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Java > Open Source Codes > com > sun > org > apache > xerces > internal > impl > xs > XSMessageFormatter


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  *
5  * Copyright (c) 2001, 2002 The Apache Software Foundation. All rights
6  * reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in
17  * the documentation and/or other materials provided with the
18  * distribution.
19  *
20  * 3. The end-user documentation included with the redistribution,
21  * if any, must include the following acknowledgment:
22  * "This product includes software developed by the
23  * Apache Software Foundation (http://www.apache.org/)."
24  * Alternately, this acknowledgment may appear in the software itself,
25  * if and wherever such third-party acknowledgments normally appear.
26  *
27  * 4. The names "Xerces" and "Apache Software Foundation" must
28  * not be used to endorse or promote products derived from this
29  * software without prior written permission. For written
30  * permission, please contact apache@apache.org.
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32  * 5. Products derived from this software may not be called "Apache",
33  * nor may "Apache" appear in their name, without prior written
34  * permission of the Apache Software Foundation.
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36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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40  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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44  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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47  * SUCH DAMAGE.
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49  *
50  * This software consists of voluntary contributions made by many
51  * individuals on behalf of the Apache Software Foundation and was
52  * originally based on software copyright (c) 2001, International
53  * Business Machines, Inc., http://www.apache.org. For more
54  * information on the Apache Software Foundation, please see
55  * <http://www.apache.org/>.
56  */
57
58 package com.sun.org.apache.xerces.internal.impl.xs;
59
60 import java.util.Locale JavaDoc;
61 import java.util.MissingResourceException JavaDoc;
62 import java.util.ResourceBundle JavaDoc;
63 import java.util.PropertyResourceBundle JavaDoc;
64 import com.sun.org.apache.xerces.internal.util.MessageFormatter;
65
66
67 /**
68  * SchemaMessageProvider implements an XMLMessageProvider that
69  * provides localizable error messages for the W3C XML Schema Language
70  *
71  * @author Elena Litani, IBM
72  * @version $Id: XSMessageFormatter.java,v 1.2 2002/01/29 01:15:14 lehors Exp $
73  */
74 public class XSMessageFormatter implements MessageFormatter {
75     /**
76      * The domain of messages concerning the XML Schema: Structures specification.
77      */
78     public static final String JavaDoc SCHEMA_DOMAIN = "http://www.w3.org/TR/xml-schema-1";
79
80
81     // private objects to cache the locale and resource bundle
82 private Locale JavaDoc fLocale = null;
83     private ResourceBundle JavaDoc fResourceBundle = null;
84
85     /**
86      * Formats a message with the specified arguments using the given
87      * locale information.
88      *
89      * @param locale The locale of the message.
90      * @param key The message key.
91      * @param arguments The message replacement text arguments. The order
92      * of the arguments must match that of the placeholders
93      * in the actual message.
94      *
95      * @return Returns the formatted message.
96      *
97      * @throws MissingResourceException Thrown if the message with the
98      * specified key cannot be found.
99      */
100      public String JavaDoc formatMessage(Locale JavaDoc locale, String JavaDoc key, Object JavaDoc[] arguments)
101         throws MissingResourceException JavaDoc {
102         
103         if (fResourceBundle == null || locale != fLocale) {
104             if (locale != null) {
105                 fResourceBundle = PropertyResourceBundle.getBundle("com.sun.org.apache.xerces.internal.impl.msg.XMLSchemaMessages", locale);
106                 // memorize the most-recent locale
107 fLocale = locale;
108             }
109             if (fResourceBundle == null)
110                 fResourceBundle = PropertyResourceBundle.getBundle("com.sun.org.apache.xerces.internal.impl.msg.XMLSchemaMessages");
111         }
112         
113         String JavaDoc msg = fResourceBundle.getString(key);
114         if (arguments != null) {
115             try {
116                 msg = java.text.MessageFormat.format(msg, arguments);
117             } catch (Exception JavaDoc e) {
118                 msg = fResourceBundle.getString("FormatFailed");
119                 msg += " " + fResourceBundle.getString(key);
120             }
121         }
122
123         if (msg == null) {
124             msg = fResourceBundle.getString("BadMessageKey");
125             throw new MissingResourceException JavaDoc(msg, "com.sun.org.apache.xerces.internal.impl.msg.SchemaMessages", key);
126         }
127
128         return msg;
129     }
130 }
131
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