2 * Copyright (C) 2010 Ixonos Plc.
3 * Copyright (C) 2011-2013 Philipp Spitzer, gregor herrmann, Stefan Stahl
5 * This file is part of ConfClerk.
7 * ConfClerk is free software: you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation, either version 2 of the License, or (at your option)
12 * ConfClerk is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * ConfClerk. If not, see <http://www.gnu.org/licenses/>.
25 #include <QSqlDatabase>
28 class SqlEngine : public QObject {
31 QString dbFilename; ///< database filename including path
32 QSqlDatabase db; ///< this may be private one day...
34 SqlEngine(QObject *aParent = NULL);
38 void open(); ///< emits a database error if failed.
39 bool isOpen() const {return db.isOpen();}
40 void close() {db.close();}
43 /// returns the "user_version" of the database schema
44 /// we return -1 for an empty database
45 /// the database has to be open
46 /// returns -2 if an error occurs and emits the error message
47 int dbSchemaVersion();
48 /// called by createOrUpdateDbSchema. Do not use directly. true for success.
49 bool updateDbSchemaVersion000To001();
50 /// called by createOrUpdateDbSchma. Do not use directly. true for success.
51 bool createCurrentDbSchema();
52 /// creates the current database schema if an empty database is found,
53 /// otherwise updates the schema if an old one is found. true for success.
54 bool createOrUpdateDbSchema();
55 /// Applies an SQL file
56 bool applySqlFile(const QString sqlFile);
58 // if a conferneceId != 0 is given, the confernce is updated instead of inserted.
59 void addConferenceToDB(QHash<QString,QString> &aConference, int conferenceId);
60 void addEventToDB(QHash<QString,QString> &aEvent);
61 void addPersonToDB(QHash<QString,QString> &aPerson);
62 void addLinkToDB(QHash<QString,QString> &aLink);
63 void addRoomToDB(QHash<QString,QString> &aRoom);
64 bool deleteConference(int id);
66 bool beginTransaction();
67 bool commitTransaction();
69 /// search Events for .... returns true if success
70 bool searchEvent(int conferenceId, const QHash<QString,QString> &columns, const QString &keyword);
72 static QString login(const QString &aDatabaseType, const QString &aDatabaseName);
73 /// emits a possible error message as signal. Does nothing if there was not last error
74 void emitSqlQueryError(const QSqlQuery& query);
77 /// emitted when a database errors occur
78 void dbError(const QString& message);
81 #endif /* SQLENGINE_H */