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1 /* 2 * The Apache Software License, Version 1.1 3 * 4 * Copyright (c) 1999 The Apache Software Foundation. All rights 5 * reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 19 * 3. The end-user documentation included with the redistribution, if 20 * any, must include the following acknowlegement: 21 * "This product includes software developed by the 22 * Apache Software Foundation (http://www.apache.org/)." 23 * Alternately, this acknowlegement may appear in the software itself, 24 * if and wherever such third-party acknowlegements normally appear. 25 * 26 * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software 27 * Foundation" must not be used to endorse or promote products derived 28 * from this software without prior written permission. For written 29 * permission, please contact apache@apache.org. 30 * 31 * 5. Products derived from this software may not be called "Apache" 32 * nor may "Apache" appear in their names without prior written 33 * permission of the Apache Group. 34 * 35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 38 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 46 * SUCH DAMAGE. 47 * ==================================================================== 48 * 49 * This software consists of voluntary contributions made by many 50 * individuals on behalf of the Apache Software Foundation. For more 51 * information on the Apache Software Foundation, please see 52 * <http://www.apache.org/>;. 53 * 54 */ 55 56 package org.apache.commons.jelly.tags.sql; 57 58 import java.util.*; 59 import javax.sql.DataSource; 60 import org.apache.commons.jelly.JellyContext; 61 import org.apache.commons.jelly.JellyException; 62 import org.apache.commons.jelly.TagSupport; 63 import org.apache.commons.jelly.XMLOutput; 64 import org.apache.commons.jelly.tags.Resources; 65 66 import org.apache.commons.logging.Log; 67 import org.apache.commons.logging.LogFactory; 68 69 /*** 70 * <p>Tag handler for <SetDataSource> in JSTL, used to create 71 * a simple DataSource for prototyping.</p> 72 * 73 * @author Hans Bergsten 74 * @author Justyna Horwat 75 */ 76 public class SetDataSourceTag extends TagSupport { 77 78 /*** The Log to which logging calls will be made. */ 79 private static final Log log = LogFactory.getLog(SetDataSourceTag.class); 80 81 protected Object dataSource; 82 protected boolean dataSourceSpecified; 83 protected String jdbcURL; 84 protected String driverClassName; 85 protected String userName; 86 protected String password; 87 88 private String scope = "page"; 89 private String var; 90 91 //********************************************************************** 92 // Constructor and initialization 93 94 public SetDataSourceTag() { 95 } 96 97 //********************************************************************* 98 // Accessor methods 99 100 /** 101 * Sets the scope of the variable to hold the 102 * result. 103 * 104 */ 105 public void setScope(String scope) { 106 this.scope = scope; 107 } 108 109 public void setVar(String var) { 110 this.var = var; 111 } 112 113 public void setDataSource(Object dataSource) { 114 this.dataSource = dataSource; 115 this.dataSourceSpecified = true; 116 } 117 118 public void setDriver(String driverClassName) { 119 this.driverClassName = driverClassName; 120 } 121 122 public void setUrl(String jdbcURL) { 123 this.jdbcURL = jdbcURL; 124 } 125 126 public void setUser(String userName) { 127 this.userName = userName; 128 } 129 130 public void setPassword(String password) { 131 this.password = password; 132 } 133 134 //********************************************************************** 135 // Tag logic 136 137 public void doTag(XMLOutput output) throws Exception { 138 DataSource ds = null; 139 140 if (dataSource != null) { 141 ds = DataSourceUtil.getDataSource(dataSource, context); 142 } 143 else { 144 if (dataSourceSpecified) { 145 throw new JellyException(Resources.getMessage("SQL_DATASOURCE_NULL")); 146 } 147 148 DataSourceWrapper dsw = new DataSourceWrapper(); 149 try { 150 // set driver class iff provided by the tag 151 if (driverClassName != null) { 152 dsw.setDriverClassName(driverClassName); 153 } 154 } 155 catch (Exception e) { 156 log.error( "Could not load driver class: " + e, e ); 157 throw new JellyException( 158 Resources.getMessage("DRIVER_INVALID_CLASS", e.getMessage())); 159 } 160 dsw.setJdbcURL(jdbcURL); 161 dsw.setUserName(userName); 162 dsw.setPassword(password); 163 ds = (DataSource) dsw; 164 } 165 166 if (var != null) { 167 context.setVariable(var, ds); 168 } 169 else { 170 context.setVariable("org.apache.commons.jelly.sql.DataSource", ds); 171 } 172 } 173 }

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