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1
45 package org.openejb.util;
46
47 import java.text.MessageFormat  ;
48 import java.util.Enumeration ;
49 import java.util.Hashtable ;
50 import java.util.Locale ;
51 import java.util.MissingResourceException ;
52 import java.util.ResourceBundle ;
53
54
60 public class Messages {
61 static private Hashtable _rbBundles = new Hashtable ();
62 static private Hashtable _rbFormats = new Hashtable ();
63 static private Locale _globalLocale;
64
65 private ResourceBundle _messages;
66 private Hashtable _formats;
67 private Locale _locale;
68 private String _resourceName;
69
70 public Messages(String resourceName) {
71 synchronized (Messages.class) {
72 _locale = _globalLocale;
73 _resourceName = resourceName + ".Messages";
74
75 ResourceBundle rb = (ResourceBundle ) _rbBundles.get(_resourceName);
76 if (rb == null) {
77 init();
78 } else {
79 _messages = rb;
80 _formats = (Hashtable ) _rbFormats.get(_resourceName);
81 }
82 }
83
84 }
85
86 protected void init() {
87 try {
88 if (_locale == null)
89 _messages = ResourceBundle.getBundle(_resourceName);
90 else
91 _messages = ResourceBundle.getBundle(_resourceName, _locale);
92 } catch (Exception except) {
93 _messages = new EmptyResourceBundle();
94 }
95
96 _formats = new Hashtable ();
97
98 _rbBundles.put(_resourceName, _messages);
99 _rbFormats.put(_resourceName, _formats);
100 }
101
102 public String format(String message, Object arg1) {
103 return format(message, new Object [] { arg1 });
104 }
105
106 public String format(String message, Object arg1, Object arg2) {
107 return format(message, new Object [] { arg1, arg2 });
108 }
109
110 public String format(String message, Object arg1, Object arg2, Object arg3) {
111 return format(message, new Object [] { arg1, arg2, arg3 });
112 }
113
114 public String format(String message, Object arg1, Object arg2, Object arg3, Object arg4) {
115 return format(message, new Object [] { arg1, arg2, arg3, arg4 });
116 }
117
118 public String format(String message, Object arg1, Object arg2, Object arg3, Object arg4, Object arg5) {
119 return format(message, new Object [] { arg1, arg2, arg3, arg4, arg5 });
120 }
121
122 public String format(String message) {
123 return message(message);
124 }
125
126 public String format(String message, Object [] args) {
127 if (_locale != _globalLocale) {
128 synchronized (Messages.class) {
129 init();
130 }
131 }
132
133 MessageFormat mf;
134 String msg;
135
136 try {
137 mf = (MessageFormat ) _formats.get(message);
138 if (mf == null) {
139 try {
140 msg = _messages.getString(message);
141 } catch (MissingResourceException except) {
142 return message;
143 }
144 mf = new MessageFormat (msg);
145 _formats.put(message, mf);
146 }
147 return mf.format(args);
148 } catch (Exception except) {
149 return "An internal error occured while processing message " + message;
150 }
151 }
152
153 public String message(String message) {
154 if (_locale != _globalLocale) {
155 synchronized (Messages.class) {
156 init();
157 }
158 }
159
160 try {
161 return _messages.getString(message);
162 } catch (MissingResourceException except) {
163 return message;
164 }
165 }
166
167 static public void setLocale(Locale locale) {
168 synchronized (Messages.class) {
169 _globalLocale = locale;
170 _rbBundles = new Hashtable ();
171 _rbFormats = new Hashtable ();
172 }
173 }
174
175 static {
176 setLocale(Locale.getDefault());
177 }
178
179 private static final class EmptyResourceBundle extends ResourceBundle implements Enumeration {
180
181 public Enumeration getKeys() {
182 return this;
183 }
184
185 protected Object handleGetObject(String name) {
186 return "[Missing message " + name + "]";
187 }
188
189 public boolean hasMoreElements() {
190 return false;
191 }
192
193 public Object nextElement() {
194 return null;
195 }
196
197 }
198
199 }
200 |
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