| using Lucene.Net.Analysis.Util; |
| using System; |
| using System.Collections.Generic; |
| using System.Text.RegularExpressions; |
| |
| namespace Lucene.Net.Analysis.Miscellaneous |
| { |
| /* |
| * 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> |
| /// Factory for <see cref="StemmerOverrideFilter"/>. |
| /// <code> |
| /// <fieldType name="text_dicstem" class="solr.TextField" positionIncrementGap="100"> |
| /// <analyzer> |
| /// <tokenizer class="solr.WhitespaceTokenizerFactory"/> |
| /// <filter class="solr.StemmerOverrideFilterFactory" dictionary="dictionary.txt" ignoreCase="false"/> |
| /// </analyzer> |
| /// </fieldType></code> |
| /// </summary> |
| public class StemmerOverrideFilterFactory : TokenFilterFactory, IResourceLoaderAware |
| { |
| private StemmerOverrideFilter.StemmerOverrideMap dictionary; |
| private readonly string dictionaryFiles; |
| private readonly bool ignoreCase; |
| |
| /// <summary> |
| /// Creates a new <see cref="StemmerOverrideFilterFactory"/> </summary> |
| public StemmerOverrideFilterFactory(IDictionary<string, string> args) |
| : base(args) |
| { |
| dictionaryFiles = Get(args, "dictionary"); |
| ignoreCase = GetBoolean(args, "ignoreCase", false); |
| if (args.Count > 0) |
| { |
| throw new ArgumentException(string.Format(J2N.Text.StringFormatter.CurrentCulture, "Unknown parameters: {0}", args)); |
| } |
| } |
| |
| public virtual void Inform(IResourceLoader loader) |
| { |
| if (dictionaryFiles != null) |
| { |
| AssureMatchVersion(); |
| IList<string> files = SplitFileNames(dictionaryFiles); |
| if (files.Count > 0) |
| { |
| StemmerOverrideFilter.Builder builder = new StemmerOverrideFilter.Builder(ignoreCase); |
| foreach (string file in files) |
| { |
| IList<string> list = GetLines(loader, file.Trim()); |
| foreach (string line in list) |
| { |
| string[] mapping = new Regex("\t").Split(line, 2); |
| builder.Add(mapping[0], mapping[1]); |
| } |
| } |
| dictionary = builder.Build(); |
| } |
| } |
| } |
| |
| public virtual bool IgnoreCase => ignoreCase; |
| |
| public override TokenStream Create(TokenStream input) |
| { |
| return dictionary == null ? input : new StemmerOverrideFilter(input, dictionary); |
| } |
| } |
| } |