| /* |
| * 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.miscellaneous; |
| import org.apache.lucene.analysis.TokenStream; |
| import org.apache.lucene.analysis.tokenattributes.CharTermAttribute; |
| import org.apache.lucene.analysis.tokenattributes.KeywordAttribute; |
| import org.apache.lucene.analysis.CharArraySet; |
| |
| /** |
| * Marks terms as keywords via the {@link KeywordAttribute}. Each token |
| * contained in the provided set is marked as a keyword by setting |
| * {@link KeywordAttribute#setKeyword(boolean)} to <code>true</code>. |
| */ |
| public final class SetKeywordMarkerFilter extends KeywordMarkerFilter { |
| private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class); |
| private final CharArraySet keywordSet; |
| |
| /** |
| * Create a new KeywordSetMarkerFilter, that marks the current token as a |
| * keyword if the tokens term buffer is contained in the given set via the |
| * {@link KeywordAttribute}. |
| * |
| * @param in |
| * TokenStream to filter |
| * @param keywordSet |
| * the keywords set to lookup the current termbuffer |
| */ |
| public SetKeywordMarkerFilter(final TokenStream in, final CharArraySet keywordSet) { |
| super(in); |
| this.keywordSet = keywordSet; |
| } |
| |
| @Override |
| protected boolean isKeyword() { |
| return keywordSet.contains(termAtt.buffer(), 0, termAtt.length()); |
| } |
| |
| } |