1 /***
2 * Redistribution and use of this software and associated documentation
3 * ("Software"), with or without modification, are permitted provided
4 * that the following conditions are met:
5 *
6 * 1. Redistributions of source code must retain copyright
7 * statements and notices. Redistributions must also contain a
8 * copy of this document.
9 *
10 * 2. Redistributions in binary form must reproduce the
11 * above copyright notice, this list of conditions and the
12 * following disclaimer in the documentation and/or other
13 * materials provided with the distribution.
14 *
15 * 3. The name "Exolab" must not be used to endorse or promote
16 * products derived from this Software without prior written
17 * permission of Exoffice Technologies. For written permission,
18 * please contact info@exolab.org.
19 *
20 * 4. Products derived from this Software may not be called "Exolab"
21 * nor may "Exolab" appear in their names without prior written
22 * permission of Exoffice Technologies. Exolab is a registered
23 * trademark of Exoffice Technologies.
24 *
25 * 5. Due credit should be given to the Exolab Project
26 * (http://www.exolab.org/).
27 *
28 * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
29 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
30 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
31 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
32 * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
33 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
34 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
35 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
37 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
39 * OF THE POSSIBILITY OF SUCH DAMAGE.
40 *
41 * Copyright 2000-2001,2003 (C) Exoffice Technologies Inc. All Rights Reserved.
42 *
43 * $Id: ConfigurationLoader.java,v 1.9 2003/10/29 04:58:32 tanderson Exp $
44 */
45 package org.exolab.jms.config;
46
47 import java.io.FileReader;
48 import java.io.IOException;
49 import java.io.InputStream;
50 import java.io.InputStreamReader;
51
52 import org.exolab.castor.xml.MarshalException;
53 import org.exolab.castor.xml.Unmarshaller;
54 import org.exolab.castor.xml.ValidationException;
55 import org.exolab.jms.config.types.SchemeType;
56
57
58 /***
59 * The ConfigurationLoader loads a {@link Configuration} document and populates
60 * unset items with those provided by <code>DefaultConfiguration</code>
61 *
62 * @version $Revision: 1.9 $ $Date: 2003/10/29 04:58:32 $
63 * @author <a href="mailto:tima@intalio.com">Tim Anderson</a>
64 * @see Configuration
65 */
66 public class ConfigurationLoader {
67
68 /***
69 * The default configuration path as a resource
70 */
71 private static final String DEFAULT_CONFIG =
72 "/org/exolab/jms/config/openjms_defaults.xml";
73
74 public ConfigurationLoader() {
75 }
76
77 /***
78 * Load the configuraiton information from the specified file and
79 * return it.
80 *
81 * @param path the path to the file
82 * @return the configuration file
83 * @throws IOException
84 * @throws MarshalException
85 * @throws ValidationException
86 */
87 public Configuration load(String path)
88 throws IOException, MarshalException, ValidationException {
89
90 Configuration result = null;
91 FileReader reader = new FileReader(path);
92 try {
93 Unmarshaller stream = new Unmarshaller(Configuration.class);
94 AttributeExpander handler = new AttributeExpander(reader);
95 result = (Configuration) stream.unmarshal(handler);
96 } finally {
97 reader.close();
98 }
99 return load(result);
100 }
101
102 public Configuration load(Configuration config)
103 throws IOException, MarshalException, ValidationException {
104 DefaultConfiguration defaults = getDefaults();
105
106 if (config.getServerConfiguration() == null) {
107 config.setServerConfiguration(defaults.getServerConfiguration());
108 }
109 if (config.getConnectors() == null) {
110 config.setConnectors(defaults.getConnectors());
111 }
112 if (config.getLoggerConfiguration() == null) {
113 config.setLoggerConfiguration(defaults.getLoggerConfiguration());
114 }
115 if (config.getTcpConfiguration() == null) {
116 config.setTcpConfiguration(defaults.getTcpConfiguration());
117 }
118 if (config.getTcpsConfiguration() == null) {
119 config.setTcpsConfiguration(defaults.getTcpsConfiguration());
120 }
121 if (config.getRmiConfiguration() == null) {
122 config.setRmiConfiguration(defaults.getRmiConfiguration());
123 }
124 if (config.getHttpConfiguration() == null) {
125 config.setHttpConfiguration(defaults.getHttpConfiguration());
126 }
127 if (config.getHttpsConfiguration() == null) {
128 config.setHttpsConfiguration(defaults.getHttpsConfiguration());
129 }
130 if (config.getMessageManagerConfiguration() == null) {
131 config.setMessageManagerConfiguration(
132 defaults.getMessageManagerConfiguration());
133 }
134 if (config.getSchedulerConfiguration() == null) {
135 config.setSchedulerConfiguration(
136 defaults.getSchedulerConfiguration());
137 }
138 if (config.getGarbageCollectionConfiguration() == null) {
139 config.setGarbageCollectionConfiguration(
140 defaults.getGarbageCollectionConfiguration());
141 }
142 if (config.getSecurityConfiguration() == null) {
143 config.setSecurityConfiguration(
144 defaults.getSecurityConfiguration());
145 }
146 if (config.getServerConfiguration().getEmbeddedJNDI()) {
147
148
149 config.setJndiConfiguration(
150 JndiConfigurationFactory.create(config));
151 } else if (config.getJndiConfiguration() == null) {
152 throw new ValidationException(
153 "JndiConfiguration must be provided when " +
154 "ServerConfiguation/embeddedJNDI is true");
155 }
156 return config;
157 }
158
159 private DefaultConfiguration getDefaults()
160 throws IOException, MarshalException, ValidationException {
161
162 DefaultConfiguration result = null;
163 InputStream source = getClass().getResourceAsStream(DEFAULT_CONFIG);
164 if (source == null) {
165 throw new IOException(
166 "Failed to find default configuration: " + DEFAULT_CONFIG);
167 }
168 try {
169 Unmarshaller stream = new Unmarshaller(DefaultConfiguration.class);
170 AttributeExpander handler = new AttributeExpander(
171 new InputStreamReader(source));
172 result = (DefaultConfiguration) stream.unmarshal(handler);
173 } finally {
174 try {
175 source.close();
176 } catch (IOException ignore) {
177 }
178 }
179 return result;
180 }
181
182 }