qsqldriver.h
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- /****************************************************************************
- **
- ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
- ** Contact: Qt Software Information (qt-info@nokia.com)
- **
- ** This file is part of the QtSql module of the Qt Toolkit.
- **
- ** Commercial Usage
- ** Licensees holding valid Qt Commercial licenses may use this file in
- ** accordance with the Qt Commercial License Agreement provided with the
- ** Software or, alternatively, in accordance with the terms contained in
- ** a written agreement between you and Nokia.
- **
- **
- ** GNU General Public License Usage
- ** Alternatively, this file may be used under the terms of the GNU
- ** General Public License versions 2.0 or 3.0 as published by the Free
- ** Software Foundation and appearing in the file LICENSE.GPL included in
- ** the packaging of this file. Please review the following information
- ** to ensure GNU General Public Licensing requirements will be met:
- ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
- ** http://www.gnu.org/copyleft/gpl.html. In addition, as a special
- ** exception, Nokia gives you certain additional rights. These rights
- ** are described in the Nokia Qt GPL Exception version 1.3, included in
- ** the file GPL_EXCEPTION.txt in this package.
- **
- ** Qt for Windows(R) Licensees
- ** As a special exception, Nokia, as the sole copyright holder for Qt
- ** Designer, grants users of the Qt/Eclipse Integration plug-in the
- ** right for the Qt/Eclipse Integration to link to functionality
- ** provided by Qt Designer and its related libraries.
- **
- ** If you are unsure which license is appropriate for your use, please
- ** contact the sales department at qt-sales@nokia.com.
- **
- ****************************************************************************/
- #ifndef QSQLDRIVER_H
- #define QSQLDRIVER_H
- #include <QtCore/qobject.h>
- #include <QtCore/qstring.h>
- #include <QtCore/qstringlist.h>
- #include <QtSql/qsql.h>
- #ifdef QT3_SUPPORT
- #include <QtSql/qsqlquery.h>
- #endif
- QT_BEGIN_HEADER
- QT_BEGIN_NAMESPACE
- QT_MODULE(Sql)
- class QSqlDatabase;
- class QSqlDriverPrivate;
- class QSqlError;
- class QSqlField;
- class QSqlIndex;
- class QSqlRecord;
- class QSqlResult;
- class QVariant;
- class Q_SQL_EXPORT QSqlDriver : public QObject
- {
- friend class QSqlDatabase;
- Q_OBJECT
- Q_DECLARE_PRIVATE(QSqlDriver)
- public:
- enum DriverFeature { Transactions, QuerySize, BLOB, Unicode, PreparedQueries,
- NamedPlaceholders, PositionalPlaceholders, LastInsertId,
- BatchOperations, SimpleLocking, LowPrecisionNumbers,
- EventNotifications, FinishQuery, MultipleResultSets };
- enum StatementType { WhereStatement, SelectStatement, UpdateStatement,
- InsertStatement, DeleteStatement };
- enum IdentifierType { FieldName, TableName };
- explicit QSqlDriver(QObject *parent=0);
- ~QSqlDriver();
- virtual bool isOpen() const;
- bool isOpenError() const;
- virtual bool beginTransaction();
- virtual bool commitTransaction();
- virtual bool rollbackTransaction();
- virtual QStringList tables(QSql::TableType tableType) const;
- virtual QSqlIndex primaryIndex(const QString &tableName) const;
- virtual QSqlRecord record(const QString &tableName) const;
- #ifdef QT3_SUPPORT
- inline QT3_SUPPORT QSqlRecord record(const QSqlQuery& query) const
- { return query.record(); }
- inline QT3_SUPPORT QSqlRecord recordInfo(const QString& tablename) const
- { return record(tablename); }
- inline QT3_SUPPORT QSqlRecord recordInfo(const QSqlQuery& query) const
- { return query.record(); }
- inline QT3_SUPPORT QString nullText() const { return QLatin1String("NULL"); }
- inline QT3_SUPPORT QString formatValue(const QSqlField *field, bool trimStrings = false) const
- { return field ? formatValue(*field, trimStrings) : QString(); }
- #endif
- virtual QString formatValue(const QSqlField& field, bool trimStrings = false) const;
- virtual QString escapeIdentifier(const QString &identifier, IdentifierType type) const;
- virtual QString sqlStatement(StatementType type, const QString &tableName,
- const QSqlRecord &rec, bool preparedStatement) const;
- QSqlError lastError() const;
- virtual QVariant handle() const;
- virtual bool hasFeature(DriverFeature f) const = 0;
- virtual void close() = 0;
- virtual QSqlResult *createResult() const = 0;
- virtual bool open(const QString& db,
- const QString& user = QString(),
- const QString& password = QString(),
- const QString& host = QString(),
- int port = -1,
- const QString& connOpts = QString()) = 0;
- bool subscribeToNotification(const QString &name); // ### Qt 5: make virtual
- bool unsubscribeFromNotification(const QString &name); // ### Qt 5: make virtual
- QStringList subscribedToNotifications() const; // ### Qt 5: make virtual
- Q_SIGNALS:
- void notification(const QString &name);
- protected:
- virtual void setOpen(bool o);
- virtual void setOpenError(bool e);
- virtual void setLastError(const QSqlError& e);
- protected Q_SLOTS:
- bool subscribeToNotificationImplementation(const QString &name); // ### Qt 5: eliminate, see subscribeToNotification()
- bool unsubscribeFromNotificationImplementation(const QString &name); // ### Qt 5: eliminate, see unsubscribeFromNotification()
- QStringList subscribedToNotificationsImplementation() const; // ### Qt 5: eliminate, see subscribedNotifications()
- private:
- Q_DISABLE_COPY(QSqlDriver)
- };
- QT_END_NAMESPACE
- QT_END_HEADER
- #endif // QSQLDRIVER_H