01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17:
18: package org.apache.xerces.impl.xs;
19:
20: import java.util.Locale;
21: import java.util.MissingResourceException;
22: import java.util.ResourceBundle;
23: import java.util.PropertyResourceBundle;
24: import org.apache.xerces.util.MessageFormatter;
25:
26: /**
27: * SchemaMessageProvider implements an XMLMessageProvider that
28: * provides localizable error messages for the W3C XML Schema Language
29: *
30: * @xerces.internal
31: *
32: * @author Elena Litani, IBM
33: * @version $Id: XSMessageFormatter.java 446734 2006-09-15 20:51:23Z mrglavas $
34: */
35: public class XSMessageFormatter implements MessageFormatter {
36: /**
37: * The domain of messages concerning the XML Schema: Structures specification.
38: */
39: public static final String SCHEMA_DOMAIN = "http://www.w3.org/TR/xml-schema-1";
40:
41: // private objects to cache the locale and resource bundle
42: private Locale fLocale = null;
43: private ResourceBundle fResourceBundle = null;
44:
45: /**
46: * Formats a message with the specified arguments using the given
47: * locale information.
48: *
49: * @param locale The locale of the message.
50: * @param key The message key.
51: * @param arguments The message replacement text arguments. The order
52: * of the arguments must match that of the placeholders
53: * in the actual message.
54: *
55: * @return Returns the formatted message.
56: *
57: * @throws MissingResourceException Thrown if the message with the
58: * specified key cannot be found.
59: */
60: public String formatMessage(Locale locale, String key,
61: Object[] arguments) throws MissingResourceException {
62:
63: if (fResourceBundle == null || locale != fLocale) {
64: if (locale != null) {
65: fResourceBundle = PropertyResourceBundle.getBundle(
66: "org.apache.xerces.impl.msg.XMLSchemaMessages",
67: locale);
68: // memorize the most-recent locale
69: fLocale = locale;
70: }
71: if (fResourceBundle == null)
72: fResourceBundle = PropertyResourceBundle
73: .getBundle("org.apache.xerces.impl.msg.XMLSchemaMessages");
74: }
75:
76: String msg = fResourceBundle.getString(key);
77: if (arguments != null) {
78: try {
79: msg = java.text.MessageFormat.format(msg, arguments);
80: } catch (Exception e) {
81: msg = fResourceBundle.getString("FormatFailed");
82: msg += " " + fResourceBundle.getString(key);
83: }
84: }
85:
86: if (msg == null) {
87: msg = fResourceBundle.getString("BadMessageKey");
88: throw new MissingResourceException(msg,
89: "org.apache.xerces.impl.msg.SchemaMessages", key);
90: }
91:
92: return msg;
93: }
94: }
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