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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtSql module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 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 the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#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
bool isIdentifierEscaped(const QString &identifier, IdentifierType type) const; // ### Qt 5: make virtual
QString stripDelimiters(const QString &identifier, IdentifierType type) const; // ### Qt 5: make virtual
void setNumericalPrecisionPolicy(QSql::NumericalPrecisionPolicy precisionPolicy);
QSql::NumericalPrecisionPolicy numericalPrecisionPolicy() const;
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()
bool isIdentifierEscapedImplementation(const QString &identifier, IdentifierType type) const; // ### Qt 5: eliminate, see isIdentifierEscaped()
QString stripDelimitersImplementation(const QString &identifier, IdentifierType type) const; // ### Qt 5: eliminate, see stripDelimiters()
private:
Q_DISABLE_COPY(QSqlDriver)
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // QSQLDRIVER_H
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