/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the QtSql module of the Qt Toolkit.

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** 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 Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

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** 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

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**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

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** If you have questions regarding the use of this file, please contact

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** $QT_END_LICENSE$

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****************************************************************************/

#ifndef QSQLRESULT_H

#define QSQLRESULT_H

#include <QtCore/qvariant.h>

#include <QtCore/qvector.h>

#include <QtSql/qsql.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Sql)

class QString;

class QSqlRecord;

template <typename T> class QVector;

class QVariant;

class QSqlDriver;

class QSqlError;

class QSqlResultPrivate;

class Q_SQL_EXPORT QSqlResult

{

    friend class QSqlQuery;

    friend class QSqlTableModelPrivate;

    friend class QSqlResultPrivate;

public:

    virtual ~QSqlResult();

    virtual QVariant handle() const;

protected:

    enum BindingSyntax {

        PositionalBinding,

        NamedBinding

#ifdef QT3_SUPPORT

        , BindByPosition = PositionalBinding,

        BindByName = NamedBinding

#endif

    };

    explicit QSqlResult(const QSqlDriver * db);

    int at() const;

    QString lastQuery() const;

    QSqlError lastError() const;

    bool isValid() const;

    bool isActive() const;

    bool isSelect() const;

    bool isForwardOnly() const;

    const QSqlDriver* driver() const;

    virtual void setAt(int at);

    virtual void setActive(bool a);

    virtual void setLastError(const QSqlError& e);

    virtual void setQuery(const QString& query);

    virtual void setSelect(bool s);

    virtual void setForwardOnly(bool forward);

    // prepared query support

    virtual bool exec();

    virtual bool prepare(const QString& query);

    virtual bool savePrepare(const QString& sqlquery);

    virtual void bindValue(int pos, const QVariant& val, QSql::ParamType type);

    virtual void bindValue(const QString& placeholder, const QVariant& val,

                           QSql::ParamType type);

    void addBindValue(const QVariant& val, QSql::ParamType type);

    QVariant boundValue(const QString& placeholder) const;

    QVariant boundValue(int pos) const;

    QSql::ParamType bindValueType(const QString& placeholder) const;

    QSql::ParamType bindValueType(int pos) const;

    int boundValueCount() const;

    QVector<QVariant>& boundValues() const;

    QString executedQuery() const;

    QString boundValueName(int pos) const;

    void clear();

    bool hasOutValues() const;

    BindingSyntax bindingSyntax() const;

    virtual QVariant data(int i) = 0;

    virtual bool isNull(int i) = 0;

    virtual bool reset(const QString& sqlquery) = 0;

    virtual bool fetch(int i) = 0;

    virtual bool fetchNext();

    virtual bool fetchPrevious();

    virtual bool fetchFirst() = 0;

    virtual bool fetchLast() = 0;

    virtual int size() = 0;

    virtual int numRowsAffected() = 0;

    virtual QSqlRecord record() const;

    virtual QVariant lastInsertId() const;

    enum VirtualHookOperation { BatchOperation, DetachFromResultSet, SetNumericalPrecision, NextResult };

    virtual void virtual_hook(int id, void *data);

    bool execBatch(bool arrayBind = false);

    void detachFromResultSet();

    void setNumericalPrecisionPolicy(QSql::NumericalPrecisionPolicy policy);

    QSql::NumericalPrecisionPolicy numericalPrecisionPolicy() const;

    bool nextResult();

private:

    QSqlResultPrivate* d;

    void resetBindCount(); // HACK

private:

    Q_DISABLE_COPY(QSqlResult)

};

QT_END_NAMESPACE

QT_END_HEADER

#endif // QSQLRESULT_H