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161 lines
6.4 KiB
161 lines
6.4 KiB
14 years ago
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtSql module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial Usage
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QSQLDRIVER_H
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#define QSQLDRIVER_H
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#include <QtCore/qobject.h>
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#include <QtCore/qstring.h>
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#include <QtCore/qstringlist.h>
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#include <QtSql/qsql.h>
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#ifdef QT3_SUPPORT
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#include <QtSql/qsqlquery.h>
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#endif
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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QT_MODULE(Sql)
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class QSqlDatabase;
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class QSqlDriverPrivate;
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class QSqlError;
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class QSqlField;
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class QSqlIndex;
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class QSqlRecord;
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class QSqlResult;
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class QVariant;
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class Q_SQL_EXPORT QSqlDriver : public QObject
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{
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friend class QSqlDatabase;
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Q_OBJECT
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Q_DECLARE_PRIVATE(QSqlDriver)
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public:
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enum DriverFeature { Transactions, QuerySize, BLOB, Unicode, PreparedQueries,
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NamedPlaceholders, PositionalPlaceholders, LastInsertId,
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BatchOperations, SimpleLocking, LowPrecisionNumbers,
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EventNotifications, FinishQuery, MultipleResultSets };
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enum StatementType { WhereStatement, SelectStatement, UpdateStatement,
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InsertStatement, DeleteStatement };
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enum IdentifierType { FieldName, TableName };
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explicit QSqlDriver(QObject *parent=0);
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~QSqlDriver();
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virtual bool isOpen() const;
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bool isOpenError() const;
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virtual bool beginTransaction();
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virtual bool commitTransaction();
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virtual bool rollbackTransaction();
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virtual QStringList tables(QSql::TableType tableType) const;
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virtual QSqlIndex primaryIndex(const QString &tableName) const;
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virtual QSqlRecord record(const QString &tableName) const;
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#ifdef QT3_SUPPORT
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inline QT3_SUPPORT QSqlRecord record(const QSqlQuery& query) const
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{ return query.record(); }
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inline QT3_SUPPORT QSqlRecord recordInfo(const QString& tablename) const
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{ return record(tablename); }
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inline QT3_SUPPORT QSqlRecord recordInfo(const QSqlQuery& query) const
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{ return query.record(); }
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inline QT3_SUPPORT QString nullText() const { return QLatin1String("NULL"); }
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inline QT3_SUPPORT QString formatValue(const QSqlField *field, bool trimStrings = false) const
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{ return field ? formatValue(*field, trimStrings) : QString(); }
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#endif
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virtual QString formatValue(const QSqlField& field, bool trimStrings = false) const;
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virtual QString escapeIdentifier(const QString &identifier, IdentifierType type) const;
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virtual QString sqlStatement(StatementType type, const QString &tableName,
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const QSqlRecord &rec, bool preparedStatement) const;
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QSqlError lastError() const;
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virtual QVariant handle() const;
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virtual bool hasFeature(DriverFeature f) const = 0;
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virtual void close() = 0;
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virtual QSqlResult *createResult() const = 0;
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virtual bool open(const QString& db,
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const QString& user = QString(),
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const QString& password = QString(),
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const QString& host = QString(),
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int port = -1,
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const QString& connOpts = QString()) = 0;
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bool subscribeToNotification(const QString &name); // ### Qt 5: make virtual
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bool unsubscribeFromNotification(const QString &name); // ### Qt 5: make virtual
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QStringList subscribedToNotifications() const; // ### Qt 5: make virtual
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bool isIdentifierEscaped(const QString &identifier, IdentifierType type) const; // ### Qt 5: make virtual
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QString stripDelimiters(const QString &identifier, IdentifierType type) const; // ### Qt 5: make virtual
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void setNumericalPrecisionPolicy(QSql::NumericalPrecisionPolicy precisionPolicy);
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QSql::NumericalPrecisionPolicy numericalPrecisionPolicy() const;
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Q_SIGNALS:
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void notification(const QString &name);
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protected:
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virtual void setOpen(bool o);
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virtual void setOpenError(bool e);
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virtual void setLastError(const QSqlError& e);
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protected Q_SLOTS:
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bool subscribeToNotificationImplementation(const QString &name); // ### Qt 5: eliminate, see subscribeToNotification()
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bool unsubscribeFromNotificationImplementation(const QString &name); // ### Qt 5: eliminate, see unsubscribeFromNotification()
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QStringList subscribedToNotificationsImplementation() const; // ### Qt 5: eliminate, see subscribedNotifications()
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bool isIdentifierEscapedImplementation(const QString &identifier, IdentifierType type) const; // ### Qt 5: eliminate, see isIdentifierEscaped()
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QString stripDelimitersImplementation(const QString &identifier, IdentifierType type) const; // ### Qt 5: eliminate, see stripDelimiters()
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private:
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Q_DISABLE_COPY(QSqlDriver)
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};
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif // QSQLDRIVER_H
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