package org.apache.lucene.codecs.memory;
/*
* 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.FieldsConsumer;
import org.apache.lucene.codecs.FieldsProducer;
import org.apache.lucene.codecs.PostingsBaseFormat;
import org.apache.lucene.codecs.PostingsFormat;
import org.apache.lucene.codecs.PostingsReaderBase;
import org.apache.lucene.codecs.PostingsWriterBase;
import org.apache.lucene.codecs.lucene41.Lucene41PostingsWriter;
import org.apache.lucene.codecs.lucene41.Lucene41PostingsReader;
import org.apache.lucene.codecs.lucene41.Lucene41PostingsBaseFormat;
import org.apache.lucene.codecs.lucene41.Lucene41PostingsFormat;
import org.apache.lucene.codecs.pulsing.PulsingPostingsWriter;
import org.apache.lucene.codecs.pulsing.PulsingPostingsReader;
import org.apache.lucene.index.SegmentReadState;
import org.apache.lucene.index.SegmentWriteState;
import org.apache.lucene.util.IOUtils;
/** FSTOrd + Pulsing41
* @lucene.experimental */
public class FSTOrdPulsing41PostingsFormat extends PostingsFormat {
private final PostingsBaseFormat wrappedPostingsBaseFormat;
private final int freqCutoff;
public FSTOrdPulsing41PostingsFormat() {
this(1);
}
public FSTOrdPulsing41PostingsFormat(int freqCutoff) {
super("FSTOrdPulsing41");
this.wrappedPostingsBaseFormat = new Lucene41PostingsBaseFormat();
this.freqCutoff = freqCutoff;
}
@Override
public FieldsConsumer fieldsConsumer(SegmentWriteState state) throws IOException {
PostingsWriterBase docsWriter = null;
PostingsWriterBase pulsingWriter = null;
boolean success = false;
try {
docsWriter = wrappedPostingsBaseFormat.postingsWriterBase(state);
pulsingWriter = new PulsingPostingsWriter(state, freqCutoff, docsWriter);
FieldsConsumer ret = new FSTOrdTermsWriter(state, pulsingWriter);
success = true;
return ret;
} finally {
if (!success) {
IOUtils.closeWhileHandlingException(docsWriter, pulsingWriter);
}
}
}
@Override
public FieldsProducer fieldsProducer(SegmentReadState state) throws IOException {
PostingsReaderBase docsReader = null;
PostingsReaderBase pulsingReader = null;
boolean success = false;
try {
docsReader = wrappedPostingsBaseFormat.postingsReaderBase(state);
pulsingReader = new PulsingPostingsReader(state, docsReader);
FieldsProducer ret = new FSTOrdTermsReader(state, pulsingReader);
success = true;
return ret;
} finally {
if (!success) {
IOUtils.closeWhileHandlingException(docsReader, pulsingReader);
}
}
}
}