content: /*
   * Copyright (C) 2010-2101 Alibaba Group Holding Limited.
   *
   * 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.otter.shared.etl.model;
  
  import java.util.Comparator;
  
  /**
   * 按照EventColumn的index进行排序.
   * 
   * @author xiaoqing.zhouxq 2012-3-8 上午11:38:25
   */
  public class EventColumnIndexComparable implements Comparator<EventColumn> {
  
      public int compare(EventColumn o1, EventColumn o2) {
          if (o1.getIndex() < o2.getIndex()) {
              return -1;
          } else if (o1.getIndex() == o2.getIndex()) {
              return 0;
          } else {
              return 1;
          }
      }
  
  }
  