| /* |
| * 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.solr.analysis; |
| |
| import java.util.Arrays; |
| import java.util.Map; |
| |
| import org.apache.lucene.analysis.MockTokenFilter; |
| import org.apache.lucene.analysis.TokenStream; |
| import org.apache.lucene.analysis.util.TokenFilterFactory; |
| import org.apache.lucene.util.automaton.CharacterRunAutomaton; |
| import org.apache.lucene.util.automaton.RegExp; |
| |
| /** |
| * Factory for {@link MockTokenFilter} for testing purposes. |
| */ |
| public class MockTokenFilterFactory extends TokenFilterFactory { |
| final CharacterRunAutomaton filter; |
| |
| /** Creates a new MockTokenizerFactory */ |
| public MockTokenFilterFactory(Map<String, String> args) { |
| super(args); |
| String stopset = get(args, "stopset", Arrays.asList("english", "empty"), null, false); |
| String stopregex = get(args, "stopregex"); |
| if (null != stopset) { |
| if (null != stopregex) { |
| throw new IllegalArgumentException("Parameters stopset and stopregex cannot both be specified."); |
| } |
| if ("english".equalsIgnoreCase(stopset)) { |
| filter = MockTokenFilter.ENGLISH_STOPSET; |
| } else { // must be "empty" |
| filter = MockTokenFilter.EMPTY_STOPSET; |
| } |
| } else if (null != stopregex) { |
| RegExp regex = new RegExp(stopregex); |
| filter = new CharacterRunAutomaton(regex.toAutomaton()); |
| } else { |
| throw new IllegalArgumentException |
| ("Configuration Error: either the 'stopset' or the 'stopregex' parameter must be specified."); |
| } |
| if (!args.isEmpty()) { |
| throw new IllegalArgumentException("Unknown parameters: " + args); |
| } |
| } |
| |
| @Override |
| public MockTokenFilter create(TokenStream stream) { |
| return new MockTokenFilter(stream, filter); |
| } |
| } |