/*
* Cloud9: A MapReduce Library for Hadoop
*
* 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 edu.umd.cloud9.collection.aquaint2;
import java.io.IOException;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.FileSplit;
import org.apache.hadoop.mapred.InputSplit;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.RecordReader;
import org.apache.hadoop.mapred.Reporter;
import edu.umd.cloud9.collection.IndexableFileInputFormatOld;
import edu.umd.cloud9.collection.XMLInputFormatOld;
import edu.umd.cloud9.collection.XMLInputFormatOld.XMLRecordReader;
public class Aquaint2DocumentInputFormatOld extends
IndexableFileInputFormatOld<LongWritable, Aquaint2Document> {
public void configure(JobConf conf) {}
public RecordReader<LongWritable, Aquaint2Document> getRecordReader(InputSplit inputSplit,
JobConf conf, Reporter reporter) throws IOException {
return new Aquaint2DocumentRecordReader((FileSplit) inputSplit, conf);
}
public static class Aquaint2DocumentRecordReader implements
RecordReader<LongWritable, Aquaint2Document> {
private final XMLRecordReader reader;
private final Text text = new Text();
private final LongWritable offset = new LongWritable();
public Aquaint2DocumentRecordReader(FileSplit split, JobConf conf) throws IOException {
conf.set(XMLInputFormatOld.START_TAG_KEY, Aquaint2Document.XML_START_TAG);
conf.set(XMLInputFormatOld.END_TAG_KEY, Aquaint2Document.XML_END_TAG);
reader = new XMLRecordReader(split, conf);
}
@Override
public boolean next(LongWritable key, Aquaint2Document value) throws IOException {
if (reader.next(offset, text) == false)
return false;
key.set(offset.get());
Aquaint2Document.readDocument(value, text.toString());
return true;
}
@Override
public LongWritable createKey() {
return new LongWritable();
}
@Override
public Aquaint2Document createValue() {
return new Aquaint2Document();
}
@Override
public long getPos() throws IOException {
return reader.getPos();
}
@Override
public void close() throws IOException {
reader.close();
}
@Override
public float getProgress() throws IOException {
return ((float) (reader.getPos() - reader.getStart()))
/ ((float) (reader.getEnd() - reader.getStart()));
}
}
}