qsqlresult.h
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上传日期:2022-06-22
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- /****************************************************************************
- **
- ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
- ** Contact: Qt Software Information (qt-info@nokia.com)
- **
- ** This file is part of the QtSql module of the Qt Toolkit.
- **
- ** Commercial Usage
- ** 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 Nokia.
- **
- **
- ** GNU General Public License Usage
- ** Alternatively, this file may be used under the terms of the GNU
- ** General Public License versions 2.0 or 3.0 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.fsf.org/licensing/licenses/info/GPLv2.html and
- ** http://www.gnu.org/copyleft/gpl.html. In addition, as a special
- ** exception, Nokia gives you certain additional rights. These rights
- ** are described in the Nokia Qt GPL Exception version 1.3, included in
- ** the file GPL_EXCEPTION.txt in this package.
- **
- ** Qt for Windows(R) Licensees
- ** As a special exception, Nokia, as the sole copyright holder for Qt
- ** Designer, grants users of the Qt/Eclipse Integration plug-in the
- ** right for the Qt/Eclipse Integration to link to functionality
- ** provided by Qt Designer and its related libraries.
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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);
- bool nextResult();
- private:
- QSqlResultPrivate* d;
- void resetBindCount(); // HACK
- private:
- Q_DISABLE_COPY(QSqlResult)
- };
- QT_END_NAMESPACE
- QT_END_HEADER
- #endif // QSQLRESULT_H