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 tma@netspace.net.au.
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 2001-2004 (C) Exoffice Technologies Inc. All Rights Reserved.
42 *
43 * $Id: Configuration.java,v 1.2 2004/02/02 03:50:09 tanderson Exp $
44 */
45 package org.exolab.jmscts.provider;
46
47 import java.io.FileReader;
48 import java.io.IOException;
49 import java.io.InputStream;
50 import java.util.ArrayList;
51
52 import org.apache.log4j.Category;
53
54 import org.xml.sax.InputSource;
55
56 import org.exolab.castor.mapping.Mapping;
57 import org.exolab.castor.mapping.MappingException;
58 import org.exolab.castor.xml.Unmarshaller;
59
60 import org.exolab.jmscts.util.ConfigExpander;
61
62
63 /***
64 * The provider configuration
65 *
66 * @version $Revision: 1.2 $ $Date: 2004/02/02 03:50:09 $
67 * @author <a href="mailto:tma@netspace.net.au">Tim Anderson</a>
68 * @see Provider
69 * @see ProviderLoader
70 */
71 public class Configuration {
72
73 /***
74 * The providers
75 */
76 private ArrayList _providers = new ArrayList();
77
78 /***
79 * The logger
80 */
81 private static final Category log =
82 Category.getInstance(Configuration.class);
83
84 /***
85 * The castor mapping
86 */
87 private static final Mapping MAPPING;
88
89 /***
90 * The path to the castor mapping file, as a resource
91 */
92 private static final String MAPPING_PATH =
93 "/org/exolab/jmscts/provider/mapping.xml";
94
95
96 /***
97 * Construct a new <code>Configuration</code>
98 */
99 public Configuration() {
100 }
101
102 /***
103 * Add a provider
104 *
105 * @param provider the provider
106 */
107 public void addProvider(ProviderLoader provider) {
108 _providers.add(provider);
109 }
110
111 /***
112 * Return the providers
113 *
114 * @return the providers
115 */
116 public ArrayList getProviders() {
117 return _providers;
118 }
119
120 /***
121 * Read the configuration
122 *
123 * @param path the file path to the configuration
124 * @return the read configuration
125 * @throws Exception if the configuration can't be read
126 */
127 public static Configuration read(String path) throws Exception {
128 Configuration result = null;
129 Unmarshaller unmarshaller = new Unmarshaller(MAPPING);
130 FileReader reader = new FileReader(path);
131 try {
132 ConfigExpander handler = new ConfigExpander(reader);
133 result = (Configuration) unmarshaller.unmarshal(handler);
134 } finally {
135 if (reader != null) {
136 reader.close();
137 }
138 }
139 return result;
140 }
141
142 static {
143 // load the castor mapping file
144 InputStream stream = Configuration.class.getResourceAsStream(
145 MAPPING_PATH);
146 if (stream == null) {
147 throw new RuntimeException(
148 "Failed to locate mapping file, path=" + MAPPING_PATH);
149 }
150
151 MAPPING = new Mapping();
152
153 try {
154 MAPPING.loadMapping(new InputSource(stream));
155 } catch (IOException exception) {
156 String message = "Failed to load mapping, path=" + MAPPING_PATH;
157 log.error(message, exception);
158 throw new RuntimeException(message);
159 } catch (MappingException exception) {
160 String message = "Failed to load mapping, path=" + MAPPING_PATH;
161 log.error(message, exception);
162 throw new RuntimeException(message);
163 } finally {
164 try {
165 stream.close();
166 } catch (IOException ignore) {
167 // no-op
168 }
169 }
170 }
171
172 }
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