QxOrm  1.4.5
C++ Object Relational Mapping library

Support std::optional<T> class (requires a C++17 compiler) to manage NULL database value, this header should be included just after <QxOrm.h> header file (ideally in a precompiled header) More...

#include <optional>
#include <QtCore/qdatastream.h>
#include <QxOrm.h>
#include <QxTraits/construct_null_qvariant.h>

Go to the source code of this file.

Classes

struct  qx::trait::get_sql_type< std::optional< T > >
struct  qx::cvt::detail::QxConvert_ToJson< std::optional< T > >
struct  qx::cvt::detail::QxConvert_FromJson< std::optional< T > >
struct  qx::cvt::detail::QxConvert_ToString< std::optional< T > >
struct  qx::cvt::detail::QxConvert_FromString< std::optional< T > >
struct  qx::cvt::detail::QxConvert_ToVariant< std::optional< T > >
struct  qx::cvt::detail::QxConvert_FromVariant< std::optional< T > >

Namespaces

namespace  qx
 

Root namespace for all QxOrm library features.


namespace  qx::trait
 

QxOrm library traits (template metaprogramming) not available in boost::type_traits library.


namespace  qx::cvt
 

Provide global functions to convert any kind of objects to/from QString and QVariant format.


namespace  qx::cvt::detail
 

Internal helper tools for qx::cvt namespace.


Functions

template<typename T >
QDataStream & operator<< (QDataStream &stream, const std::optional< T > &t)
template<typename T >
QDataStream & operator>> (QDataStream &stream, std::optional< T > &t)

Detailed Description

Support std::optional<T> class (requires a C++17 compiler) to manage NULL database value, this header should be included just after <QxOrm.h> header file (ideally in a precompiled header)

Author:
Lionel Marty

Definition in file QxStdOptional.h.


Function Documentation

template<typename T >
QDataStream& operator<< ( QDataStream &  stream,
const std::optional< T > &  t 
)

Definition at line 55 of file QxStdOptional.h.

template<typename T >
QDataStream& operator>> ( QDataStream &  stream,
std::optional< T > &  t 
)

Definition at line 64 of file QxStdOptional.h.