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/**
* 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.mrql;
import org.apache.mrql.gen.Trees;
import java.io.*;
import org.apache.hadoop.fs.*;
import org.apache.hadoop.io.*;
import org.apache.hadoop.conf.Configuration;
import org.apache.hama.bsp.*;
import org.apache.hama.HamaConfiguration;
/** Input format for hadoop sequence files */
final public class BSPBinaryInputFormat extends BSPMRQLFileInputFormat {
public static class BinaryInputRecordReader extends SequenceFileRecordReader<MRContainer,MRContainer> {
final MRContainer result = new MRContainer();
final MRData source_num_data;
final int source_number;
public BinaryInputRecordReader ( FileSplit split,
BSPJob job,
int source_number ) throws IOException {
super(BSPPlan.getConfiguration(job),split);
this.source_number = source_number;
source_num_data = new MR_int(source_number);
}
@Override
public synchronized boolean next ( MRContainer key, MRContainer value ) throws IOException {
boolean b = super.next(key,result);
value.set(new Tuple(source_num_data,result.data()));
return b;
}
}
public RecordReader<MRContainer,MRContainer>
getRecordReader ( InputSplit split,
BSPJob job ) throws IOException {
Configuration conf = BSPPlan.getConfiguration(job);
String path = ((FileSplit)split).getPath().toString();
BinaryDataSource ds = (BinaryDataSource)DataSource.get(path,conf);
return new BinaryInputRecordReader((FileSplit)split,job,ds.source_num);
}
}