package org.apache.lucene.codecs.lucene40;
/*
* 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.
*/
import java.io.IOException;
import org.apache.lucene.codecs.CodecUtil;
import org.apache.lucene.codecs.SegmentInfoWriter;
import org.apache.lucene.index.FieldInfos;
import org.apache.lucene.index.IndexFileNames;
import org.apache.lucene.index.SegmentInfo;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.IOContext;
import org.apache.lucene.store.IndexOutput;
import org.apache.lucene.util.IOUtils;
/**
* Lucene 4.0 implementation of {@link SegmentInfoWriter}.
*
* @see Lucene40SegmentInfoFormat
* @lucene.experimental
*/
public class Lucene40SegmentInfoWriter extends SegmentInfoWriter {
/** Sole constructor. */
public Lucene40SegmentInfoWriter() {
}
/** Save a single segment's info. */
@Override
public void write(Directory dir, SegmentInfo si, FieldInfos fis, IOContext ioContext) throws IOException {
final String fileName = IndexFileNames.segmentFileName(si.name, "", Lucene40SegmentInfoFormat.SI_EXTENSION);
si.addFile(fileName);
final IndexOutput output = dir.createOutput(fileName, ioContext);
boolean success = false;
try {
CodecUtil.writeHeader(output, Lucene40SegmentInfoFormat.CODEC_NAME, Lucene40SegmentInfoFormat.VERSION_CURRENT);
// Write the Lucene version that created this segment, since 3.1
output.writeString(si.getVersion());
output.writeInt(si.getDocCount());
output.writeByte((byte) (si.getUseCompoundFile() ? SegmentInfo.YES : SegmentInfo.NO));
output.writeStringStringMap(si.getDiagnostics());
output.writeStringStringMap(si.attributes());
output.writeStringSet(si.files());
success = true;
} finally {
if (!success) {
IOUtils.closeWhileHandlingException(output);
si.dir.deleteFile(fileName);
} else {
output.close();
}
}
}
}