1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * This library is free software; you can redistribute it and/or modify it under
5    * the terms of the GNU Lesser General Public License as published by the Free
6    * Software Foundation; either version 2.1 of the License, or (at your option)
7    * any later version.
8    *
9    * This library is distributed in the hope that it will be useful, but WITHOUT
10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11   * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12   * details.
13   */
14  
15  package com.liferay.portal.search.lucene;
16  
17  import com.liferay.portal.kernel.search.Query;
18  import com.liferay.portal.kernel.search.StringQueryImpl;
19  import com.liferay.portal.kernel.util.StringPool;
20  
21  import org.apache.lucene.queryParser.ParseException;
22  import org.apache.lucene.queryParser.QueryParser;
23  
24  /**
25   * <a href="QueryTranslator.java.html"><b><i>View Source</i></b></a>
26   *
27   * @author Brian Wing Shun Chan
28   */
29  public class QueryTranslator {
30  
31      public static org.apache.lucene.search.Query translate(Query query)
32          throws ParseException {
33  
34          if (query instanceof BooleanQueryImpl) {
35              return ((BooleanQueryImpl)query).getBooleanQuery();
36          }
37          else if (query instanceof LuceneQueryImpl) {
38              return ((LuceneQueryImpl)query).getQuery();
39          }
40          else if (query instanceof StringQueryImpl) {
41              QueryParser parser = new QueryParser(
42                  StringPool.BLANK, LuceneHelperUtil.getAnalyzer());
43  
44              return parser.parse(query.toString());
45          }
46          else if (query instanceof TermQueryImpl) {
47              return ((TermQueryImpl)query).getTermQuery();
48          }
49          else {
50              return null;
51          }
52      }
53  
54  }