* Copyright (C) 2013 Ivan Cukic <ivan.cukic(at)kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2,
* or (at your option) any later version, as published by the Free
* Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef UTILS_QSQLQUERYITERATOR_H
#define UTILS_QSQLQUERYITERATOR_H
#include <QSqlQuery>
#include <QVariant>
template <typename ResultSet>
class NextValueIterator {
public:
enum Type {
NormalIterator,
EndIterator
};
NextValueIterator(ResultSet &query, Type type = NormalIterator)
: m_query(query)
, m_type(type)
{
if (type != EndIterator) {
m_query.next();
}
}
inline bool operator!= (const NextValueIterator<ResultSet> &other) const
{
Q_UNUSED(other);
return m_query.isValid();
}
inline NextValueIterator<ResultSet> &operator*()
{
return *this;
}
inline QVariant operator[] (int index) const
{
return m_query.value(index);
}
inline QVariant operator[] (const QString &name) const
{
return m_query.value(name);
}
inline NextValueIterator<ResultSet> &operator ++()
{
m_query.next();
return *this;
}
private:
ResultSet &m_query;
Type m_type;
};
NextValueIterator<QSqlQuery> begin(QSqlQuery &query);
NextValueIterator<QSqlQuery> end(QSqlQuery &query);
#endif
