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.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.index.FieldInfo.IndexOptions;
import org.apache.lucene.index.SegmentReadState;
import org.apache.lucene.index.SegmentWriteState;
import org.apache.lucene.util.IOUtils;
/**
* FST term dict + Lucene41PBF
*/
public final class FSTPostingsFormat extends PostingsFormat {
public FSTPostingsFormat() {
super("FST41");
}
@Override
public String toString() {
return getName();
}
@Override
public FieldsConsumer fieldsConsumer(SegmentWriteState state) throws IOException {
PostingsWriterBase postingsWriter = new Lucene41PostingsWriter(state);
boolean success = false;
try {
FieldsConsumer ret = new FSTTermsWriter(state, postingsWriter);
success = true;
return ret;
} finally {
if (!success) {
IOUtils.closeWhileHandlingException(postingsWriter);
}
}
}
@Override
public FieldsProducer fieldsProducer(SegmentReadState state) throws IOException {
PostingsReaderBase postingsReader = new Lucene41PostingsReader(state.directory,
state.fieldInfos,
state.segmentInfo,
state.context,
state.segmentSuffix);
boolean success = false;
try {
FieldsProducer ret = new FSTTermsReader(state, postingsReader);
success = true;
return ret;
} finally {
if (!success) {
IOUtils.closeWhileHandlingException(postingsReader);
}
}
}
}