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1: /** 2: * ======================================== 3: * JFreeReport : a free Java report library 4: * ======================================== 5: * 6: * Project Info: http://reporting.pentaho.org/ 7: * 8: * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors. 9: * 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 2725 2007-04-01 18:49:29Z taqua $ 27: * ------------ 28: * (C) Copyright 2000-2005, by Object Refinery Limited. 29: * (C) Copyright 2005-2007, by Pentaho Corporation. 30: */ 31: package org.jfree.report.modules.data.sql; 32: 33: import java.sql.Connection; 34: import java.sql.DriverManager; 35: import java.sql.SQLException; 36: import java.util.Properties; 37: 38: /** 39: * Creation-Date: 07.04.2006, 15:04:26 40: * 41: * @author Thomas Morgner 42: */ 43: public class DriverConnectionProvider implements ConnectionProvider 44: { 45: private Properties properties; 46: private String url; 47: private String driver; 48: private transient Connection connection; 49: 50: public DriverConnectionProvider() 51: { 52: this.properties = new Properties(); 53: } 54: 55: public String getProperty(final String key) 56: { 57: return properties.getProperty(key); 58: } 59: 60: public Object setProperty(final String key, final String value) 61: { 62: return properties.setProperty(key, value); 63: } 64: 65: public String getUrl() 66: { 67: return url; 68: } 69: 70: public void setUrl(final String url) 71: { 72: this.url = url; 73: } 74: 75: public String getDriver() 76: { 77: return driver; 78: } 79: 80: public void setDriver(final String driver) 81: { 82: this.driver = driver; 83: } 84: 85: public Connection getConnection() throws SQLException 86: { 87: if (url == null) 88: { 89: throw new NullPointerException("URL must not be null when connecting"); 90: } 91: 92: if (connection == null) 93: { 94: try 95: { 96: if (driver != null) 97: { 98: Class.forName(driver); 99: } 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: }