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 3048 2007-07-28 18:02:42Z tmorgner $ 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 }