Source Code Cross Referenced for MessageExchangeHelper.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:         * @(#)MessageExchangeHelper.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 com.sun.jbi.engine.sequencing.PatternRegistry;
032:        import com.sun.jbi.engine.sequencing.SequencingEngineContext;
033:
034:        import java.util.logging.Logger;
035:
036:        import javax.jbi.messaging.DeliveryChannel;
037:        import javax.jbi.messaging.ExchangeStatus;
038:        import javax.jbi.messaging.Fault;
039:        import javax.jbi.messaging.InOnly;
040:        import javax.jbi.messaging.InOut;
041:        import javax.jbi.messaging.MessageExchange;
042:        import javax.jbi.messaging.MessageExchangeFactory;
043:        import javax.jbi.messaging.NormalizedMessage;
044:        import javax.jbi.messaging.RobustInOnly;
045:
046:        /**
047:         * Helper class to process message exchanges.
048:         *
049:         * @author Sun Microsystems, Inc.
050:         */
051:        public class MessageExchangeHelper {
052:            /**
053:             * Logger.
054:             */
055:            private static Logger sLog = Logger
056:                    .getLogger("com.sun.jbi.engine.seqeuncing");
057:
058:            /**
059:             * Creates a new instance of MessageExchangeHelper.
060:             */
061:            public MessageExchangeHelper() {
062:            }
063:
064:            /**
065:             * Returns error.
066:             *
067:             * @param msg ME
068:             *
069:             * @return exception exception
070:             */
071:            public static Exception getError(MessageExchange msg) {
072:                if (msg == null) {
073:                    return null;
074:                }
075:
076:                if (msg instanceof  InOut) {
077:                    return (((InOut) (msg)).getError());
078:                } else if (msg instanceof  InOnly) {
079:                    return null;
080:                } else if (msg instanceof  RobustInOnly) {
081:                    return (((RobustInOnly) (msg)).getError());
082:                } else {
083:                    return null;
084:                }
085:            }
086:
087:            /**
088:             * Returns fault.
089:             *
090:             * @param msg message exchange from which fault has to be extracted.
091:             *
092:             * @return Fault fault
093:             */
094:            public static Fault getFault(MessageExchange msg) {
095:                if (msg == null) {
096:                    return null;
097:                }
098:
099:                if (msg instanceof  InOut) {
100:                    return (((InOut) (msg)).getFault());
101:                } else if (msg instanceof  InOnly) {
102:                    return null;
103:                } else if (msg instanceof  RobustInOnly) {
104:                    return (((RobustInOnly) (msg)).getFault());
105:                } else {
106:                    return null;
107:                }
108:            }
109:
110:            /**
111:             * Returns the in message.
112:             *
113:             * @param msg message exchange
114:             *
115:             * @return normalized message
116:             */
117:            public static NormalizedMessage getInMessage(MessageExchange msg) {
118:                if (msg == null) {
119:                    sLog.severe("Returnign nulll in getInMessage()");
120:
121:                    return null;
122:                }
123:
124:                if (msg instanceof  InOut) {
125:                    return (((InOut) (msg)).getInMessage());
126:                } else if (msg instanceof  InOnly) {
127:                    return (((InOnly) (msg)).getInMessage());
128:                } else if (msg instanceof  RobustInOnly) {
129:                    return (((RobustInOnly) (msg)).getInMessage());
130:                } else {
131:                    return null;
132:                }
133:            }
134:
135:            /**
136:             * Returns the out message.
137:             *
138:             * @param msg message exchange
139:             *
140:             * @return normalized message
141:             */
142:            public static NormalizedMessage getOutMessage(MessageExchange msg) {
143:                if (msg == null) {
144:                    return null;
145:                }
146:
147:                if (msg instanceof  InOut) {
148:                    return (((InOut) (msg)).getOutMessage());
149:                } else if (msg instanceof  InOnly) {
150:                    return null;
151:                } else if (msg instanceof  RobustInOnly) {
152:                    return null;
153:                } else {
154:                    return null;
155:                }
156:            }
157:
158:            /**
159:             * Creates an exchange corresponding to pattern.
160:             *
161:             * @param pattern pattern
162:             *
163:             * @return message exchange
164:             */
165:            public static MessageExchange createExchange(String pattern) {
166:                sLog.fine("Creating exchange for pattern " + pattern);
167:
168:                MessageExchange tmpExchng = null;
169:
170:                try {
171:                    DeliveryChannel chnl = SequencingEngineContext
172:                            .getInstance().getChannel();
173:
174:                    MessageExchangeFactory factory = chnl
175:                            .createExchangeFactory();
176:
177:                    tmpExchng = factory
178:                            .createExchange(new java.net.URI(pattern));
179:
180:                    return tmpExchng;
181:                } catch (Exception e) {
182:                    e.printStackTrace();
183:
184:                    return null;
185:                }
186:            }
187:
188:            /**
189:             * Updates the message exchange.
190:             *
191:             * @param msg message exchange.
192:             * @param in in message
193:             *
194:             * @return true / false depending if update was successful or not
195:             */
196:            public static boolean updateInMessage(MessageExchange msg,
197:                    NormalizedMessage in) {
198:                if (msg == null) {
199:                    return false;
200:                }
201:
202:                if (in != null) {
203:                    return createIn(msg, in);
204:                }
205:
206:                return true;
207:            }
208:
209:            /**
210:             * Updates the message accding to the arguments provided.
211:             *
212:             * @param msg ME
213:             * @param out Out message
214:             * @param error errror message
215:             * @param fault fault
216:             *
217:             * @return true if update is successfull.
218:             */
219:            public static boolean updateMessage(MessageExchange msg,
220:                    NormalizedMessage out, Exception error, Fault fault) {
221:                if (msg == null) {
222:                    return false;
223:                }
224:
225:                if (out != null) {
226:                    return createOut(msg, out);
227:                }
228:
229:                if (fault != null) {
230:                    return createFault(msg, fault);
231:                }
232:
233:                if (error != null) {
234:                    return createError(msg, error);
235:                }
236:
237:                try {
238:                    msg.setStatus(ExchangeStatus.DONE);
239:
240:                    if (msg.getProperty(ConfigData.RESPONSE_SEQ_ID) == null) {
241:                        String id = SequencingEngineUtil.getTrackingId();
242:                        msg.setProperty(ConfigData.RESPONSE_SEQ_ID, id);
243:                    }
244:                } catch (Exception e) {
245:                    e.printStackTrace();
246:
247:                    return false;
248:                }
249:
250:                return true;
251:            }
252:
253:            /**
254:             * Creates an error message.
255:             *
256:             * @param msg ME
257:             * @param error exception
258:             *
259:             * @return true/ false.
260:             */
261:            private static boolean createError(MessageExchange msg,
262:                    Exception error) {
263:                try {
264:                    if (error == null) {
265:                        msg.setError(new Exception("Unknown Exception"));
266:
267:                        return true;
268:                    }
269:
270:                    msg.setError(error);
271:
272:                    if (msg.getProperty(ConfigData.RESPONSE_SEQ_ID) == null) {
273:                        String id = SequencingEngineUtil.getTrackingId();
274:                        msg.setProperty(ConfigData.RESPONSE_SEQ_ID, id);
275:                    }
276:                } catch (Exception me) {
277:                    me.printStackTrace();
278:
279:                    return false;
280:                }
281:
282:                return true;
283:            }
284:
285:            /**
286:             * Creates a fault message.
287:             *
288:             * @param msg ME
289:             * @param flt fault
290:             *
291:             * @return true / false
292:             */
293:            private static boolean createFault(MessageExchange msg, Fault flt) {
294:                if (flt == null) {
295:                    return false;
296:                }
297:
298:                try {
299:                    if (msg instanceof  InOnly) {
300:                        msg.setStatus(ExchangeStatus.ERROR);
301:                    }
302:
303:                    msg.setFault(flt);
304:                } catch (Exception e) {
305:                    e.printStackTrace();
306:
307:                    return false;
308:                }
309:
310:                return true;
311:            }
312:
313:            /**
314:             * Creates an In Message.
315:             *
316:             * @param msg ME
317:             * @param in in message
318:             *
319:             * @return true / false.
320:             */
321:            private static boolean createIn(MessageExchange msg,
322:                    NormalizedMessage in) {
323:                String id = SequencingEngineUtil.getTrackingId();
324:
325:                try {
326:                    if (msg instanceof  InOut) {
327:                        ((InOut) (msg)).setInMessage(in);
328:                        msg.setProperty(ConfigData.REQUEST_SEQ_ID, id);
329:                    } else if (msg instanceof  InOnly) {
330:                        ((InOnly) (msg)).setInMessage(in);
331:                        msg.setProperty(ConfigData.REQUEST_SEQ_ID, id);
332:                    } else if (msg instanceof  RobustInOnly) {
333:                        ((RobustInOnly) (msg)).setInMessage(in);
334:                        msg.setProperty(ConfigData.REQUEST_SEQ_ID, id);
335:                    } else {
336:                        return false;
337:                    }
338:                } catch (Exception e) {
339:                    e.printStackTrace();
340:
341:                    return false;
342:                }
343:
344:                return true;
345:            }
346:
347:            /**
348:             * Creates the out message.
349:             *
350:             * @param msg ME
351:             * @param out out message
352:             *
353:             * @return true /false.
354:             */
355:            private static boolean createOut(MessageExchange msg,
356:                    NormalizedMessage out) {
357:                String id = SequencingEngineUtil.getTrackingId();
358:
359:                try {
360:                    if (msg instanceof  InOut) {
361:                        ((InOut) (msg)).setOutMessage(out);
362:                        msg.setProperty(ConfigData.RESPONSE_SEQ_ID, id);
363:                    } else if (msg instanceof  InOnly) {
364:                        msg.setStatus(ExchangeStatus.DONE);
365:                        msg.setProperty(ConfigData.RESPONSE_SEQ_ID, id);
366:                    } else if (msg instanceof  RobustInOnly) {
367:                        msg.setStatus(ExchangeStatus.DONE);
368:                        msg.setProperty(ConfigData.RESPONSE_SEQ_ID, id);
369:                    } else {
370:                        return false;
371:                    }
372:                } catch (Exception e) {
373:                    e.printStackTrace();
374:
375:                    return false;
376:                }
377:
378:                return true;
379:            }
380:        }
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