| /** |
| * 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.crunch.io.orc; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.hadoop.hive.ql.io.orc.OrcNewInputFormat; |
| import org.apache.hadoop.hive.ql.io.orc.OrcStruct; |
| import org.apache.hadoop.io.NullWritable; |
| import org.apache.hadoop.mapreduce.InputFormat; |
| import org.apache.hadoop.mapreduce.InputSplit; |
| import org.apache.hadoop.mapreduce.JobContext; |
| import org.apache.hadoop.mapreduce.RecordReader; |
| import org.apache.hadoop.mapreduce.TaskAttemptContext; |
| |
| public class OrcCrunchInputFormat extends InputFormat<NullWritable, OrcWritable> { |
| |
| private OrcNewInputFormat inputFormat = new OrcNewInputFormat(); |
| |
| @Override |
| public List<InputSplit> getSplits(JobContext context) throws IOException, |
| InterruptedException { |
| return inputFormat.getSplits(context); |
| } |
| |
| @Override |
| public RecordReader<NullWritable, OrcWritable> createRecordReader( |
| InputSplit split, TaskAttemptContext context) throws IOException, |
| InterruptedException { |
| RecordReader<NullWritable, OrcStruct> reader = inputFormat.createRecordReader( |
| split, context); |
| return new OrcCrunchRecordReader(reader); |
| } |
| |
| static class OrcCrunchRecordReader extends RecordReader<NullWritable, OrcWritable> { |
| |
| private final RecordReader<NullWritable, OrcStruct> reader; |
| private OrcWritable value = new OrcWritable(); |
| |
| OrcCrunchRecordReader(RecordReader<NullWritable, OrcStruct> reader) { |
| this.reader = reader; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| reader.close(); |
| } |
| |
| @Override |
| public NullWritable getCurrentKey() throws IOException, |
| InterruptedException { |
| return NullWritable.get(); |
| } |
| |
| @Override |
| public OrcWritable getCurrentValue() throws IOException, InterruptedException { |
| return value; |
| } |
| |
| @Override |
| public float getProgress() throws IOException, InterruptedException { |
| return reader.getProgress(); |
| } |
| |
| @Override |
| public void initialize(InputSplit split, TaskAttemptContext context) |
| throws IOException, InterruptedException { |
| |
| } |
| |
| @Override |
| public boolean nextKeyValue() throws IOException, InterruptedException { |
| boolean hasNext = reader.nextKeyValue(); |
| if (hasNext) { |
| value.set(reader.getCurrentValue()); |
| } |
| return hasNext; |
| } |
| |
| } |
| |
| } |