| /* |
| * 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. |
| */ |
| |
| package org.apache.lucene.backward_codecs.lucene86; |
| |
| import java.util.Objects; |
| import org.apache.lucene.backward_codecs.lucene50.Lucene50StoredFieldsFormat; |
| import org.apache.lucene.codecs.Codec; |
| import org.apache.lucene.codecs.CompoundFormat; |
| import org.apache.lucene.codecs.DocValuesFormat; |
| import org.apache.lucene.codecs.FieldInfosFormat; |
| import org.apache.lucene.codecs.FilterCodec; |
| import org.apache.lucene.codecs.LiveDocsFormat; |
| import org.apache.lucene.codecs.NormsFormat; |
| import org.apache.lucene.codecs.PointsFormat; |
| import org.apache.lucene.codecs.PostingsFormat; |
| import org.apache.lucene.codecs.SegmentInfoFormat; |
| import org.apache.lucene.codecs.StoredFieldsFormat; |
| import org.apache.lucene.codecs.TermVectorsFormat; |
| import org.apache.lucene.codecs.VectorFormat; |
| import org.apache.lucene.codecs.lucene50.Lucene50CompoundFormat; |
| import org.apache.lucene.codecs.lucene50.Lucene50LiveDocsFormat; |
| import org.apache.lucene.codecs.lucene50.Lucene50TermVectorsFormat; |
| import org.apache.lucene.codecs.lucene60.Lucene60FieldInfosFormat; |
| import org.apache.lucene.codecs.lucene80.Lucene80NormsFormat; |
| import org.apache.lucene.codecs.lucene84.Lucene84PostingsFormat; |
| import org.apache.lucene.codecs.lucene86.Lucene86PointsFormat; |
| import org.apache.lucene.codecs.lucene86.Lucene86SegmentInfoFormat; |
| import org.apache.lucene.codecs.perfield.PerFieldDocValuesFormat; |
| import org.apache.lucene.codecs.perfield.PerFieldPostingsFormat; |
| |
| /** |
| * Implements the Lucene 8.6 index format, with configurable per-field postings and docvalues |
| * formats. |
| * |
| * <p>If you want to reuse functionality of this codec in another codec, extend {@link FilterCodec}. |
| * |
| * @see org.apache.lucene.codecs.lucene86 package documentation for file format details. |
| * @lucene.experimental |
| */ |
| public class Lucene86Codec extends Codec { |
| private final TermVectorsFormat vectorsFormat = new Lucene50TermVectorsFormat(); |
| private final FieldInfosFormat fieldInfosFormat = new Lucene60FieldInfosFormat(); |
| private final SegmentInfoFormat segmentInfosFormat = new Lucene86SegmentInfoFormat(); |
| private final LiveDocsFormat liveDocsFormat = new Lucene50LiveDocsFormat(); |
| private final CompoundFormat compoundFormat = new Lucene50CompoundFormat(); |
| private final PointsFormat pointsFormat = new Lucene86PointsFormat(); |
| private final PostingsFormat defaultFormat; |
| |
| private final PostingsFormat postingsFormat = |
| new PerFieldPostingsFormat() { |
| @Override |
| public PostingsFormat getPostingsFormatForField(String field) { |
| return Lucene86Codec.this.getPostingsFormatForField(field); |
| } |
| }; |
| |
| private final DocValuesFormat docValuesFormat = |
| new PerFieldDocValuesFormat() { |
| @Override |
| public DocValuesFormat getDocValuesFormatForField(String field) { |
| return Lucene86Codec.this.getDocValuesFormatForField(field); |
| } |
| }; |
| |
| private final StoredFieldsFormat storedFieldsFormat; |
| |
| /** Instantiates a new codec. */ |
| public Lucene86Codec() { |
| this(Lucene50StoredFieldsFormat.Mode.BEST_SPEED); |
| } |
| |
| /** |
| * Instantiates a new codec, specifying the stored fields compression mode to use. |
| * |
| * @param mode stored fields compression mode to use for newly flushed/merged segments. |
| */ |
| public Lucene86Codec(Lucene50StoredFieldsFormat.Mode mode) { |
| super("Lucene86"); |
| this.storedFieldsFormat = new Lucene50StoredFieldsFormat(Objects.requireNonNull(mode)); |
| this.defaultFormat = new Lucene84PostingsFormat(); |
| } |
| |
| @Override |
| public StoredFieldsFormat storedFieldsFormat() { |
| return storedFieldsFormat; |
| } |
| |
| @Override |
| public final TermVectorsFormat termVectorsFormat() { |
| return vectorsFormat; |
| } |
| |
| @Override |
| public final PostingsFormat postingsFormat() { |
| return postingsFormat; |
| } |
| |
| @Override |
| public final FieldInfosFormat fieldInfosFormat() { |
| return fieldInfosFormat; |
| } |
| |
| @Override |
| public final SegmentInfoFormat segmentInfoFormat() { |
| return segmentInfosFormat; |
| } |
| |
| @Override |
| public final LiveDocsFormat liveDocsFormat() { |
| return liveDocsFormat; |
| } |
| |
| @Override |
| public final CompoundFormat compoundFormat() { |
| return compoundFormat; |
| } |
| |
| @Override |
| public final PointsFormat pointsFormat() { |
| return pointsFormat; |
| } |
| |
| @Override |
| public final VectorFormat vectorFormat() { |
| return VectorFormat.EMPTY; |
| } |
| |
| /** |
| * Returns the postings format that should be used for writing new segments of <code>field</code>. |
| * |
| * <p>The default implementation always returns "Lucene84". |
| * |
| * <p><b>WARNING:</b> if you subclass, you are responsible for index backwards compatibility: |
| * future version of Lucene are only guaranteed to be able to read the default implementation. |
| */ |
| public PostingsFormat getPostingsFormatForField(String field) { |
| return defaultFormat; |
| } |
| |
| /** |
| * Returns the docvalues format that should be used for writing new segments of <code>field</code> |
| * . |
| * |
| * <p>The default implementation always returns "Lucene80". |
| * |
| * <p><b>WARNING:</b> if you subclass, you are responsible for index backwards compatibility: |
| * future version of Lucene are only guaranteed to be able to read the default implementation. |
| */ |
| public DocValuesFormat getDocValuesFormatForField(String field) { |
| return defaultDVFormat; |
| } |
| |
| @Override |
| public final DocValuesFormat docValuesFormat() { |
| return docValuesFormat; |
| } |
| |
| private final DocValuesFormat defaultDVFormat = DocValuesFormat.forName("Lucene80"); |
| |
| private final NormsFormat normsFormat = new Lucene80NormsFormat(); |
| |
| @Override |
| public final NormsFormat normsFormat() { |
| return normsFormat; |
| } |
| } |