/*
 * Copyright [2013-2014] PayPal Software Foundation
 *  
 * Licensed 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 ml.shifu.guagua.mapreduce;

import java.io.IOException;

import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.OutputCommitter;
import org.apache.hadoop.mapreduce.OutputFormat;
import org.apache.hadoop.mapreduce.RecordWriter;
import org.apache.hadoop.mapreduce.TaskAttemptContext;

/**
 * This is for internal use only. In guagua framework, we don't use mapreduce output format, so this is empty
 * implementation.
 */
public class GuaguaOutputFormat extends OutputFormat<Text, Text> {

    @Override
    public OutputCommitter getOutputCommitter(TaskAttemptContext context) throws IOException, InterruptedException {
        return new GuaguaOutputCommitter();
    }

    @Override
    public RecordWriter<Text, Text> getRecordWriter(TaskAttemptContext context) throws IOException,
            InterruptedException {
        return new GuaguaRecordWriter();
    }

    @Override
    public void checkOutputSpecs(JobContext context) throws IOException, InterruptedException {
        // do nothing
    }
}