Source Code Cross Referenced for Event.java in  » J2EE » Expresso » com » jcorporate » expresso » services » dbobj » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » Expresso » com.jcorporate.expresso.services.dbobj 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* ====================================================================
002:         * The Jcorporate Apache Style Software License, Version 1.2 05-07-2002
003:         *
004:         * Copyright (c) 1995-2002 Jcorporate Ltd. All rights reserved.
005:         *
006:         * Redistribution and use in source and binary forms, with or without
007:         * modification, are permitted provided that the following conditions
008:         * are met:
009:         *
010:         * 1. Redistributions of source code must retain the above copyright
011:         *    notice, this list of conditions and the following disclaimer.
012:         *
013:         * 2. Redistributions in binary form must reproduce the above copyright
014:         *    notice, this list of conditions and the following disclaimer in
015:         *    the documentation and/or other materials provided with the
016:         *    distribution.
017:         *
018:         * 3. The end-user documentation included with the redistribution,
019:         *    if any, must include the following acknowledgment:
020:         *       "This product includes software developed by Jcorporate Ltd.
021:         *        (http://www.jcorporate.com/)."
022:         *    Alternately, this acknowledgment may appear in the software itself,
023:         *    if and wherever such third-party acknowledgments normally appear.
024:         *
025:         * 4. "Jcorporate" and product names such as "Expresso" must
026:         *    not be used to endorse or promote products derived from this
027:         *    software without prior written permission. For written permission,
028:         *    please contact info@jcorporate.com.
029:         *
030:         * 5. Products derived from this software may not be called "Expresso",
031:         *    or other Jcorporate product names; nor may "Expresso" or other
032:         *    Jcorporate product names appear in their name, without prior
033:         *    written permission of Jcorporate Ltd.
034:         *
035:         * 6. No product derived from this software may compete in the same
036:         *    market space, i.e. framework, without prior written permission
037:         *    of Jcorporate Ltd. For written permission, please contact
038:         *    partners@jcorporate.com.
039:         *
040:         * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
041:         * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
042:         * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
043:         * DISCLAIMED.  IN NO EVENT SHALL JCORPORATE LTD OR ITS CONTRIBUTORS
044:         * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
045:         * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
046:         * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
047:         * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
048:         * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
049:         * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
050:         * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
051:         * SUCH DAMAGE.
052:         * ====================================================================
053:         *
054:         * This software consists of voluntary contributions made by many
055:         * individuals on behalf of the Jcorporate Ltd. Contributions back
056:         * to the project(s) are encouraged when you make modifications.
057:         * Please send them to support@jcorporate.com. For more information
058:         * on Jcorporate Ltd. and its products, please see
059:         * <http://www.jcorporate.com/>.
060:         *
061:         * Portions of this software are based upon other open source
062:         * products and are subject to their respective licenses.
063:         */
064:
065:        /**
066:         * Event.java
067:         *
068:         * Copyright 1999, 2000, 2001 Jcorporate Ltd.
069:         */package com.jcorporate.expresso.services.dbobj;
070:
071:        import com.jcorporate.expresso.core.db.DBException;
072:        import com.jcorporate.expresso.core.dbobj.RequestContext;
073:        import com.jcorporate.expresso.core.dbobj.SecuredDBObject;
074:        import com.jcorporate.expresso.core.logging.LogException;
075:        import com.jcorporate.expresso.core.misc.ConfigManager;
076:        import com.jcorporate.expresso.core.misc.ConfigurationException;
077:        import com.jcorporate.expresso.core.misc.EMailSender;
078:        import com.jcorporate.expresso.core.misc.StringUtil;
079:        import com.jcorporate.expresso.core.security.User;
080:        import com.jcorporate.expresso.kernel.util.FastStringBuffer;
081:        import org.apache.log4j.Logger;
082:
083:        import java.util.Enumeration;
084:        import java.util.Iterator;
085:        import java.util.Vector;
086:
087:        /**
088:         * Event
089:         *
090:         * @author Michael Nash
091:         */
092:        public class Event extends SecuredDBObject {
093:            private static Logger log = Logger.getLogger(Event.class);
094:
095:            /**
096:             * use this as theEvent parameter in order to generate admin email
097:             *
098:             * @see #Event(java.lang.String, java.lang.String, java.lang.String, boolean)
099:             */
100:            public static final String SYSTEM_ERROR = "SYSERROR";
101:
102:            /**
103:             * @see com.jcorporate.expresso.core.dbobj.SecuredDBObject
104:             */
105:            public Event() throws DBException {
106:                super ();
107:            } /* Event() */
108:
109:            /**
110:             * @param uid the expresso uid
111:             * @throws DBException upon initialization error
112:             */
113:            public Event(int uid) throws DBException {
114:                super (uid);
115:            }
116:
117:            /**
118:             * For using DBObjects within Controllers.  Initializes based upon the current
119:             * user and the requested db. [Of course this can be modified later]
120:             *
121:             * @param request - The request context handed to you by the framework.
122:             * @throws DBException upon initialization error
123:             */
124:            public Event(RequestContext request) throws DBException {
125:                super (request);
126:            }
127:
128:            /**
129:             * The one-liner version of event via this special constructor
130:             * This method is used to create the event and send the notifications all
131:             * in one step.
132:             *
133:             * @param dbName     the database context name
134:             * @param theEvent   Code of the event to trigger
135:             * @param theMessage Detail message associated for the event
136:             * @param success    True if the event is the success of a task,
137:             *                   false if it indicates failure
138:             * @throws DBException If there is problem sending the notification
139:             */
140:            public Event(String dbName, String theEvent, String theMessage,
141:                    boolean success) throws DBException, LogException {
142:                this (SecuredDBObject.SYSTEM_ACCOUNT);
143:                setDataContext(dbName);
144:                setField("Event", theEvent);
145:
146:                /* if we can't find the event, send a system error notice */
147:                try {
148:                    retrieve();
149:                } catch (DBException de) {
150:
151:                    /* unless of course we can't find the syserror event! */
152:                    if (!theEvent.equalsIgnoreCase(SYSTEM_ERROR)) {
153:                        new Event(dbName, SYSTEM_ERROR,
154:                                "Could not find event '" + theEvent + "'",
155:                                false);
156:                        throw new DBException("No such event '" + theEvent
157:                                + "'");
158:                    }
159:                }
160:
161:                Vector mailMessage = new Vector(1);
162:                mailMessage.addElement(theMessage);
163:                sendMail(mailMessage, success);
164:            } /* Event(String, String, String, boolean) */
165:
166:            /**
167:             * @return Vector of valid values
168:             * @throws DBException If there is a problem retrieving the values
169:             */
170:            public Vector getValues() throws DBException {
171:                return getValuesDefault("Event", "Descrip");
172:            } /* getValues() */
173:
174:            /**
175:             * Once an Event has been retrieved, this method allows the e-mail
176:             * notifications to be sent to each of the appropriate users
177:             *
178:             * @param theMessage A Vector of strings containing the text of
179:             *                   the message to be sent
180:             * @param success    Is this message a notification of success?
181:             * @throws DBException on any error, including a mail system error
182:             */
183:            public void sendMail(Vector theMessage, boolean success)
184:                    throws DBException, LogException {
185:                EventMail myEventMails = new EventMail(
186:                        SecuredDBObject.SYSTEM_ACCOUNT);
187:                myEventMails.setDataContext(getDataContext());
188:
189:                EventMail oneEventMail = null;
190:                User oneUser = new User();
191:                oneUser.setDataContext(getDataContext());
192:
193:                FastStringBuffer bigString = new FastStringBuffer(256);
194:                String oneRecipient = ("");
195:
196:                for (Enumeration e = theMessage.elements(); e.hasMoreElements();) {
197:                    bigString.append((String) e.nextElement());
198:                    bigString.append("\n");
199:                }
200:
201:                bigString.append("\nFrom Server:");
202:                bigString.append(Setup.getValueRequired(getDataContext(),
203:                        "HTTPServ"));
204:                bigString.append(", Database/context:");
205:                bigString.append(getDataContext());
206:
207:                String dbDescrip = "";
208:
209:                try {
210:                    dbDescrip = StringUtil.notNull(ConfigManager.getContext(
211:                            getDataContext()).getDescription());
212:                } catch (ConfigurationException ce) {
213:                    throw new DBException(ce);
214:                }
215:                if (!dbDescrip.equals("")) {
216:                    bigString.append(" (");
217:                    bigString.append(dbDescrip);
218:                    bigString.append(")");
219:                }
220:
221:                myEventMails.setField("Event", this .getField("Event"));
222:
223:                if (success) {
224:                    myEventMails.setField("Success", "Y");
225:                } else {
226:                    myEventMails.setField("Success", "N");
227:                }
228:
229:                int theCount = 0;
230:
231:                for (Iterator em = myEventMails.searchAndRetrieveList()
232:                        .iterator(); em.hasNext();) {
233:                    oneEventMail = (EventMail) em.next();
234:                    theCount++;
235:                    oneUser.clear();
236:                    oneUser.setUid(oneEventMail.getField("ExpUid"));
237:
238:                    if (!oneUser.find()) {
239:                        log.error("Attempting to send event notification "
240:                                + "for event '" + getField("Event") + "' to "
241:                                + "user " + oneEventMail.getField("ExpUid")
242:                                + ", but this user not found in the '"
243:                                + getDataContext() + "' context.");
244:                        continue;
245:                    }
246:
247:                    oneRecipient = oneUser.getEmail();
248:
249:                    if (log.isInfoEnabled()) {
250:                        log.info("Notifying " + oneRecipient + ":"
251:                                + this .getField("Descrip"));
252:                    }
253:
254:                    try {
255:                        String subject = null;
256:
257:                        if (success) {
258:                            subject = (this .getField("Descrip"));
259:                        } else {
260:                            subject = ("ERROR:" + getField("Descrip"));
261:                        }
262:
263:                        EMailSender ems = new EMailSender();
264:                        ems.setDBName(getDataContext());
265:                        ems.send(oneRecipient, subject, bigString.toString());
266:                    } catch (Exception e) {
267:                        throw new DBException("Error sending e-mail", e);
268:                    }
269:                } /* for each recipient */
270:
271:                if (log.isInfoEnabled()) {
272:                    log.info("Sent " + theCount + " e-mail notifications");
273:                }
274:
275:                if (theCount == 0) {
276:                    String successFlag = "N";
277:
278:                    if (success) {
279:                        successFlag = "Y";
280:                    }
281:
282:                    log.warn("No users in db/context '" + getDataContext()
283:                            + "' were set " + "to receive notice of event '"
284:                            + getField("Event") + "' with " + " success flag '"
285:                            + successFlag + "', so " + "no notices were sent.");
286:                }
287:            } /* sendMail(Vector, boolean) */
288:
289:            /**
290:             * Set up the database fields for this object
291:             */
292:            protected synchronized void setupFields() throws DBException {
293:                setTargetTable("EVENT");
294:                setDescription("DBevent");
295:                setCharset("ISO-8859-1");
296:                addField("Event", "char", 30, false, "eventCode");
297:                addField("Descrip", "varchar", 80, false, "eventDescrip");
298:                setStringFilter("Event", "stripFilter");
299:                setStringFilter("Descrip", "standardFilter");
300:                addKey("Event");
301:                addDetail("com.jcorporate.expresso.services.dbobj.EventMail",
302:                        "Event", "Event");
303:            } /* setupFields() */
304:
305:            /**
306:             * @throws DBException
307:             */
308:            public synchronized void populateDefaultValues() throws DBException {
309:                if (log.isInfoEnabled()) {
310:                    log.info("Populating default values for Events in db '"
311:                            + getDataContext() + "'");
312:                }
313:
314:                Event oneEvent = new Event();
315:                oneEvent.setDataContext(getDataContext());
316:                oneEvent.setField("Event", SYSTEM_ERROR);
317:
318:                if (!oneEvent.find()) {
319:                    oneEvent.setField("Descrip", "System Error");
320:                    oneEvent.add();
321:                    if (log.isInfoEnabled()) {
322:                        log.info("Added 'SYSERROR' event");
323:                    }
324:                } else {
325:                    if (log.isInfoEnabled()) {
326:                        log.info("'SYSERROR' event already set up");
327:                    }
328:                }
329:
330:                oneEvent.clear();
331:                oneEvent.setField("Event", "HEALTH");
332:
333:                if (!oneEvent.find()) {
334:                    oneEvent.setField("Descrip", "System Health Check");
335:                    oneEvent.add();
336:                    if (log.isInfoEnabled()) {
337:                        log.info("Added 'HEALTH' event");
338:                    }
339:                } else {
340:                    if (log.isInfoEnabled()) {
341:                        log.info("'HEALTH' event already set up");
342:                    }
343:                }
344:
345:                oneEvent.clear();
346:                oneEvent.setField("Event", "DOWNLOAD");
347:
348:                if (!oneEvent.find()) {
349:                    oneEvent.setField("Descrip", "User Download Activity");
350:                    oneEvent.add();
351:                    if (log.isInfoEnabled()) {
352:                        log.info("Added 'DOWNLOAD' event");
353:                    }
354:                } else {
355:                    if (log.isInfoEnabled()) {
356:                        log.info("'DOWNLOAD' event already set up");
357:                    }
358:                }
359:
360:                oneEvent.clear();
361:                oneEvent.setField("Event", "REGISTER");
362:
363:                if (!oneEvent.find()) {
364:                    oneEvent.setField("Descrip", "User Registration Activity");
365:                    oneEvent.add();
366:                    if (log.isInfoEnabled()) {
367:                        log.info("Added 'REGISTER' event");
368:                    }
369:                } else {
370:                    if (log.isInfoEnabled()) {
371:                        log.info("'REGISTER' event already set up");
372:                    }
373:                }
374:            } /* populateDefaultValues() */
375:
376:        } /* Event */
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