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17 package org.apache.geronimo.validator;
18
19 import java.text.MessageFormat  ;
20 import java.util.Enumeration ;
21 import java.util.Hashtable ;
22 import java.util.Locale ;
23 import java.util.MissingResourceException ;
24 import java.util.ResourceBundle ;
25
26
31 public class Messages {
32 static private Hashtable bundles = new Hashtable ();
33 static private Hashtable rbFormats = new Hashtable ();
34 static private Locale globalLocale;
35
36 private ResourceBundle messages;
37 private Hashtable formats;
38 private Locale locale;
39 private String resourceName;
40
41 public Messages(String resourceName) {
42 synchronized (Messages.class) {
43 locale = globalLocale;
44 this.resourceName = resourceName + ".Messages";
45
46 ResourceBundle rb = (ResourceBundle ) bundles.get(this.resourceName);
47 if (rb == null) {
48 init(); } else {
50 messages = rb;
51 formats = (Hashtable ) rbFormats.get(this.resourceName);
52 }
53 }
54
55 }
56
57 protected void init() {
58 try {
59 if (locale == null)
60 messages = ResourceBundle.getBundle(resourceName);
61 else
62 messages = ResourceBundle.getBundle(resourceName, locale);
63 } catch (Exception except) {
64 messages = new EmptyResourceBundle();
65 }
66
67 formats = new Hashtable ();
68
69 bundles.put(resourceName, messages);
70 rbFormats.put(resourceName, formats);
71 }
72
73 public String format(String message, Object arg1) {
74 return format(message, new Object [] { arg1 });
75 }
76
77 public String format(String message, Object arg1, Object arg2) {
78 return format(message, new Object [] { arg1, arg2 });
79 }
80
81 public String format(String message, Object arg1, Object arg2, Object arg3) {
82 return format(message, new Object [] { arg1, arg2, arg3 });
83 }
84
85 public String format(String message, Object arg1, Object arg2, Object arg3, Object arg4) {
86 return format(message, new Object [] { arg1, arg2, arg3, arg4 });
87 }
88
89 public String format(String message, Object arg1, Object arg2, Object arg3, Object arg4, Object arg5) {
90 return format(message, new Object [] { arg1, arg2, arg3, arg4, arg5 });
91 }
92
93 public String format(String message) {
94 return message(message);
95 }
96
97 public String format(String message, Object [] args) {
98 if (locale != globalLocale) {
99 synchronized (Messages.class) {
100 init(); }
102 }
103
104 MessageFormat mf;
105 String msg;
106
107 try {
108 mf = (MessageFormat ) formats.get(message);
109 if (mf == null) {
110 try {
111 msg = messages.getString(message);
112 } catch (MissingResourceException except) {
113 return message;
114 }
115 mf = new MessageFormat (msg);
116 formats.put(message, mf);
117 }
118 return mf.format(args);
119 } catch (Exception except) {
120 return "An internal error occured while processing message " + message;
121 }
122 }
123
124 public String message(String message) {
125 if (locale != globalLocale) {
126 synchronized (Messages.class) {
127 init();
128 }
129 }
130
131 try {
132 return messages.getString(message);
133 } catch (MissingResourceException except) {
134 return message;
135 }
136 }
137
138 static public void setLocale(Locale locale) {
139 synchronized (Messages.class) {
140 globalLocale = locale;
141 bundles = new Hashtable ();
142 rbFormats = new Hashtable ();
143 }
144 }
145
146 static {
147 setLocale(Locale.getDefault());
148 }
149
150 private static final class EmptyResourceBundle extends ResourceBundle implements Enumeration {
151
152 public Enumeration getKeys() {
153 return this;
154 }
155
156 protected Object handleGetObject(String name) {
157 return "[Missing message " + name + "]";
158 }
159
160 public boolean hasMoreElements() {
161 return false;
162 }
163
164 public Object nextElement() {
165 return null;
166 }
167
168 }
169
170 }
171 |
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