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.PostingsBaseFormat;
import org.apache.lucene.codecs.PostingsReaderBase;
import org.apache.lucene.codecs.PostingsWriterBase;
import org.apache.lucene.index.SegmentReadState;
import org.apache.lucene.index.SegmentWriteState;
/**
* Provides a {@link PostingsReaderBase} and {@link
* PostingsWriterBase}.
*
* @deprecated Only for reading old 4.0 segments */
// TODO: should these also be named / looked up via SPI?
@Deprecated
public final class Lucene40PostingsBaseFormat extends PostingsBaseFormat {
/** Sole constructor. */
public Lucene40PostingsBaseFormat() {
super("Lucene40");
}
@Override
public PostingsReaderBase postingsReaderBase(SegmentReadState state) throws IOException {
return new Lucene40PostingsReader(state.directory, state.fieldInfos, state.segmentInfo, state.context, state.segmentSuffix);
}
@Override
public PostingsWriterBase postingsWriterBase(SegmentWriteState state) throws IOException {
throw new UnsupportedOperationException("this codec can only be used for reading");
}
}