content: /**
   * 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 com.alibaba.jstorm.transactional.spout;
  
  import java.util.Map;
  
  import backtype.storm.spout.SpoutOutputCollector;
  import backtype.storm.task.TopologyContext;
  
  public class BasicTransactionSpout extends TransactionSpout {
      public BasicTransactionSpout(ITransactionSpoutExecutor spoutExecutor) {
          super(spoutExecutor);
      }
  
      @Override
      public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
          super.open(conf, context, collector);
          /**
           *  For backward compatibility to release 2.2.*, the conversion of output collector to 
           *  BasicSpoutOutputCollector is still kept here.
           */
          if (spoutExecutor instanceof BasicTransactionSpoutExecutor) {
              ((BasicTransactionSpoutExecutor) spoutExecutor).open(conf, context, new BasicSpoutOutputCollector(outputCollector));
          } else if (spoutExecutor instanceof IBasicTransactionSpoutExecutor) {
              ((IBasicTransactionSpoutExecutor) spoutExecutor).open(conf, context, new BasicSpoutOutputCollector(outputCollector));
          } else {
              spoutExecutor.open(conf, context, new SpoutOutputCollector(outputCollector));
          }
      }
  }