001 /**
002 * ========================================
003 * JFreeReport : a free Java report library
004 * ========================================
005 *
006 * Project Info: http://reporting.pentaho.org/
007 *
008 * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
009 *
010 * This library is free software; you can redistribute it and/or modify it under the terms
011 * of the GNU Lesser General Public License as published by the Free Software Foundation;
012 * either version 2.1 of the License, or (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016 * See the GNU Lesser General Public License for more details.
017 *
018 * You should have received a copy of the GNU Lesser General Public License along with this
019 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020 * Boston, MA 02111-1307, USA.
021 *
022 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023 * in the United States and other countries.]
024 *
025 * ------------
026 * $Id: DriverConnectionProvider.java,v 1.3 2007/04/01 18:49:26 taqua Exp $
027 * ------------
028 * (C) Copyright 2000-2005, by Object Refinery Limited.
029 * (C) Copyright 2005-2007, by Pentaho Corporation.
030 */
031 package org.jfree.report.modules.data.sql;
032
033 import java.sql.Connection;
034 import java.sql.DriverManager;
035 import java.sql.SQLException;
036 import java.util.Properties;
037
038 /**
039 * Creation-Date: 07.04.2006, 15:04:26
040 *
041 * @author Thomas Morgner
042 */
043 public class DriverConnectionProvider implements ConnectionProvider
044 {
045 private Properties properties;
046 private String url;
047 private String driver;
048 private transient Connection connection;
049
050 public DriverConnectionProvider()
051 {
052 this.properties = new Properties();
053 }
054
055 public String getProperty(final String key)
056 {
057 return properties.getProperty(key);
058 }
059
060 public Object setProperty(final String key, final String value)
061 {
062 return properties.setProperty(key, value);
063 }
064
065 public String getUrl()
066 {
067 return url;
068 }
069
070 public void setUrl(final String url)
071 {
072 this.url = url;
073 }
074
075 public String getDriver()
076 {
077 return driver;
078 }
079
080 public void setDriver(final String driver)
081 {
082 this.driver = driver;
083 }
084
085 public Connection getConnection() throws SQLException
086 {
087 if (url == null)
088 {
089 throw new NullPointerException("URL must not be null when connecting");
090 }
091
092 if (connection == null)
093 {
094 try
095 {
096 if (driver != null)
097 {
098 Class.forName(driver);
099 }
100 }
101 catch(Exception e)
102 {
103 throw new SQLException("Unable to load the driver", e.getMessage());
104 }
105
106 connection = DriverManager.getConnection(url, properties);
107 }
108 return connection;
109 }
110 }