spork-master/contrib/piggybank/java/src/main/java/org/apache/pig/piggybank/storage/avro/PigAvroRecordWriter.java
/*
 * 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.pig.piggybank.storage.avro;

import java.io.IOException;
import org.apache.avro.file.DataFileWriter;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.mapreduce.RecordWriter;
import org.apache.hadoop.mapreduce.TaskAttemptContext;

/**
 * The RecordWriter used to output pig results as avro data
 */
public class PigAvroRecordWriter extends RecordWriter<NullWritable, Object> {

    private DataFileWriter<Object> writer;

    /**
     * construct with avro writer
     * @param writer                avro data writer
     */
    public PigAvroRecordWriter(DataFileWriter<Object> writer) {
        this.writer = writer;

    }

    @Override
    public void close(TaskAttemptContext context) throws IOException, InterruptedException {
        writer.close();
    }

    @Override
    public void write(NullWritable key, Object value) throws IOException, InterruptedException {
        writer.append(value);
    }
}
