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qsqldatabase.h

/****************************************************************************
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the QtSql module of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 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.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef QSQLDATABASE_H
#define QSQLDATABASE_H

#include <QtCore/qstring.h>
#include <QtSql/qsql.h>
#ifdef QT3_SUPPORT
#include <QtSql/qsqlrecord.h>
#endif

QT_BEGIN_HEADER

QT_MODULE(Sql)

class QSqlError;
class QSqlDriver;
class QSqlIndex;
class QSqlRecord;
class QSqlQuery;
class QSqlDatabasePrivate;

00044 class Q_SQL_EXPORT QSqlDriverCreatorBase
{
public:
00047     virtual ~QSqlDriverCreatorBase() {}
    virtual QSqlDriver *createObject() const = 0;
};

template <class T>
00052 class QSqlDriverCreator : public QSqlDriverCreatorBase
{
public:
00055     QSqlDriver *createObject() const { return new T; }
};

00058 class Q_SQL_EXPORT QSqlDatabase
{
public:
    QSqlDatabase();
    QSqlDatabase(const QSqlDatabase &other);
    ~QSqlDatabase();

    QSqlDatabase &operator=(const QSqlDatabase &other);

    bool open();
    bool open(const QString& user, const QString& password);
    void close();
    bool isOpen() const;
    bool isOpenError() const;
    QStringList tables(QSql::TableType type = QSql::Tables) const;
    QSqlIndex primaryIndex(const QString& tablename) const;
    QSqlRecord record(const QString& tablename) const;
#ifdef QT3_SUPPORT
    QT3_SUPPORT QSqlRecord record(const QSqlQuery& query) const;
    inline QT3_SUPPORT QSqlRecord recordInfo(const QString& tablename) const
    { return record(tablename); }
    QT3_SUPPORT QSqlRecord recordInfo(const QSqlQuery& query) const;
#endif
    QSqlQuery exec(const QString& query = QString()) const;
    QSqlError lastError() const;
    bool isValid() const;

    bool transaction();
    bool commit();
    bool rollback();

    void setDatabaseName(const QString& name);
    void setUserName(const QString& name);
    void setPassword(const QString& password);
    void setHostName(const QString& host);
    void setPort(int p);
    void setConnectOptions(const QString& options = QString());
    QString databaseName() const;
    QString userName() const;
    QString password() const;
    QString hostName() const;
    QString driverName() const;
    int port() const;
    QString connectOptions() const;

    QSqlDriver* driver() const;

    QT_STATIC_CONST char *defaultConnection;

    static QSqlDatabase addDatabase(const QString& type,
                                 const QString& connectionName = QLatin1String(defaultConnection));
    static QSqlDatabase addDatabase(QSqlDriver* driver,
                                 const QString& connectionName = QLatin1String(defaultConnection));
    static QSqlDatabase cloneDatabase(const QSqlDatabase &other, const QString& connectionName);
    static QSqlDatabase database(const QString& connectionName = QLatin1String(defaultConnection),
                                 bool open = true);
    static void removeDatabase(const QString& connectionName);
    static bool contains(const QString& connectionName = QLatin1String(defaultConnection));
    static QStringList drivers();
    static QStringList connectionNames();
    static void registerSqlDriver(const QString &name, QSqlDriverCreatorBase *creator);
    static bool isDriverAvailable(const QString &name);

protected:
    explicit QSqlDatabase(const QString& type);
    explicit QSqlDatabase(QSqlDriver* driver);

private:
    friend class QSqlDatabasePrivate;
    QSqlDatabasePrivate *d;
};

#ifndef QT_NO_DEBUG_STREAM
Q_SQL_EXPORT QDebug operator<<(QDebug, const QSqlDatabase &);
#endif

QT_END_HEADER

#endif // QSQLDATABASE_H

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