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.hadoop.hive.ql.io.orc;
  
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
  import org.apache.hadoop.io.NullWritable;
  import org.apache.hadoop.mapreduce.InputSplit;
  import org.apache.hadoop.mapreduce.TaskAttemptContext;
  
  import java.io.IOException;
  import java.util.List;
  
  /**
   * This is based on hive-exec-1.2.1
   * {@link org.apache.hadoop.hive.ql.io.orc.OrcNewInputFormat.OrcRecordReader}.
   * This class exposes getObjectInspector which can be used for reducing
   * NameNode calls in OrcRelation.
   */
  public class SparkOrcNewRecordReader extends
      org.apache.hadoop.mapreduce.RecordReader<NullWritable, OrcStruct> {
    private final org.apache.hadoop.hive.ql.io.orc.RecordReader reader;
    private final int numColumns;
    OrcStruct value;
    private float progress = 0.0f;
    private ObjectInspector objectInspector;
  
    public SparkOrcNewRecordReader(Reader file, Configuration conf,
        long offset, long length) throws IOException {
      List<OrcProto.Type> types = file.getTypes();
      numColumns = (types.size() == 0) ? 0 : types.get(0).getSubtypesCount();
      value = new OrcStruct(numColumns);
      this.reader = OrcInputFormat.createReaderFromFile(file, conf, offset,
          length);
      this.objectInspector = file.getObjectInspector();
    }
  
    @Override
    public void close() throws IOException {
      reader.close();
    }
  
    @Override
    public NullWritable getCurrentKey() throws IOException,
        InterruptedException {
      return NullWritable.get();
    }
  
    @Override
    public OrcStruct getCurrentValue() throws IOException,
        InterruptedException {
      return value;
    }
  
    @Override
    public float getProgress() throws IOException, InterruptedException {
      return progress;
    }
  
    @Override
    public void initialize(InputSplit split, TaskAttemptContext context)
        throws IOException, InterruptedException {
    }
  
    @Override
    public boolean nextKeyValue() throws IOException, InterruptedException {
      if (reader.hasNext()) {
        reader.next(value);
        progress = reader.getProgress();
        return true;
      } else {
        return false;
      }
    }
  
    public ObjectInspector getObjectInspector() {
      return objectInspector;
    }
  }
  