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 org.apache.apex.examples.mroperator;
  
  import org.apache.hadoop.mapred.Counters;
  import org.apache.hadoop.mapred.Counters.Counter;
  import org.apache.hadoop.mapred.InputSplit;
  import org.apache.hadoop.mapred.Reporter;
  
  /**
   * <p>ReporterImpl class.</p>
   *
   * @since 0.9.0
   */
  public class ReporterImpl implements Reporter
  {
    private Counters counters;
    InputSplit inputSplit;
  
    public enum ReporterType
    {
      Mapper, Reducer
    }
  
    private ReporterType typ;
  
    public ReporterImpl(final ReporterType kind, final Counters ctrs)
    {
      this.typ = kind;
      this.counters = ctrs;
    }
  
    @Override
    public InputSplit getInputSplit()
    {
      if (typ == ReporterType.Reducer) {
        throw new UnsupportedOperationException("Reducer cannot call getInputSplit()");
      } else {
        return inputSplit;
      }
    }
  
    public void setInputSplit(InputSplit inputSplit)
    {
      this.inputSplit = inputSplit;
    }
  
    @Override
    public void incrCounter(Enum<?> key, long amount)
    {
      if (null != counters) {
        counters.incrCounter(key, amount);
      }
    }
  
    @Override
    public void incrCounter(String group, String counter, long amount)
    {
      if (null != counters) {
        counters.incrCounter(group, counter, amount);
      }
    }
  
    @Override
    public void setStatus(String status)
    {
      // do nothing.
    }
  
    @Override
    public void progress()
    {
      // do nothing.
    }
  
    @Override
    public Counter getCounter(String group, String name)
    {
      Counters.Counter counter = null;
      if (counters != null) {
        counter = counters.findCounter(group, name);
      }
  
      return counter;
    }
  
    @Override
    public Counter getCounter(Enum<?> key)
    {
      Counters.Counter counter = null;
      if (counters != null) {
        counter = counters.findCounter(key);
      }
  
      return counter;
    }
  
    public float getProgress()
    {
      return 0;
    }
  
  }
  