          return second;
      }
  
      @Override
      public String toString() {
          return new ToStringBuilder(this).append(first).append(second).toString();
      }
  
      @Override
      public int hashCode() {
          return new HashCodeBuilder().append(first).append(second).toHashCode();
      }
  
      @SuppressWarnings("rawtypes")
      @Override
      public boolean equals(Object obj) {
          if (this == obj) return true;
          if (!(obj instanceof Pair)) return false;
          Pair that = (Pair) obj;
          return new EqualsBuilder().append(this.first, that.first).append(this.second, that.second).isEquals();
      }
  }
  