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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