| using Lucene.Net.Analysis.Util; |
| using System; |
| using System.Collections.Generic; |
| using JCG = J2N.Collections.Generic; |
| |
| namespace Lucene.Net.Analysis.Ja |
| { |
| /* |
| * 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="JapanesePartOfSpeechStopFilter"/>. |
| /// <code> |
| /// <fieldType name="text_ja" class="solr.TextField"> |
| /// <analyzer> |
| /// <tokenizer class="solr.JapaneseTokenizerFactory"/> |
| /// <filter class="solr.JapanesePartOfSpeechStopFilterFactory" |
| /// tags="stopTags.txt" |
| /// enablePositionIncrements="true"/> |
| /// </analyzer> |
| /// </fieldType> |
| /// </code> |
| /// </summary> |
| public class JapanesePartOfSpeechStopFilterFactory : TokenFilterFactory, IResourceLoaderAware |
| { |
| private readonly string stopTagFiles; |
| private readonly bool enablePositionIncrements; |
| private ISet<string> stopTags; |
| |
| /// <summary>Creates a new JapanesePartOfSpeechStopFilterFactory</summary> |
| public JapanesePartOfSpeechStopFilterFactory(IDictionary<string, string> args) |
| : base(args) |
| { |
| stopTagFiles = Get(args, "tags"); |
| enablePositionIncrements = GetBoolean(args, "enablePositionIncrements", true); |
| if (args.Count > 0) |
| { |
| throw new ArgumentException(string.Format(J2N.Text.StringFormatter.CurrentCulture, "Unknown parameters: {0}", args)); |
| } |
| } |
| |
| public virtual void Inform(IResourceLoader loader) |
| { |
| stopTags = null; |
| CharArraySet cas = GetWordSet(loader, stopTagFiles, false); |
| if (cas != null) |
| { |
| stopTags = new JCG.HashSet<string>(); |
| foreach (string element in cas) |
| { |
| stopTags.Add(element); |
| } |
| } |
| } |
| |
| public override TokenStream Create(TokenStream stream) |
| { |
| // if stoptags is null, it means the file is empty |
| if (stopTags != null) |
| { |
| #pragma warning disable 612, 618 |
| TokenStream filter = new JapanesePartOfSpeechStopFilter(m_luceneMatchVersion, enablePositionIncrements, stream, stopTags); |
| #pragma warning restore 612, 618 |
| return filter; |
| } |
| else |
| { |
| return stream; |
| } |
| } |
| } |
| } |