/******************************************************************************** Copyright (C) 1992-2006 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 QSQLFIELD_H#define QSQLFIELD_H#include <QtCore/qvariant.h>#include <QtCore/qstring.h>QT_BEGIN_HEADERQT_MODULE(Sql)class QSqlFieldPrivate;class Q_SQL_EXPORT QSqlField{public:    enum RequiredStatus { Unknown = -1, Optional = 0, Required = 1 };    QSqlField(const QString& fieldName = QString(),              QVariant::Type type = QVariant::Invalid);    QSqlField(const QSqlField& other);    QSqlField& operator=(const QSqlField& other);    bool operator==(const QSqlField& other) const;    inline bool operator!=(const QSqlField &other) const { return !operator==(other); }    ~QSqlField();    void setValue(const QVariant& value);    inline QVariant value() const    { return val; }    void setName(const QString& name);    QString name() const;    bool isNull() const;    void setReadOnly(bool readOnly);    bool isReadOnly() const;    void clear();    QVariant::Type type() const;    bool isAutoValue() const;    void setType(QVariant::Type type);    void setRequiredStatus(RequiredStatus status);    inline void setRequired(bool required)    { setRequiredStatus(required ? Required : Optional); }    void setLength(int fieldLength);    void setPrecision(int precision);    void setDefaultValue(const QVariant &value);    void setSqlType(int type);    void setGenerated(bool gen);    void setAutoValue(bool autoVal);    RequiredStatus requiredStatus() const;    int length() const;    int precision() const;    QVariant defaultValue() const;    int typeID() const;    bool isGenerated() const;    bool isValid() const;#ifdef QT3_SUPPORT    inline QT3_SUPPORT void setNull() { clear(); }#endifprivate:    void detach();    QVariant val;    QSqlFieldPrivate* d;};#ifndef QT_NO_DEBUG_STREAMQ_SQL_EXPORT QDebug operator<<(QDebug, const QSqlField &);#endifQT_END_HEADER#endif // QSQLFIELD_H