/****************************************************************************
**
** Copyright (C) 2011 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the QtSql module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE$
** 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 Digia.  
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
** 
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
****************************************************************************/

#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_BEGIN_NAMESPACE

QT_MODULE(Sql)

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

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

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

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;
    QString connectionName() const;
    void setNumericalPrecisionPolicy(QSql::NumericalPrecisionPolicy precisionPolicy);
    QSql::NumericalPrecisionPolicy numericalPrecisionPolicy() 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_NAMESPACE

QT_END_HEADER

#endif // QSQLDATABASE_H
