Source Code Cross Referenced for GroupForumDAOImplJDBC.java in  » Forum » mvnforum-1.1 » com » mvnforum » db » jdbc » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Forum » mvnforum 1.1 » com.mvnforum.db.jdbc 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/db/jdbc/GroupForumDAOImplJDBC.java,v 1.10 2007/10/09 11:09:20 lexuanttkhtn Exp $
003:         * $Author: lexuanttkhtn $
004:         * $Revision: 1.10 $
005:         * $Date: 2007/10/09 11:09:20 $
006:         *
007:         * ====================================================================
008:         *
009:         * Copyright (C) 2002-2007 by MyVietnam.net
010:         *
011:         * All copyright notices regarding mvnForum MUST remain
012:         * intact in the scripts and in the outputted HTML.
013:         * The "powered by" text/logo with a link back to
014:         * http://www.mvnForum.com and http://www.MyVietnam.net in
015:         * the footer of the pages MUST remain visible when the pages
016:         * are viewed on the internet or intranet.
017:         *
018:         * This program is free software; you can redistribute it and/or modify
019:         * it under the terms of the GNU General Public License as published by
020:         * the Free Software Foundation; either version 2 of the License, or
021:         * any later version.
022:         *
023:         * This program is distributed in the hope that it will be useful,
024:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
025:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
026:         * GNU General Public License for more details.
027:         *
028:         * You should have received a copy of the GNU General Public License
029:         * along with this program; if not, write to the Free Software
030:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
031:         *
032:         * Support can be obtained from support forums at:
033:         * http://www.mvnForum.com/mvnforum/index
034:         *
035:         * Correspondence and Marketing Questions can be sent to:
036:         * info at MyVietnam net
037:         *
038:         * @author: Minh Nguyen
039:         * @author: Mai  Nguyen
040:         */
041:        package com.mvnforum.db.jdbc;
042:
043:        import java.sql.*;
044:        import java.util.ArrayList;
045:        import java.util.Collection;
046:
047:        import com.mvnforum.db.*;
048:        import net.myvietnam.mvncore.db.DBUtils;
049:        import net.myvietnam.mvncore.exception.*;
050:        import org.apache.commons.logging.Log;
051:        import org.apache.commons.logging.LogFactory;
052:
053:        public class GroupForumDAOImplJDBC implements  GroupForumDAO {
054:
055:            private static Log log = LogFactory
056:                    .getLog(GroupForumDAOImplJDBC.class);
057:
058:            // this variable will support caching if cache for this class is needed
059:            private static boolean m_dirty = true;
060:
061:            public GroupForumDAOImplJDBC() {
062:            }
063:
064:            protected static boolean isDirty() {
065:                return m_dirty;
066:            }
067:
068:            protected static void setDirty(boolean dirty) {
069:                m_dirty = dirty;
070:            }
071:
072:            public void findByPrimaryKey(int groupID, int forumID,
073:                    int permission) throws ObjectNotFoundException,
074:                    DatabaseException {
075:
076:                Connection connection = null;
077:                PreparedStatement statement = null;
078:                ResultSet resultSet = null;
079:                StringBuffer sql = new StringBuffer(512);
080:                sql.append("SELECT GroupID, ForumID, Permission");
081:                sql.append(" FROM " + TABLE_NAME);
082:                sql
083:                        .append(" WHERE GroupID = ? AND ForumID = ? AND Permission = ?");
084:                try {
085:                    connection = DBUtils.getConnection();
086:                    statement = connection.prepareStatement(sql.toString());
087:                    statement.setInt(1, groupID);
088:                    statement.setInt(2, forumID);
089:                    statement.setInt(3, permission);
090:                    resultSet = statement.executeQuery();
091:                    if (!resultSet.next()) {
092:                        throw new ObjectNotFoundException(
093:                                "Cannot find the primary key (" + groupID
094:                                        + ", " + forumID + ", " + permission
095:                                        + ") in table 'GroupForum'.");
096:                    }
097:                } catch (SQLException sqle) {
098:                    log.error("Sql Execution Error!", sqle);
099:                    throw new DatabaseException(
100:                            "Error executing SQL in GroupForumDAOImplJDBC.findByPrimaryKey.");
101:                } finally {
102:                    DBUtils.closeResultSet(resultSet);
103:                    DBUtils.closeStatement(statement);
104:                    DBUtils.closeConnection(connection);
105:                }
106:            }
107:
108:            /*
109:             * Included columns: GroupID, ForumID, Permission
110:             * Excluded columns:
111:             */
112:            public void create(int groupID, int forumID, int permission)
113:                    throws CreateException, DatabaseException,
114:                    DuplicateKeyException, ForeignKeyNotFoundException {
115:
116:                // @todo: comment this try-catch block if the needed columns dont have attribute 'include'
117:                // If this is the case, then it is highly recommended that you regenerate this method with the attribute 'include' turned on
118:                // However, if primary key is a auto_increament column, then you can safely delete this block
119:                try {
120:                    //Check if primary key already exists
121:                    findByPrimaryKey(groupID, forumID, permission);
122:                    //If so, then we have to throw an exception
123:                    throw new DuplicateKeyException(
124:                            "Primary key already exists. Cannot create new GroupForum with the same [GroupID, ForumID, Permission] ("
125:                                    + groupID
126:                                    + ", "
127:                                    + forumID
128:                                    + ", "
129:                                    + permission + ").");
130:                } catch (ObjectNotFoundException e) {
131:                    //Otherwise we can go ahead
132:                }
133:
134:                try {
135:                    // @todo: modify the parameter list as needed
136:                    // You may have to regenerate this method if the needed columns dont have attribute 'include'
137:                    DAOFactory.getForumDAO().findByPrimaryKey(forumID);
138:                } catch (ObjectNotFoundException e) {
139:                    throw new ForeignKeyNotFoundException(
140:                            "Foreign key refers to table 'Forum' does not exist. Cannot create new GroupForum.");
141:                }
142:
143:                try {
144:                    // @todo: modify the parameter list as needed
145:                    // You may have to regenerate this method if the needed columns dont have attribute 'include'
146:                    DAOFactory.getGroupsDAO().findByPrimaryKey(groupID);
147:                } catch (ObjectNotFoundException e) {
148:                    throw new ForeignKeyNotFoundException(
149:                            "Foreign key refers to table 'Groups' does not exist. Cannot create new GroupForum.");
150:                }
151:
152:                Connection connection = null;
153:                PreparedStatement statement = null;
154:                StringBuffer sql = new StringBuffer(512);
155:                sql.append("INSERT INTO " + TABLE_NAME
156:                        + " (GroupID, ForumID, Permission)");
157:                sql.append(" VALUES (?, ?, ?)");
158:                try {
159:                    connection = DBUtils.getConnection();
160:                    statement = connection.prepareStatement(sql.toString());
161:
162:                    statement.setInt(1, groupID);
163:                    statement.setInt(2, forumID);
164:                    statement.setInt(3, permission);
165:
166:                    if (statement.executeUpdate() != 1) {
167:                        throw new CreateException(
168:                                "Error adding a row into table 'GroupForum'.");
169:                    }
170:                    m_dirty = true;
171:                } catch (SQLException sqle) {
172:                    log.error("Sql Execution Error!", sqle);
173:                    throw new DatabaseException(
174:                            "Error executing SQL in GroupForumDAOImplJDBC.create.");
175:                } finally {
176:                    DBUtils.closeStatement(statement);
177:                    DBUtils.closeConnection(connection);
178:                }
179:            }
180:
181:            public void delete(int groupID, int forumID, int permission)
182:                    throws DatabaseException, ObjectNotFoundException {
183:
184:                Connection connection = null;
185:                PreparedStatement statement = null;
186:                StringBuffer sql = new StringBuffer(512);
187:                sql.append("DELETE FROM " + TABLE_NAME);
188:                sql
189:                        .append(" WHERE GroupID = ? AND ForumID = ? AND Permission = ?");
190:
191:                try {
192:                    connection = DBUtils.getConnection();
193:                    statement = connection.prepareStatement(sql.toString());
194:                    statement.setInt(1, groupID);
195:                    statement.setInt(2, forumID);
196:                    statement.setInt(3, permission);
197:                    if (statement.executeUpdate() != 1) {
198:                        throw new ObjectNotFoundException(
199:                                "Cannot delete a row in table GroupForum where primary key = ("
200:                                        + groupID + ", " + forumID + ", "
201:                                        + permission + ").");
202:                    }
203:                    m_dirty = true;
204:                } catch (SQLException sqle) {
205:                    log.error("Sql Execution Error!", sqle);
206:                    throw new DatabaseException(
207:                            "Error executing SQL in GroupForumDAOImplJDBC.delete.");
208:                } finally {
209:                    DBUtils.closeStatement(statement);
210:                    DBUtils.closeConnection(connection);
211:                }
212:            }
213:
214:            public void delete_inGroup(int groupID) throws DatabaseException {
215:
216:                Connection connection = null;
217:                PreparedStatement statement = null;
218:                StringBuffer sql = new StringBuffer(512);
219:                sql.append("DELETE FROM " + TABLE_NAME);
220:                sql.append(" WHERE GroupID = ? ");
221:
222:                try {
223:                    connection = DBUtils.getConnection();
224:                    statement = connection.prepareStatement(sql.toString());
225:                    statement.setInt(1, groupID);
226:
227:                    statement.executeUpdate();
228:                    m_dirty = true;
229:                } catch (SQLException sqle) {
230:                    log.error("Sql Execution Error!", sqle);
231:                    throw new DatabaseException(
232:                            "Error executing SQL in GroupForumDAOImplJDBC.delete_inGroup.");
233:                } finally {
234:                    DBUtils.closeStatement(statement);
235:                    DBUtils.closeConnection(connection);
236:                }
237:            }
238:
239:            public void delete_inForum(int forumID) throws DatabaseException {
240:
241:                Connection connection = null;
242:                PreparedStatement statement = null;
243:                StringBuffer sql = new StringBuffer(512);
244:                sql.append("DELETE FROM " + TABLE_NAME);
245:                sql.append(" WHERE ForumID = ? ");
246:
247:                try {
248:                    connection = DBUtils.getConnection();
249:                    statement = connection.prepareStatement(sql.toString());
250:                    statement.setInt(1, forumID);
251:
252:                    statement.executeUpdate();
253:                    m_dirty = true;
254:                } catch (SQLException sqle) {
255:                    log.error("Sql Execution Error!", sqle);
256:                    throw new DatabaseException(
257:                            "Error executing SQL in GroupForumDAOImplJDBC.delete_inForum.");
258:                } finally {
259:                    DBUtils.closeStatement(statement);
260:                    DBUtils.closeConnection(connection);
261:                }
262:            }
263:
264:            /************************************************
265:             * Customized methods come below
266:             ************************************************/
267:
268:            /*
269:             * Included columns: Permission
270:             * Excluded columns: GroupID, ForumID
271:             */
272:            public Collection getBeans_inGroupForum(int groupID, int forumID)
273:                    throws DatabaseException {
274:
275:                Connection connection = null;
276:                PreparedStatement statement = null;
277:                ResultSet resultSet = null;
278:                Collection retValue = new ArrayList();
279:                StringBuffer sql = new StringBuffer(512);
280:                sql.append("SELECT Permission");
281:                sql.append(" FROM " + TABLE_NAME);
282:                sql.append(" WHERE GroupID = ? AND ForumID = ?"); // @todo: uncomment as needed
283:                //sql.append(" ORDER BY ColumnName ASC|DESC "); // @todo: uncomment as needed
284:                try {
285:                    connection = DBUtils.getConnection();
286:                    statement = connection.prepareStatement(sql.toString());
287:                    statement.setInt(1, groupID);
288:                    statement.setInt(2, forumID);
289:
290:                    resultSet = statement.executeQuery();
291:                    while (resultSet.next()) {
292:                        GroupForumBean bean = new GroupForumBean();
293:                        bean.setGroupID(groupID);
294:                        bean.setForumID(forumID);
295:                        bean.setPermission(resultSet.getInt("Permission"));
296:                        retValue.add(bean);
297:                    }
298:                    return retValue;
299:                } catch (SQLException sqle) {
300:                    log.error("Sql Execution Error!", sqle);
301:                    throw new DatabaseException(
302:                            "Error executing SQL in GroupForumDAOImplJDBC.getBeans_inGroupForum.");
303:                } finally {
304:                    DBUtils.closeResultSet(resultSet);
305:                    DBUtils.closeStatement(statement);
306:                    DBUtils.closeConnection(connection);
307:                }
308:            }
309:
310:            /*
311:             * Included columns: GroupID, ForumID, Permission
312:             * Excluded columns:
313:             */
314:            public Collection getBeans_inForum(int forumID)
315:                    throws DatabaseException {
316:
317:                Connection connection = null;
318:                PreparedStatement statement = null;
319:                ResultSet resultSet = null;
320:                Collection retValue = new ArrayList();
321:                StringBuffer sql = new StringBuffer(512);
322:                sql.append("SELECT GroupID, ForumID, Permission");
323:                sql.append(" FROM " + TABLE_NAME);
324:                sql.append(" WHERE ForumID = ? ");
325:                sql.append(" ORDER BY GroupID ");
326:                try {
327:                    connection = DBUtils.getConnection();
328:                    statement = connection.prepareStatement(sql.toString());
329:                    statement.setInt(1, forumID);
330:
331:                    resultSet = statement.executeQuery();
332:                    while (resultSet.next()) {
333:                        GroupForumBean bean = new GroupForumBean();
334:                        bean.setGroupID(resultSet.getInt("GroupID"));
335:                        bean.setForumID(resultSet.getInt("ForumID"));
336:                        bean.setPermission(resultSet.getInt("Permission"));
337:                        retValue.add(bean);
338:                    }
339:                    return retValue;
340:                } catch (SQLException sqle) {
341:                    sqle.printStackTrace();
342:                    throw new DatabaseException(
343:                            "Error executing SQL in GroupForumDAOImplJDBC.getBeans_inForum.");
344:                } finally {
345:                    DBUtils.closeResultSet(resultSet);
346:                    DBUtils.closeStatement(statement);
347:                    DBUtils.closeConnection(connection);
348:                }
349:            }
350:
351:            /*
352:             * Included columns: GroupID, ForumID, Permission
353:             * Excluded columns:
354:             */
355:            public Collection getBeans_inGroup(int groupID)
356:                    throws DatabaseException {
357:
358:                Connection connection = null;
359:                PreparedStatement statement = null;
360:                ResultSet resultSet = null;
361:                Collection retValue = new ArrayList();
362:                StringBuffer sql = new StringBuffer(512);
363:                sql.append("SELECT GroupID, ForumID, Permission");
364:                sql.append(" FROM " + TABLE_NAME);
365:                sql.append(" WHERE GroupID = ? ");
366:                sql.append(" ORDER BY ForumID ");
367:
368:                try {
369:                    connection = DBUtils.getConnection();
370:                    statement = connection.prepareStatement(sql.toString());
371:                    statement.setInt(1, groupID);
372:
373:                    resultSet = statement.executeQuery();
374:                    while (resultSet.next()) {
375:                        GroupForumBean bean = new GroupForumBean();
376:                        bean.setGroupID(resultSet.getInt("GroupID"));
377:                        bean.setForumID(resultSet.getInt("ForumID"));
378:                        bean.setPermission(resultSet.getInt("Permission"));
379:                        retValue.add(bean);
380:                    }
381:                    return retValue;
382:                } catch (SQLException sqle) {
383:                    sqle.printStackTrace();
384:                    throw new DatabaseException(
385:                            "Error executing SQL in GroupForumDAOImplJDBC.getBeans_inGroup.");
386:                } finally {
387:                    DBUtils.closeResultSet(resultSet);
388:                    DBUtils.closeStatement(statement);
389:                    DBUtils.closeConnection(connection);
390:                }
391:            }
392:
393:            /*
394:             * Included columns: GroupID
395:             * Excluded columns: Permission
396:             */
397:            public Collection getDistinctGroups() throws DatabaseException {
398:
399:                Connection connection = null;
400:                PreparedStatement statement = null;
401:                ResultSet resultSet = null;
402:                Collection retValue = new ArrayList();
403:                StringBuffer sql = new StringBuffer(512);
404:                sql.append("SELECT DISTINCT GroupID");
405:                sql.append(" FROM " + TABLE_NAME);
406:                sql.append(" ORDER BY GroupID ASC ");
407:                try {
408:                    connection = DBUtils.getConnection();
409:                    statement = connection.prepareStatement(sql.toString());
410:                    resultSet = statement.executeQuery();
411:                    while (resultSet.next()) {
412:                        GroupForumBean bean = new GroupForumBean();
413:                        bean.setGroupID(resultSet.getInt("GroupID"));
414:                        retValue.add(bean);
415:                    }
416:                    return retValue;
417:                } catch (SQLException sqle) {
418:                    log.error("Sql Execution Error!", sqle);
419:                    throw new DatabaseException(
420:                            "Error executing SQL in GroupForumDAOImplJDBC.getDistinctGroups.");
421:                } finally {
422:                    DBUtils.closeResultSet(resultSet);
423:                    DBUtils.closeStatement(statement);
424:                    DBUtils.closeConnection(connection);
425:                }
426:            }
427:        }// end of class GroupForumDAOImplJDBC
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