Source Code Cross Referenced for NewsMessage.java in  » Groupware » hipergate » com » knowgate » forums » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Groupware » hipergate » com.knowgate.forums 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:          Copyright (C) 2003  Know Gate S.L. All rights reserved.
003:                              C/Oña, 107 1º2 28050 Madrid (Spain)
004:
005:          Redistribution and use in source and binary forms, with or without
006:          modification, are permitted provided that the following conditions
007:          are met:
008:
009:          1. Redistributions of source code must retain the above copyright
010:             notice, this list of conditions and the following disclaimer.
011:
012:          2. The end-user documentation included with the redistribution,
013:             if any, must include the following acknowledgment:
014:             "This product includes software parts from hipergate
015:             (http://www.hipergate.org/)."
016:             Alternately, this acknowledgment may appear in the software itself,
017:             if and wherever such third-party acknowledgments normally appear.
018:
019:          3. The name hipergate must not be used to endorse or promote products
020:             derived from this software without prior written permission.
021:             Products derived from this software may not be called hipergate,
022:             nor may hipergate appear in their name, without prior written
023:             permission.
024:
025:          This library is distributed in the hope that it will be useful,
026:          but WITHOUT ANY WARRANTY; without even the implied warranty of
027:          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
028:
029:          You should have received a copy of hipergate License with this code;
030:          if not, visit http://www.hipergate.org or mail to info@hipergate.org
031:         */
032:
033:        package com.knowgate.forums;
034:
035:        import java.util.Date;
036:
037:        import java.io.IOException;
038:        import java.io.Reader;
039:
040:        import java.sql.SQLException;
041:        import java.sql.CallableStatement;
042:        import java.sql.Statement;
043:        import java.sql.PreparedStatement;
044:        import java.sql.ResultSet;
045:        import java.sql.ResultSetMetaData;
046:        import java.sql.Timestamp;
047:        import java.sql.Types;
048:
049:        import com.knowgate.debug.DebugFile;
050:        import com.knowgate.jdc.JDCConnection;
051:        import com.knowgate.misc.Gadgets;
052:
053:        import com.knowgate.dataobjs.DB;
054:        import com.knowgate.dataobjs.DBBind;
055:        import com.knowgate.dataobjs.DBPersist;
056:        import com.knowgate.dataobjs.DBSubset;
057:
058:        import com.knowgate.hipergate.Product;
059:
060:        /**
061:         * <p>NewsMessage</p>
062:         * @author Sergio Montoro Ten
063:         * @version 3.0
064:         */
065:        public class NewsMessage extends DBPersist {
066:
067:            /**
068:             * Create empty NewsMessage
069:             */
070:            public NewsMessage() {
071:                super (DB.k_newsmsgs, "NewsMessage");
072:            }
073:
074:            // ----------------------------------------------------------
075:
076:            /**
077:             * Post a Plain Text Message
078:             * @param oConn Database Conenction
079:             * @param sNewsGroupId GUID of NewsGroup for posting
080:             * @param sThreadId GUID of message thread (may be <b>null</b>)
081:             * @param dtStart Start publishing date (may be <b>null</b>)
082:             * @param dtEnd Expiration date (may be <b>null</b>)
083:             * @param iStatus STATUS_VALIDATED or STATUS_PENDING
084:             * @param sText Message Text
085:             * @return GUID of new message
086:             * @throws SQLException
087:             */
088:            public String post(JDCConnection oConn, String sNewsGroupId,
089:                    String sThreadId, Date dtStart, Date dtEnd, short iStatus,
090:                    String sText) throws SQLException {
091:
092:                if (DebugFile.trace) {
093:                    DebugFile.writeln("Begin NewsMessage.post([Connection], "
094:                            + sNewsGroupId + "," + sThreadId + ")");
095:                    DebugFile.incIdent();
096:                }
097:
098:                String sRetVal;
099:
100:                remove(DB.gu_newsgrp);
101:                if (sNewsGroupId != null)
102:                    put(DB.gu_newsgrp, sNewsGroupId);
103:
104:                remove(DB.gu_thread_msg);
105:                if (sThreadId != null)
106:                    put(DB.gu_thread_msg, sThreadId);
107:
108:                remove(DB.dt_start);
109:                if (dtStart != null)
110:                    put(DB.dt_start, dtStart);
111:
112:                remove(DB.dt_end);
113:                if (dtEnd != null)
114:                    put(DB.dt_end, dtEnd);
115:
116:                remove(DB.id_status);
117:                put(DB.id_status, iStatus);
118:
119:                remove(DB.tx_msg);
120:                if (sText != null)
121:                    put(DB.tx_msg, sText);
122:
123:                if (store(oConn))
124:                    sRetVal = getString(DB.gu_msg);
125:                else
126:                    sRetVal = null;
127:
128:                if (DebugFile.trace) {
129:                    DebugFile.decIdent();
130:                    DebugFile.writeln("End NewsMessage.post() : " + sRetVal);
131:                }
132:
133:                return sRetVal;
134:            } // post
135:
136:            // ----------------------------------------------------------
137:
138:            /**
139:             * Load message
140:             * @param oConn JDCConnection
141:             * @param sGuMsg String Message GUID
142:             * @return boolean <b>true</b> if message was successfully loaded,
143:             * <b>false</b> if no message with such GUID was found
144:             * @throws SQLException
145:             * @since 3.0
146:             */
147:            public boolean load(JDCConnection oConn, String sGuMsg)
148:                    throws SQLException {
149:                final int BufferSize = 2048;
150:                final String sSQL = "SELECT * FROM " + DB.k_newsmsgs
151:                        + " WHERE " + DB.gu_msg + "=?";
152:                boolean bRetVal;
153:                if (DebugFile.trace) {
154:                    DebugFile.writeln("Begin NewsMessage.load([Connection], "
155:                            + sGuMsg + ")");
156:                    DebugFile.incIdent();
157:                    DebugFile.writeln("Connection.prepareStatement(" + sSQL
158:                            + ")");
159:                }
160:                PreparedStatement oStmt = oConn
161:                        .prepareStatement(sSQL, ResultSet.TYPE_FORWARD_ONLY,
162:                                ResultSet.CONCUR_READ_ONLY);
163:                oStmt.setString(1, sGuMsg);
164:                ResultSet oRSet = oStmt.executeQuery();
165:                bRetVal = oRSet.next();
166:                if (bRetVal) {
167:                    ResultSetMetaData oMDat = oRSet.getMetaData();
168:                    int nCols = oMDat.getColumnCount();
169:                    int iType;
170:                    int iReaded;
171:                    for (int c = 1; c <= nCols; c++) {
172:                        iType = oMDat.getColumnType(c);
173:                        if ((iType != Types.LONGVARCHAR)
174:                                && (iType != Types.LONGVARBINARY)
175:                                && (iType != Types.CLOB)
176:                                && (iType != Types.BLOB)) {
177:                            put(oMDat.getColumnName(c).toLowerCase(), oRSet
178:                                    .getObject(c));
179:                        } else if (iType == Types.LONGVARCHAR) {
180:                            char Buffer[] = new char[BufferSize];
181:                            StringBuffer oBody = new StringBuffer();
182:                            Reader oRead = oRSet.getCharacterStream(c);
183:                            if (null != oRead) {
184:                                try {
185:                                    do {
186:                                        iReaded = oRead.read(Buffer, 0,
187:                                                BufferSize);
188:                                        if (iReaded > 0)
189:                                            oBody.append(Buffer, 0, iReaded);
190:                                    } while (BufferSize == iReaded);
191:                                    oRead.close();
192:                                } catch (IOException ioe) {
193:                                    try {
194:                                        oRSet.close();
195:                                    } catch (Exception ignore) {
196:                                    }
197:                                    try {
198:                                        oStmt.close();
199:                                    } catch (Exception ignore) {
200:                                    }
201:                                    throw new SQLException(ioe.getMessage());
202:                                }
203:                                put(oMDat.getColumnName(c).toLowerCase(), oBody
204:                                        .toString());
205:                            } // fi (oRead!=null)
206:                        }
207:                    } // next (c)
208:                } // fi (bRetVal)
209:                oRSet.close();
210:                oStmt.close();
211:
212:                if (DebugFile.trace) {
213:                    DebugFile.decIdent();
214:                    DebugFile.writeln("End NewsMessage.load() : "
215:                            + String.valueOf(bRetVal));
216:                }
217:
218:                return bRetVal;
219:            } // load
220:
221:            // ----------------------------------------------------------
222:
223:            /**
224:             * Get attachments
225:             * @param oConn JDCConnection
226:             * @return DBSubset listing attachments or <b>null</b> if this message has no attachments
227:             * @throws SQLException
228:             * @since 3.0
229:             */
230:            public DBSubset getAttachments(JDCConnection oConn)
231:                    throws SQLException {
232:                Product oProd;
233:                if (isNull(DB.gu_product))
234:                    return null;
235:                else {
236:                    oProd = new Product(getString(DB.gu_product));
237:                    return oProd.getLocations(oConn);
238:                }
239:            } // getAttachments
240:
241:            // ----------------------------------------------------------
242:
243:            public boolean load(JDCConnection oConn, Object[] aPK)
244:                    throws SQLException {
245:                return load(oConn, (String) aPK[0]);
246:            }
247:
248:            // ----------------------------------------------------------
249:
250:            /**
251:             * <p>Store NewsMessage</p>
252:             * Message is posted into a NewsGroup by setting gu_newsgrp property of
253:             * NewsMessage to the GUID of newsMessage that will contain it.<br>
254:             * If gu_msg is <b>null</b> then a new GUID will be assigned.<br>
255:             * If gu_thread_msg is <b>null</b> and gu_parent_msg is <b>null</b> then gu_thread_msg will be assigned the same value as gu_msg.<br>
256:             * If gu_thread_msg is <b>null</b> and gu_parent_msg is not <b>null</b> then gu_thread_msg will be assigned the same the parent message thread.<br>
257:             * If id_status is <b>null</b> then it will be assigned to NewsMessage.STATUS_PENDING.<br>
258:             * If id_msg_type is <b>null</b> then it will be assigned to "TXT" by default.<br>
259:             * If dt_start is <b>null</b> then message visibility will start inmediately.<br>
260:             * If dt_end is <b>null</b> then message will never expire.<br>
261:             * dt_published will always be set to the currents system date no matter with values it is passed as parameter.<br>
262:             * nu_thread_msgs will be updated in all messages from this thread by calling k_sp_count_thread_msgs stored procedure.<br>
263:             * Column k_newsgroups.dt_last_update is automatically set to the current date each time a new message is stored.
264:             * @param oConn Database Connection
265:             * @throws SQLException
266:             */
267:            public boolean store(JDCConnection oConn) throws SQLException {
268:                boolean bNewMsg;
269:                boolean bRetVal;
270:                String sMsgId;
271:                int nThreadMsgs;
272:                ResultSet oRSet;
273:                Statement oStmt;
274:                CallableStatement oCall;
275:                String sSQL;
276:
277:                Timestamp dtNow = new Timestamp(DBBind.getTime());
278:
279:                if (DebugFile.trace) {
280:                    DebugFile.writeln("Begin NewsMessage.store([Connection])");
281:                    DebugFile.incIdent();
282:                }
283:
284:                // Si no se especificó un identificador para el mensaje, entonces añadirlo automáticamente
285:                if (!AllVals.containsKey(DB.gu_msg)) {
286:                    bNewMsg = true;
287:                    sMsgId = Gadgets.generateUUID();
288:                    put(DB.gu_msg, sMsgId);
289:                } else {
290:                    bNewMsg = false;
291:                    sMsgId = getString(DB.gu_msg);
292:                }
293:
294:                if (!AllVals.containsKey(DB.id_status))
295:                    put(DB.id_status, STATUS_PENDING);
296:
297:                if (!AllVals.containsKey(DB.gu_thread_msg))
298:                    if (AllVals.containsKey(DB.gu_parent_msg)) {
299:                        oStmt = oConn.createStatement(
300:                                ResultSet.TYPE_FORWARD_ONLY,
301:                                ResultSet.CONCUR_READ_ONLY);
302:
303:                        if (DebugFile.trace)
304:                            DebugFile.writeln("Statement.executeQuery(SELECT "
305:                                    + DB.gu_thread_msg + " FROM "
306:                                    + DB.k_newsmsgs + " WHERE " + DB.gu_msg
307:                                    + "='"
308:                                    + getStringNull(DB.gu_parent_msg, "null")
309:                                    + "'");
310:
311:                        oRSet = oStmt.executeQuery("SELECT " + DB.gu_thread_msg
312:                                + " FROM " + DB.k_newsmsgs + " WHERE "
313:                                + DB.gu_msg + "='"
314:                                + getString(DB.gu_parent_msg) + "'");
315:                        if (oRSet.next())
316:                            put(DB.gu_thread_msg, oRSet.getString(1));
317:                        else
318:                            put(DB.gu_thread_msg, sMsgId);
319:                        oRSet.close();
320:                        oStmt.close();
321:                    } else
322:                        put(DB.gu_thread_msg, sMsgId);
323:
324:                if (oConn.getDataBaseProduct() == JDCConnection.DBMS_POSTGRESQL) {
325:                    sSQL = "SELECT k_sp_count_thread_msgs ('"
326:                            + getString(DB.gu_thread_msg) + "')";
327:
328:                    oStmt = oConn.createStatement(ResultSet.TYPE_FORWARD_ONLY,
329:                            ResultSet.CONCUR_READ_ONLY);
330:
331:                    if (DebugFile.trace)
332:                        DebugFile.writeln("Statement.executeQuery(" + sSQL
333:                                + ")");
334:
335:                    oRSet = oStmt.executeQuery(sSQL);
336:                    oRSet.next();
337:                    nThreadMsgs = oRSet.getInt(1);
338:                    oRSet.close();
339:                    oStmt.close();
340:                } else {
341:                    sSQL = "{call k_sp_count_thread_msgs(?,?)}";
342:                    if (DebugFile.trace)
343:                        DebugFile.writeln("CallableStatement.prepareCall("
344:                                + sSQL + ")");
345:                    oCall = oConn.prepareCall(sSQL);
346:                    oCall.setString(1, getString(DB.gu_thread_msg));
347:                    oCall.registerOutParameter(2, Types.INTEGER);
348:                    oCall.execute();
349:                    nThreadMsgs = oCall.getInt(2);
350:                    oCall.close();
351:                }
352:
353:                replace(DB.nu_thread_msgs, ++nThreadMsgs);
354:
355:                if (!AllVals.containsKey(DB.dt_start))
356:                    put(DB.dt_start, dtNow);
357:
358:                if (!AllVals.containsKey(DB.id_msg_type))
359:                    put(DB.id_msg_type, "TXT");
360:
361:                replace(DB.dt_published, dtNow);
362:
363:                bRetVal = super .store(oConn);
364:
365:                oStmt = oConn.createStatement();
366:                sSQL = "UPDATE " + DB.k_newsmsgs + " SET " + DB.nu_thread_msgs
367:                        + "=" + String.valueOf(nThreadMsgs) + " WHERE "
368:                        + DB.gu_thread_msg + "='" + getString(DB.gu_thread_msg)
369:                        + "'";
370:                if (DebugFile.trace)
371:                    DebugFile.writeln("Statement.executeUpdate(" + sSQL + ")");
372:                oStmt.executeUpdate(sSQL);
373:                oStmt.close();
374:
375:                if (!AllVals.containsKey(DB.gu_newsgrp)
376:                        && !sMsgId.equals(get(DB.gu_thread_msg))) {
377:
378:                    sSQL = "SELECT " + DB.gu_category + " FROM "
379:                            + DB.k_x_cat_objs + " WHERE " + DB.gu_object + "='"
380:                            + getStringNull(DB.gu_thread_msg, "null") + "'";
381:
382:                    oStmt = oConn.createStatement(ResultSet.TYPE_FORWARD_ONLY,
383:                            ResultSet.CONCUR_READ_ONLY);
384:
385:                    if (DebugFile.trace)
386:                        DebugFile.writeln("Statement.executeQuery(" + sSQL
387:                                + ")");
388:
389:                    oRSet = oStmt.executeQuery(sSQL);
390:
391:                    if (oRSet.next())
392:                        put(DB.gu_newsgrp, oRSet.getString(1));
393:
394:                    oRSet.close();
395:                    oStmt.close();
396:                }
397:
398:                if (bRetVal && AllVals.containsKey(DB.gu_newsgrp)) {
399:                    if (DebugFile.trace)
400:                        DebugFile
401:                                .writeln("Category.store() && containsKey(DB.gu_newsgrp)");
402:
403:                    if (bNewMsg) {
404:
405:                        if (DebugFile.trace)
406:                            DebugFile.writeln("new message");
407:
408:                        // Check whether or not dt_last_update column exists for backward compatibility with 1.x versions
409:                        boolean bHasLastUpdate;
410:                        try {
411:                            bHasLastUpdate = (((DBBind) (oConn.getPool()
412:                                    .getDatabaseBinding())).getDBTable(
413:                                    DB.k_newsgroups).getColumnByName(
414:                                    DB.dt_last_update) != null);
415:                        } catch (NullPointerException npe) {
416:                            bHasLastUpdate = true;
417:                        }
418:
419:                        if (bHasLastUpdate) {
420:                            PreparedStatement oUpdt = null;
421:                            sSQL = "UPDATE " + DB.k_newsgroups + " SET "
422:                                    + DB.dt_last_update + "=? WHERE "
423:                                    + DB.gu_newsgrp + "=?";
424:
425:                            if (DebugFile.trace)
426:                                DebugFile
427:                                        .writeln("Connection.prepareStatement ("
428:                                                + sSQL + ")");
429:
430:                            oUpdt = oConn.prepareStatement(sSQL);
431:                            oUpdt.setTimestamp(1, new Timestamp(new Date()
432:                                    .getTime()));
433:                            oUpdt.setObject(2, AllVals.get(DB.gu_newsgrp),
434:                                    java.sql.Types.VARCHAR);
435:                            oUpdt.executeUpdate();
436:                            oUpdt.close();
437:                            oUpdt = null;
438:                        } // fi (bHasLastUpdate)
439:                    } else {
440:                        sSQL = "DELETE FROM " + DB.k_x_cat_objs + " WHERE "
441:                                + DB.gu_category + "='"
442:                                + getString(DB.gu_newsgrp) + "' AND "
443:                                + DB.gu_object + "='" + sMsgId + "'";
444:                        oStmt = oConn.createStatement();
445:                        if (DebugFile.trace)
446:                            DebugFile
447:                                    .writeln("Statement.execute(" + sSQL + ")");
448:                        oStmt.execute(sSQL);
449:                        oStmt.close();
450:                    } // fi (!bNewMsg)
451:
452:                    sSQL = "INSERT INTO " + DB.k_x_cat_objs + "("
453:                            + DB.gu_category + "," + DB.gu_object + ","
454:                            + DB.id_class + "," + DB.bi_attribs + ","
455:                            + DB.od_position + ") VALUES ('"
456:                            + getString(DB.gu_newsgrp) + "','" + sMsgId + "',"
457:                            + String.valueOf(NewsMessage.ClassId) + ",0,NULL)";
458:                    oStmt = oConn.createStatement();
459:                    if (DebugFile.trace)
460:                        DebugFile.writeln("Statement.execute(" + sSQL + ")");
461:                    oStmt.execute(sSQL);
462:                    oStmt.close();
463:                } // fi (bRetVal && containsKey(gu_newsgrp))
464:
465:                if (DebugFile.trace) {
466:                    DebugFile.decIdent();
467:                    DebugFile.writeln("End NewsMessage.store() : "
468:                            + String.valueOf(bRetVal));
469:                }
470:
471:                return bRetVal;
472:            } // store
473:
474:            // ----------------------------------------------------------
475:
476:            /**
477:             * <p>Delete NewsMessage.</p>
478:             * Files attached to NewsMessage (stored as Products) are delete prior to
479:             * the NewsMessage itself. Then k_sp_del_newsmsg stored procedure is called.
480:             * @param oConn Database Connection
481:             * @throws SQLException
482:             */
483:            public boolean delete(JDCConnection oConn) throws SQLException {
484:                Product oProd;
485:                Statement oStmt;
486:                CallableStatement oCall;
487:                String sSQL;
488:
489:                if (DebugFile.trace) {
490:                    DebugFile.writeln("Begin NewsMessage.delete([Connection])");
491:                    DebugFile.incIdent();
492:                    DebugFile.writeln("gu_msg="
493:                            + getStringNull(DB.gu_msg, "null"));
494:                }
495:
496:                if (!isNull(DB.gu_product)) {
497:                    oProd = new Product(oConn, getString(DB.gu_product));
498:
499:                    oStmt = oConn.createStatement();
500:                    sSQL = "UPDATE " + DB.k_newsmsgs + " SET " + DB.gu_product
501:                            + "=NULL WHERE " + DB.gu_msg + "='"
502:                            + getString(DB.gu_msg) + "'";
503:                    if (DebugFile.trace)
504:                        DebugFile.writeln("Statement.executeUpdate(" + sSQL
505:                                + ")");
506:                    oStmt.executeUpdate(sSQL);
507:                    oStmt.close();
508:
509:                    oProd.delete(oConn);
510:
511:                    remove(DB.gu_product);
512:                } // fi
513:
514:                sSQL = "{ call k_sp_del_newsmsg ('" + getString(DB.gu_msg)
515:                        + "') }";
516:                if (DebugFile.trace)
517:                    DebugFile.writeln("Connection.prepareCall(" + sSQL + ")");
518:                oCall = oConn.prepareCall(sSQL);
519:                oCall.execute();
520:                oCall.close();
521:
522:                if (DebugFile.trace) {
523:                    DebugFile.decIdent();
524:                    DebugFile.writeln("End NewsMessage.delete() : true");
525:                }
526:
527:                return true;
528:            } // delete
529:
530:            // **********************************************************
531:            // Static Methods
532:
533:            /**
534:             * <p>Delete NewsMessage.</p>
535:             * Files attached to NewsMessage (stored as Products) are delete prior to
536:             * the NewsMessage itself. Then k_sp_del_newsmsg stored procedure is called.
537:             * @param oConn Database Connection
538:             * @param sNewsMsgGUID GUID of NewsMessage to be deleted
539:             * @throws SQLException
540:             */
541:            public static boolean delete(JDCConnection oConn,
542:                    String sNewsMsgGUID) throws SQLException {
543:                NewsMessage oMsg = new NewsMessage();
544:
545:                if (oMsg.load(oConn, new Object[] { sNewsMsgGUID }))
546:                    return oMsg.delete(oConn);
547:                else
548:                    return false;
549:            } // delete
550:
551:            // **********************************************************
552:            // Constantes Publicas
553:
554:            public static final short STATUS_VALIDATED = 0;
555:            public static final short STATUS_PENDING = 1;
556:            public static final short STATUS_DISCARDED = 2;
557:            public static final short STATUS_EXPIRED = 3;
558:
559:            public static final short ClassId = 31;
560:
561:        }
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