01: /******************************************************************************
02: * JBoss, a division of Red Hat *
03: * Copyright 2006, Red Hat Middleware, LLC, and individual *
04: * contributors as indicated by the @authors tag. See the *
05: * copyright.txt in the distribution for a full listing of *
06: * individual contributors. *
07: * *
08: * This is free software; you can redistribute it and/or modify it *
09: * under the terms of the GNU Lesser General Public License as *
10: * published by the Free Software Foundation; either version 2.1 of *
11: * the License, or (at your option) any later version. *
12: * *
13: * This software is distributed in the hope that it will be useful, *
14: * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
16: * Lesser General Public License for more details. *
17: * *
18: * You should have received a copy of the GNU Lesser General Public *
19: * License along with this software; if not, write to the Free *
20: * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA *
21: * 02110-1301 USA, or see the FSF site: http://www.fsf.org. *
22: ******************************************************************************/package org.jboss.portal.search.impl.jcr;
23:
24: import org.apache.lucene.search.BooleanClause;
25: import org.jboss.portal.search.FederatedQuery;
26: import org.jboss.portal.search.Query;
27: import org.jboss.portal.search.QueryConversionException;
28: import org.jboss.portal.search.impl.AbstractQueryConverter;
29:
30: /**
31: * @author <a href="mailto:theute@jboss.org">Thomas Heute</a>
32: * @version $Revision: 8784 $
33: */
34: public class JCRQueryConverter extends AbstractQueryConverter {
35:
36: public Query convert(FederatedQuery query) {
37: if (query == null) {
38: return null;
39: }
40: StringBuffer result = new StringBuffer();
41: result.append("//*[");
42: try {
43: if (super .convert(query) != null) {
44: result.append(((JCRQuery) super .convert(query))
45: .getJcrQuery());
46: }
47:
48: } catch (QueryConversionException e) {
49: e.printStackTrace();
50: }
51: result.append("]");
52: return new JCRQuery(result.toString());
53: }
54:
55: public Query convertTermQuery(
56: org.apache.lucene.search.TermQuery query) {
57: StringBuffer result = new StringBuffer();
58:
59: org.apache.lucene.index.Term term = query.getTerm();
60: result.append("jcr:contains(., '" + term.text() + "')");
61:
62: return new JCRQuery(result.toString());
63: }
64:
65: public Query convertBooleanQuery(
66: org.apache.lucene.search.BooleanQuery query)
67: throws QueryConversionException {
68: BooleanClause[] clauses = query.getClauses();
69:
70: StringBuffer result = new StringBuffer();
71:
72: boolean first = true;
73: for (int i = 0; i < clauses.length; i++) {
74: BooleanClause clause = clauses[i];
75: if (!first) {
76: result.append(", ");
77: }
78: if (!clause.prohibited) {
79: result.append(((JCRQuery) convert(clause.query))
80: .getJcrQuery());
81: first = false;
82: }
83: }
84: return new JCRQuery(result.toString());
85: }
86:
87: }
|