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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QSQLDRIVER_H
#define QSQLDRIVER_H
#include <QtSql/qtsqlglobal.h>
#include <QtCore/qobject.h>
#include <QtCore/qstring.h>
#include <QtCore/qstringlist.h>
QT_BEGIN_NAMESPACE
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;
friend class QSqlResultPrivate;
Q_OBJECT
Q_DECLARE_PRIVATE(QSqlDriver)
public:
enum DriverFeature { Transactions, QuerySize, BLOB, Unicode, PreparedQueries,
NamedPlaceholders, PositionalPlaceholders, LastInsertId,
BatchOperations, SimpleLocking, LowPrecisionNumbers,
EventNotifications, FinishQuery, MultipleResultSets, CancelQuery };
enum StatementType { WhereStatement, SelectStatement, UpdateStatement,
InsertStatement, DeleteStatement };
enum IdentifierType { FieldName, TableName };
enum NotificationSource { UnknownSource, SelfSource, OtherSource };
enum DbmsType {
UnknownDbms,
MSSqlServer,
MySqlServer,
PostgreSQL,
Oracle,
Sybase,
SQLite,
Interbase,
DB2
};
explicit QSqlDriver(QObject *parent = nullptr);
~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;
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;
virtual bool subscribeToNotification(const QString &name);
virtual bool unsubscribeFromNotification(const QString &name);
virtual QStringList subscribedToNotifications() const;
virtual bool isIdentifierEscaped(const QString &identifier, IdentifierType type) const;
virtual QString stripDelimiters(const QString &identifier, IdentifierType type) const;
void setNumericalPrecisionPolicy(QSql::NumericalPrecisionPolicy precisionPolicy);
QSql::NumericalPrecisionPolicy numericalPrecisionPolicy() const;
DbmsType dbmsType() const;
virtual int maximumIdentifierLength(IdentifierType type) const;
public Q_SLOTS:
virtual bool cancelQuery();
Q_SIGNALS:
void notification(const QString &name, QSqlDriver::NotificationSource source, const QVariant &payload);
protected:
QSqlDriver(QSqlDriverPrivate &dd, QObject *parent = nullptr);
virtual void setOpen(bool o);
virtual void setOpenError(bool e);
virtual void setLastError(const QSqlError& e);
private:
Q_DISABLE_COPY(QSqlDriver)
};
QT_END_NAMESPACE
#endif // QSQLDRIVER_H
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