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.fill;
29:
30: import java.util.HashMap;
31: import java.util.Map;
32:
33: import net.sf.jasperreports.engine.JRRuntimeException;
34:
35: /**
36: * @author Teodor Danciu (teodord@users.sourceforge.net)
37: * @version $Id: JRIncrementerFactoryCache.java 1229 2006-04-19 10:27:35Z teodord $
38: */
39: public class JRIncrementerFactoryCache {
40:
41: /**
42: *
43: */
44: private static Map factoriesMap = null;
45:
46: /**
47: *
48: */
49: public static synchronized JRIncrementerFactory getInstance(
50: Class factoryClass) {
51: if (factoriesMap == null) {
52: factoriesMap = new HashMap();
53: }
54:
55: JRIncrementerFactory incrementerFactory = (JRIncrementerFactory) factoriesMap
56: .get(factoryClass.getName());
57:
58: if (incrementerFactory == null) {
59: try {
60: incrementerFactory = (JRIncrementerFactory) factoryClass
61: .newInstance();
62: } catch (InstantiationException e) {
63: throw new JRRuntimeException(e);
64: } catch (IllegalAccessException e) {
65: throw new JRRuntimeException(e);
66: }
67:
68: factoriesMap
69: .put(factoryClass.getName(), incrementerFactory);
70: }
71:
72: return incrementerFactory;
73: }
74:
75: }
|