01: /*
02: * hgcommons 7
03: * Hammurapi Group Common Library
04: * Copyright (C) 2003 Hammurapi Group
05: *
06: * This program is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Lesser General Public
08: * License as published by the Free Software Foundation; either
09: * version 2 of the License, or (at your option) any later version.
10: *
11: * This program is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * Lesser General Public License for more details.
15: *
16: * You should have received a copy of the GNU Lesser General Public
17: * License along with this library; if not, write to the Free Software
18: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19: *
20: * URL: http://www.hammurapi.biz/hammurapi-biz/ef/xmenu/hammurapi-group/products/products/hgcommons/index.html
21: * e-Mail: support@hammurapi.biz
22: */
23: package biz.hammurapi.sql;
24:
25: import java.sql.ResultSet;
26: import java.sql.SQLException;
27:
28: import biz.hammurapi.convert.CompositeConverter;
29:
30: /**
31: * Projects first column by invoking ResultSet.getObject(1)
32: * @author Pavel Vlasov
33: * @version $Revision: 1.3 $
34: */
35: public class FirstColumnProjector implements Projector {
36:
37: private Class targetClass;
38:
39: public FirstColumnProjector() {
40: // Default constructor
41: }
42:
43: public FirstColumnProjector(Class targetClass) {
44: this .targetClass = targetClass;
45: }
46:
47: public Object project(ResultSet rs) throws SQLException {
48: return targetClass == null ? rs.getObject(1)
49: : CompositeConverter.getDefaultConverter().convert(
50: rs.getObject(1), targetClass, false);
51: }
52: }
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