01: /**
02: * ========================================
03: * JFreeReport : a free Java report library
04: * ========================================
05: *
06: * Project Info: http://reporting.pentaho.org/
07: *
08: * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
09: *
10: * This library is free software; you can redistribute it and/or modify it under the terms
11: * of the GNU Lesser General Public License as published by the Free Software Foundation;
12: * either 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, but WITHOUT ANY WARRANTY;
15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16: * See the GNU Lesser General Public License for more details.
17: *
18: * You should have received a copy of the GNU Lesser General Public License along with this
19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20: * Boston, MA 02111-1307, USA.
21: *
22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
23: * in the United States and other countries.]
24: *
25: * ------------
26: * $Id: DriverConnectionProvider.java 3048 2007-07-28 18:02:42Z tmorgner $
27: * ------------
28: * (C) Copyright 2000-2005, by Object Refinery Limited.
29: * (C) Copyright 2005-2007, by Pentaho Corporation.
30: */package org.jfree.report.modules.data.sql;
31:
32: import java.sql.Connection;
33: import java.sql.DriverManager;
34: import java.sql.SQLException;
35: import java.util.Properties;
36:
37: /**
38: * Creation-Date: 07.04.2006, 15:04:26
39: *
40: * @author Thomas Morgner
41: */
42: public class DriverConnectionProvider implements ConnectionProvider {
43: private Properties properties;
44: private String url;
45: private String driver;
46: private transient Connection connection;
47:
48: public DriverConnectionProvider() {
49: this .properties = new Properties();
50: }
51:
52: public String getProperty(final String key) {
53: return properties.getProperty(key);
54: }
55:
56: public Object setProperty(final String key, final String value) {
57: return properties.setProperty(key, value);
58: }
59:
60: public String getUrl() {
61: return url;
62: }
63:
64: public void setUrl(final String url) {
65: this .url = url;
66: }
67:
68: public String getDriver() {
69: return driver;
70: }
71:
72: public void setDriver(final String driver) {
73: this .driver = driver;
74: }
75:
76: public Connection getConnection() throws SQLException {
77: if (url == null) {
78: throw new NullPointerException(
79: "URL must not be null when connecting");
80: }
81:
82: if (connection == null) {
83: try {
84: if (driver != null) {
85: Class.forName(driver);
86: }
87: } catch (Exception e) {
88: throw new SQLException("Unable to load the driver", e
89: .getMessage());
90: }
91:
92: connection = DriverManager.getConnection(url, properties);
93: }
94: return connection;
95: }
96: }
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