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1 /* ====================================================================
2 * License:
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * 3. The end-user documentation included with the redistribution,
17 * if any, must include the following acknowledgment:
18 * "This product includes software developed by
19 * Robert Half International (http://www.rhi.com/)."
20 * Alternately, this acknowledgment may appear in the software itself,
21 * if and wherever such third-party acknowledgments normally appear.
22 *
23 * 4. The names "Parc", "RHI", and "Robert Half International" must
24 * not be used to endorse or promote products derived from this
25 * software without prior written permission. For written
26 * permission, please contact pete.mckinstry@rhi.com.
27 *
28 * 5. Products derived from this software may not be called "PARC",
29 * nor may "PARC" appear in their name, without prior written
30 * permission of Robert Half International.
31 *
32 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
33 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
34 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
35 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
36 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
37 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
38 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
39 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
40 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
41 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
42 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
43 * SUCH DAMAGE.
44 * ====================================================================
45 *
46 */
47 package com.rhi.architecture.batch;
48
49 import com.rhi.architecture.lang.PropertiesException;
50 import com.rhi.architecture.lang.PropertyUtils;
51 import com.rhi.architecture.resource.InitializationException;
52
53 import java.util.Enumeration;
54 import java.util.Properties;
55
56 /***
57 * ConfigMixin implementation that uses Properties file for configuration.
58 *
59 * @author Vaibhav Ranjangaonkar
60 * @copyright 2002, Robert Half Int'l., Inc. All rights reserved.
61 *
62 * @since 1.0
63 */
64 public class PropertiesConfigMixin implements ConfigMixin
65 {
66 /***
67 * Retrieve property values & append them to the provided
68 * default application properties. This provides an
69 * extensible mechanism for configuration information.
70 *
71 * @param props
72 * @throws InitializationException
73 * @since 1.1
74 */
75 public void loadConfiguration( Properties props )
76 throws InitializationException {
77 String fileName = getPropertyFileName( props );
78 Properties p = null;
79
80 try {
81 p = PropertyUtils.loadProperties( fileName );
82 }
83 catch ( PropertiesException pe ) {
84 throw new InitializationException(
85 "missing properties file : " + fileName );
86 }
87
88 Enumeration entries = p.propertyNames();
89 while ( entries.hasMoreElements() ) {
90 String name = ( String )entries.nextElement();
91 String value = p.getProperty( name );
92
93 props.setProperty( name, value );
94 }
95 }
96
97 /***
98 * Default implementation looks for <application name>.properties
99 * file in classpath. Override this method for changing this logic.
100 * @param p the already loaded configuration properties.
101 * @return The property file name to use.
102 * @throws InitializationException
103 */
104 protected String getPropertyFileName( Properties p )
105 throws InitializationException {
106 String appName = p.getProperty(ApplicationConfig.PROG_NAME);
107 if ( appName == null ) {
108 throw new InitializationException(
109 "Required parameter [" + ApplicationConfig.PROG_NAME +
110 "] missing from configuration" );
111 }
112 return appName + ".properties";
113 }
114
115 }
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