| using System; |
| using System.Runtime.CompilerServices; |
| using SegmentReadState = Lucene.Net.Index.SegmentReadState; |
| using SegmentWriteState = Lucene.Net.Index.SegmentWriteState; |
| |
| namespace Lucene.Net.Codecs.Lucene3x |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// Codec that reads the pre-flex-indexing postings |
| /// format. It does not provide a writer because newly |
| /// written segments should use the <see cref="Codec"/> configured on <see cref="Index.IndexWriter"/>. |
| /// <para/> |
| /// @lucene.experimental |
| /// </summary> |
| [Obsolete("(4.0) this is only used to read indexes created before 4.0.")] |
| [PostingsFormatName("Lucene3x")] // LUCENENET specific - using PostingsFormatName attribute to ensure the default name passed from subclasses is the same as this class name |
| internal class Lucene3xPostingsFormat : PostingsFormat |
| { |
| /// <summary> |
| /// Extension of terms file. </summary> |
| public const string TERMS_EXTENSION = "tis"; |
| |
| /// <summary> |
| /// Extension of terms index file. </summary> |
| public const string TERMS_INDEX_EXTENSION = "tii"; |
| |
| /// <summary> |
| /// Extension of freq postings file. </summary> |
| public const string FREQ_EXTENSION = "frq"; |
| |
| /// <summary> |
| /// Extension of prox postings file </summary> |
| public const string PROX_EXTENSION = "prx"; |
| |
| public Lucene3xPostingsFormat() |
| : base() |
| { |
| } |
| |
| public override FieldsConsumer FieldsConsumer(SegmentWriteState state) |
| { |
| throw new NotSupportedException("this codec can only be used for reading"); |
| } |
| |
| [MethodImpl(MethodImplOptions.AggressiveInlining)] |
| public override FieldsProducer FieldsProducer(SegmentReadState state) |
| { |
| return new Lucene3xFields(state.Directory, state.FieldInfos, state.SegmentInfo, state.Context, state.TermsIndexDivisor); |
| } |
| } |
| } |