Source Code Cross Referenced for StringTranslator.java in  » ESB » open-esb » com » sun » jbi » engine » sequencing » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » ESB » open esb » com.sun.jbi.engine.sequencing.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * BEGIN_HEADER - DO NOT EDIT
003:         *
004:         * The contents of this file are subject to the terms
005:         * of the Common Development and Distribution License
006:         * (the "License").  You may not use this file except
007:         * in compliance with the License.
008:         *
009:         * You can obtain a copy of the license at
010:         * https://open-esb.dev.java.net/public/CDDLv1.0.html.
011:         * See the License for the specific language governing
012:         * permissions and limitations under the License.
013:         *
014:         * When distributing Covered Code, include this CDDL
015:         * HEADER in each file and include the License file at
016:         * https://open-esb.dev.java.net/public/CDDLv1.0.html.
017:         * If applicable add the following below this CDDL HEADER,
018:         * with the fields enclosed by brackets "[]" replaced with
019:         * your own identifying information: Portions Copyright
020:         * [year] [name of copyright owner]
021:         */
022:
023:        /*
024:         * @(#)StringTranslator.java
025:         * Copyright 2004-2007 Sun Microsystems, Inc. All Rights Reserved.
026:         *
027:         * END_HEADER - DO NOT EDIT
028:         */
029:        package com.sun.jbi.engine.sequencing.util;
030:
031:        import java.text.MessageFormat;
032:
033:        import java.util.Locale;
034:        import java.util.ResourceBundle;
035:        import java.util.logging.Logger;
036:
037:        /**
038:         * This is the implementation of the String Translator, which provides services
039:         * for internationalization of messages to all services running inside the JBI
040:         * environment.
041:         *
042:         * @author Sun Microsystems, Inc.
043:         */
044:        public class StringTranslator {
045:            /**
046:             * Logger name
047:             */
048:            private static final String LOGGER_NAME = "com.sun.jbi.engine.sequencing";
049:
050:            /**
051:             * Unqualified name for resource bundles.
052:             */
053:            public static final String RESOURCE_BUNDLE_NAME = "SequencingEngineResources";
054:
055:            /**
056:             * Log message for creation of new instance.
057:             */
058:            private static final String LOG_NEW_INSTANCE = "New StringTranslator for package {0}, classLoader is {1}";
059:
060:            /**
061:             * Log message for locale.
062:             */
063:            private static final String LOG_CURRENT_LOCALE = "Current locale is {0}";
064:
065:            /**
066:             * Log message for failure loading resource bundle.
067:             */
068:            private static final String LOG_UNABLE_TO_LOAD_BUNDLE = "Unable to load resource bundle {0} for locale {1}: {2}";
069:
070:            /**
071:             * Log message for using alternate resource bundle.
072:             */
073:            private static final String LOG_USING_BUNDLE = "Using resource bundle for locale {0} instead.";
074:
075:            /**
076:             * Log message for using fallback resource bundle to look up a message.
077:             */
078:            private static final String LOG_TRANSLATION_USING_FALLBACK = "No translation for key={0} found in resource bundle for locale {1}, "
079:                    + "using locale {2} instead.";
080:
081:            /**
082:             * Log message for no translation available for a message key in any
083:             * resource bundle.
084:             */
085:            private static final String LOG_NO_TRANSLATION_FOR_KEY = "No translation for key={0} found in any resource bundle. "
086:                    + "Insert data is [{1}].";
087:
088:            /**
089:             * Log message for no translation available for a message key in a
090:             * particular resource bundle.
091:             */
092:            private static final String LOG_NO_TRANSLATION_FOR_KEY_IN_BUNDLE = "No translation for key={0} found in resource bundle for locale {1}. "
093:                    + "Insert data is [{2}].";
094:
095:            /**
096:             * Message text used when no translation is available for a message key.
097:             */
098:            private static final String MSG_NO_TRANSLATION = "No translation available for message with key={0} and inserts=[{1}].";
099:
100:            /**
101:             * The default locale at the time this StringTranslator was created.
102:             */
103:            private Locale mDefaultLocale;
104:
105:            /**
106:             * Logger for this instance
107:             */
108:            private Logger mLog;
109:
110:            /**
111:             * ResourceBundle for a single package name.
112:             */
113:            private ResourceBundle mResourceBundle;
114:
115:            /**
116:             * Constructor. This loads the Resource Bundle for the current locale, and
117:             * if the current locale is not Locale.US, it loads the Resource Bundle
118:             * for Locale.US and stores it as the backup for string lookup.
119:             */
120:            public StringTranslator() {
121:                mLog = Logger.getLogger(LOGGER_NAME);
122:
123:                String bundleName = "com.sun.jbi.engine.sequencing" + "."
124:                        + RESOURCE_BUNDLE_NAME;
125:                mDefaultLocale = Locale.getDefault();
126:
127:                try {
128:                    mResourceBundle = ResourceBundle.getBundle(bundleName,
129:                            mDefaultLocale);
130:                } catch (java.util.MissingResourceException mrEx) {
131:                    mLog.warning(MessageFormat.format(
132:                            LOG_UNABLE_TO_LOAD_BUNDLE, new Object[] {
133:                                    bundleName, mDefaultLocale, mrEx }));
134:                }
135:            }
136:
137:            /**
138:             * Get a localized string using the specified resource key.
139:             *
140:             * @param key - the key to the localized string in the resource bundle.
141:             *
142:             * @return the localized string.
143:             */
144:            public String getString(String key) {
145:                Object[] inserts = new Object[0];
146:
147:                return getString(key, inserts);
148:            }
149:
150:            /**
151:             * Get a localized string using the specified resource key. Handle one
152:             * message insert.
153:             *
154:             * @param key - the key to the localized string in the resource bundle.
155:             * @param insert1 - the message insert.
156:             *
157:             * @return the localized string formatted with the message insert.
158:             */
159:            public String getString(String key, Object insert1) {
160:                Object[] inserts = { insert1 };
161:
162:                return getString(key, inserts);
163:            }
164:
165:            /**
166:             * Get a localized string using the specified resource key. Handle two
167:             * message inserts.
168:             *
169:             * @param key - the key to the localized string in the resource bundle.
170:             * @param insert1 - the first message insert.
171:             * @param insert2 - the second message insert.
172:             *
173:             * @return the localized string formatted with the message inserts.
174:             */
175:            public String getString(String key, Object insert1, Object insert2) {
176:                Object[] inserts = { insert1, insert2 };
177:
178:                return getString(key, inserts);
179:            }
180:
181:            /**
182:             * Get a localized string using the specified resource key. Handle three
183:             * message inserts.
184:             *
185:             * @param key - the key to the localized string in the resource bundle.
186:             * @param insert1 - the first message insert.
187:             * @param insert2 - the second message insert.
188:             * @param insert3 - the third message insert.
189:             *
190:             * @return the localized string formatted with the message inserts.
191:             */
192:            public String getString(String key, Object insert1, Object insert2,
193:                    Object insert3) {
194:                Object[] inserts = { insert1, insert2, insert3 };
195:
196:                return getString(key, inserts);
197:            }
198:
199:            /**
200:             * Get a localized string using the specified resource key. Handle four
201:             * message inserts.
202:             *
203:             * @param key - the key to the localized string in the resource bundle.
204:             * @param insert1 - the first message insert.
205:             * @param insert2 - the second message insert.
206:             * @param insert3 - the third message insert.
207:             * @param insert4 - the fourth message insert.
208:             *
209:             * @return the localized string formatted with the message inserts.
210:             */
211:            public String getString(String key, Object insert1, Object insert2,
212:                    Object insert3, Object insert4) {
213:                Object[] inserts = { insert1, insert2, insert3, insert4 };
214:
215:                return getString(key, inserts);
216:            }
217:
218:            /**
219:             * Get a localized string using the specified resource key. Handle any
220:             * number of message inserts. This method is called by all the other
221:             * getString() methods in the class. The procedure for string lookup is to
222:             * first look in the primary resource bundle, then in the fallback
223:             * resource bundle. If the string is found in the primary, return the
224:             * translated string quietly. If the string is not found in the primary
225:             * but in the fallback, log a warning and return the translated string. If
226:             * the string is not found in either bundle, log an error and return a
227:             * message formatted with the key and insert values provided by the
228:             * caller. If there is no resource bundle available, just return a message
229:             * formatted with the key and insert values provided by the caller.
230:             *
231:             * @param key - the key to the localized string in the resource bundle.
232:             * @param inserts - the array of message inserts.
233:             *
234:             * @return the localized string formatted with the message inserts.
235:             */
236:            public String getString(String key, Object[] inserts) {
237:                String translated = null;
238:
239:                if (null != mResourceBundle) {
240:                    try {
241:                        translated = mResourceBundle.getString(key);
242:                        translated = MessageFormat.format(translated, inserts);
243:                    } catch (java.util.MissingResourceException mrEx) {
244:
245:                        String fi = formatInserts(inserts);
246:                        translated = MessageFormat.format(MSG_NO_TRANSLATION,
247:                                new Object[] { key, fi });
248:                        mLog.warning(MessageFormat.format(
249:                                LOG_NO_TRANSLATION_FOR_KEY_IN_BUNDLE,
250:                                new Object[] { key, mDefaultLocale, fi }));
251:                    }
252:                } else {
253:                    translated = MessageFormat.format(MSG_NO_TRANSLATION,
254:                            new Object[] { key, formatInserts(inserts) });
255:                }
256:
257:                return translated;
258:            }
259:
260:            /**
261:             * Format an array of message inserts into a string. The ouptut string is
262:             * in the format "insert1,insert2,....,insertn".
263:             *
264:             * @param inserts - the array of message inserts.
265:             *
266:             * @return the string formatted with the message inserts.
267:             */
268:            private String formatInserts(Object[] inserts) {
269:                StringBuffer formatted = new StringBuffer("");
270:
271:                for (int i = 0; i < inserts.length; i++) {
272:                    if (i > 0) {
273:                        formatted.append(",");
274:                    }
275:
276:                    formatted.append(inserts[i].toString());
277:                }
278:
279:                return formatted.toString();
280:            }
281:        }
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