01: /*
02: * ============================================================================
03: * GNU Lesser General Public License
04: * ============================================================================
05: *
06: * JasperReports - Free Java report-generating library.
07: * Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
08: *
09: * This library is free software; you can redistribute it and/or
10: * modify it under the terms of the GNU Lesser General Public
11: * License as published by the Free Software Foundation; either
12: * version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17: * Lesser General Public License for more details.
18: *
19: * You should have received a copy of the GNU Lesser General Public
20: * License along with this library; if not, write to the Free Software
21: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
22: *
23: * JasperSoft Corporation
24: * 303 Second Street, Suite 450 North
25: * San Francisco, CA 94107
26: * http://www.jaspersoft.com
27: */
28: package net.sf.jasperreports.engine.query;
29:
30: /**
31: * SQL "IN" clause function.
32: *
33: * @author Lucian Chirita (lucianc@users.sourceforge.net)
34: * @version $Id: JRSqlInClause.java 1683 2007-03-29 16:04:15Z lucianc $
35: * @see #apply(JRClauseTokens, JRQueryClauseContext)
36: */
37: public class JRSqlInClause extends JRSqlAbstractInClause {
38:
39: protected static final String OPERATOR_IN = "IN";
40:
41: protected static final JRSqlInClause singleton = new JRSqlInClause();
42:
43: /**
44: * Returns the singleton function instance.
45: *
46: * @return the singleton function instance
47: */
48: public static JRSqlInClause instance() {
49: return singleton;
50: }
51:
52: protected void appendInOperator(StringBuffer sBuffer) {
53: sBuffer.append(OPERATOR_IN);
54: }
55:
56: }
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