/*
* 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.mapreduce.transform;
import java.io.IOException;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.jena.hadoop.rdf.types.QuadWritable;
import org.apache.jena.hadoop.rdf.types.TripleWritable;
/**
* A mapper which transforms quads into triples
* <p>
* Keys are left as is by this mapper.
* </p>
*
*
*
* @param <TKey>
* Key type
*/
public class QuadsToTriplesMapper<TKey> extends Mapper<TKey, QuadWritable, TKey, TripleWritable> {
@Override
protected void map(TKey key, QuadWritable value, Context context) throws IOException, InterruptedException {
context.write(key, new TripleWritable(value.get().asTriple()));
}
}