| /* |
| * 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. |
| */ |
| |
| package org.apache.lucene.analysis.opennlp; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| import org.apache.lucene.analysis.TokenizerFactory; |
| import org.apache.lucene.analysis.opennlp.tools.NLPSentenceDetectorOp; |
| import org.apache.lucene.analysis.opennlp.tools.NLPTokenizerOp; |
| import org.apache.lucene.analysis.opennlp.tools.OpenNLPOpsFactory; |
| import org.apache.lucene.util.AttributeFactory; |
| import org.apache.lucene.util.ResourceLoader; |
| import org.apache.lucene.util.ResourceLoaderAware; |
| |
| /** |
| * Factory for {@link OpenNLPTokenizer}. |
| * |
| * <pre class="prettyprint"> |
| * <fieldType name="text_opennlp" class="solr.TextField" positionIncrementGap="100" |
| * <analyzer> |
| * <tokenizer class="solr.OpenNLPTokenizerFactory" sentenceModel="filename" tokenizerModel="filename"/> |
| * </analyzer> |
| * </fieldType></pre> |
| * |
| * @since 7.3.0 |
| * @lucene.spi {@value #NAME} |
| */ |
| public class OpenNLPTokenizerFactory extends TokenizerFactory implements ResourceLoaderAware { |
| |
| /** SPI name */ |
| public static final String NAME = "openNlp"; |
| |
| public static final String SENTENCE_MODEL = "sentenceModel"; |
| public static final String TOKENIZER_MODEL = "tokenizerModel"; |
| |
| private final String sentenceModelFile; |
| private final String tokenizerModelFile; |
| |
| public OpenNLPTokenizerFactory(Map<String, String> args) { |
| super(args); |
| sentenceModelFile = require(args, SENTENCE_MODEL); |
| tokenizerModelFile = require(args, TOKENIZER_MODEL); |
| if (!args.isEmpty()) { |
| throw new IllegalArgumentException("Unknown parameters: " + args); |
| } |
| } |
| |
| /** Default ctor for compatibility with SPI */ |
| public OpenNLPTokenizerFactory() { |
| throw defaultCtorException(); |
| } |
| |
| @Override |
| public OpenNLPTokenizer create(AttributeFactory factory) { |
| try { |
| NLPSentenceDetectorOp sentenceOp = OpenNLPOpsFactory.getSentenceDetector(sentenceModelFile); |
| NLPTokenizerOp tokenizerOp = OpenNLPOpsFactory.getTokenizer(tokenizerModelFile); |
| return new OpenNLPTokenizer(factory, sentenceOp, tokenizerOp); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| @Override |
| public void inform(ResourceLoader loader) throws IOException { |
| // register models in cache with file/resource names |
| if (sentenceModelFile != null) { |
| OpenNLPOpsFactory.getSentenceModel(sentenceModelFile, loader); |
| } |
| if (tokenizerModelFile != null) { |
| OpenNLPOpsFactory.getTokenizerModel(tokenizerModelFile, loader); |
| } |
| } |
| } |