/*
* 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.jena.hadoop.rdf.io.input.ntriples;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.mapreduce.InputSplit;
import org.apache.hadoop.mapreduce.RecordReader;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
import org.apache.jena.hadoop.rdf.io.input.AbstractNLineFileInputFormat;
import org.apache.jena.hadoop.rdf.io.input.readers.ntriples.BlockedNTriplesReader;
import org.apache.jena.hadoop.rdf.types.TripleWritable;
/**
* NTriples input format where files are processed as blocks of lines rather
* than in a line based manner as with the {@link NTriplesInputFormat} or as
* whole files with the {@link WholeFileNTriplesInputFormat}
* <p>
* This provides a compromise between the higher parser setup of creating more
* parsers and the benefit of being able to split input files over multiple
* mappers.
* </p>
*
*
*
*/
public class BlockedNTriplesInputFormat extends AbstractNLineFileInputFormat<LongWritable, TripleWritable> {
@Override
public RecordReader<LongWritable, TripleWritable> createRecordReader(InputSplit split, TaskAttemptContext context) {
return new BlockedNTriplesReader();
}
}