| // Lucene version compatibility level 8.2.0 |
| using Lucene.Net.Analysis.Standard; |
| using Lucene.Net.Util; |
| using Morfologik.Stemming; |
| using Morfologik.Stemming.Polish; |
| using System.IO; |
| |
| namespace Lucene.Net.Analysis.Morfologik |
| { |
| /* |
| * 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> |
| /// <see cref="Analyzer"/> using Morfologik library. |
| /// <para/> |
| /// See: <a href="http://morfologik.blogspot.com/">Morfologik project page</a> |
| /// </summary> |
| /// <since>4.0.0</since> |
| public class MorfologikAnalyzer : Analyzer |
| { |
| private readonly Dictionary dictionary; |
| private readonly LuceneVersion version; |
| |
| /// <summary> |
| /// Builds an analyzer with an explicit <see cref="Dictionary"/> resource. |
| /// <para/> |
| /// See: <a href="https://github.com/morfologik/">https://github.com/morfologik/</a> |
| /// </summary> |
| /// <param name="version">Lucene compatibility version</param> |
| /// <param name="dictionary">A prebuilt automaton with inflected and base word forms.</param> |
| public MorfologikAnalyzer(LuceneVersion version, Dictionary dictionary) |
| { |
| this.version = version; |
| this.dictionary = dictionary; |
| } |
| |
| /// <summary> |
| /// Builds an analyzer with the default Morfologik's Polish dictionary. |
| /// </summary> |
| /// <param name="version">Lucene compatibility version</param> |
| public MorfologikAnalyzer(LuceneVersion version) |
| : this(version, new PolishStemmer().Dictionary) |
| { |
| } |
| |
| /// <summary> |
| /// Creates a <see cref="TokenStreamComponents"/> |
| /// which tokenizes all the text in the provided <paramref name="reader"/>. |
| /// </summary> |
| /// <param name="fieldName">Ignored field name.</param> |
| /// <param name="reader">Source of tokens.</param> |
| /// <returns>A <see cref="TokenStreamComponents"/> |
| /// built from a <see cref="StandardTokenizer"/> filtered with |
| /// <see cref="MorfologikFilter"/>.</returns> |
| protected internal override TokenStreamComponents CreateComponents(string fieldName, TextReader reader) |
| { |
| Tokenizer src = new StandardTokenizer(this.version, reader); |
| |
| return new TokenStreamComponents( |
| src, |
| new MorfologikFilter(src, dictionary)); |
| } |
| |
| } |
| } |