| // Lucene version compatibility level 8.2.0 |
| using Lucene.Net.Analysis.OpenNlp.Tools; |
| using Lucene.Net.Analysis.Util; |
| using System; |
| using System.Collections.Generic; |
| using System.IO; |
| |
| namespace Lucene.Net.Analysis.OpenNlp |
| { |
| /* |
| * 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="OpenNLPChunkerFilter"/>. |
| /// <code> |
| /// <fieldType name="text_opennlp_chunked" class="solr.TextField" positionIncrementGap="100"> |
| /// <analyzer> |
| /// <tokenizer class="solr.OpenNLPTokenizerFactory" sentenceModel="filename" tokenizerModel="filename"/> |
| /// <filter class="solr.OpenNLPPOSFilterFactory" posTaggerModel="filename"/> |
| /// <filter class="solr.OpenNLPChunkerFilterFactory" chunkerModel="filename"/> |
| /// </analyzer> |
| /// </fieldType> |
| /// </code> |
| /// </summary> |
| /// <since>7.3.0</since> |
| public class OpenNLPChunkerFilterFactory : TokenFilterFactory, IResourceLoaderAware |
| { |
| public const string CHUNKER_MODEL = "chunkerModel"; |
| |
| private readonly string chunkerModelFile; |
| |
| public OpenNLPChunkerFilterFactory(IDictionary<string, string> args) |
| : base(args) |
| { |
| chunkerModelFile = Get(args, CHUNKER_MODEL); |
| if (args.Count > 0) |
| { |
| throw new ArgumentException("Unknown parameters: " + args); |
| } |
| } |
| |
| public override TokenStream Create(TokenStream input) |
| { |
| try |
| { |
| NLPChunkerOp chunkerOp = null; |
| |
| if (chunkerModelFile != null) |
| { |
| chunkerOp = OpenNLPOpsFactory.GetChunker(chunkerModelFile); |
| } |
| return new OpenNLPChunkerFilter(input, chunkerOp); |
| } |
| catch (IOException e) |
| { |
| throw new ArgumentException(e.ToString(), e); |
| } |
| } |
| |
| public virtual void Inform(IResourceLoader loader) |
| { |
| try |
| { |
| // load and register read-only models in cache with file/resource names |
| if (chunkerModelFile != null) |
| { |
| OpenNLPOpsFactory.GetChunkerModel(chunkerModelFile, loader); |
| } |
| } |
| catch (IOException e) |
| { |
| throw new ArgumentException(e.ToString(), e); |
| } |
| } |
| } |
| } |