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178
include/QxExtras/QxBoostOptionalOnly.h
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178
include/QxExtras/QxBoostOptionalOnly.h
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/****************************************************************************
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**
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** https://www.qxorm.com/
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** Copyright (C) 2013 XDL Team (ic-east.com)
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**
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** This file is part of the QxOrm library
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**
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** This software is provided 'as-is', without any express or implied
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** warranty. In no event will the authors be held liable for any
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** damages arising from the use of this software
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**
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** Commercial Usage
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** Licensees holding valid commercial QxOrm licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and XDL Team
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file 'license.gpl3.txt' included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met : http://www.gnu.org/copyleft/gpl.html
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**
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** If you are unsure which license is appropriate for your use, or
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** if you have questions regarding the use of this file, please contact :
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** ic-east.com
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**
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****************************************************************************/
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#ifndef _QX_ENABLE_BOOST
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#ifndef _QX_BOOST_OPTIONAL_ONLY_H_
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#define _QX_BOOST_OPTIONAL_ONLY_H_
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#ifdef _MSC_VER
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#pragma once
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#endif
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/*!
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* \file QxBoostOptionalOnly.h
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* \author XDL Team
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* \ingroup QxExtras
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* \brief Provides support for boost::optional<T> to manage NULL values even if _QX_ENABLE_BOOST compilation option is not defined : so this header file enables just boost::optional feature and should be included just after <QxOrm.h> header file (ideally in a precompiled header)
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*/
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#include <boost/optional.hpp>
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#include <boost/none.hpp>
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#include <QxOrm.h>
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#define _QX_ENABLE_BOOST
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#include <QxSerialize/QDataStream/QxSerializeQDataStream_boost_optional.h>
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#undef _QX_ENABLE_BOOST
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#include <QxTraits/construct_null_qvariant.h>
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QX_REGISTER_CLASS_NAME_TEMPLATE_1(boost::optional)
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namespace qx
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{
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namespace trait
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{
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template <typename T>
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struct get_sql_type<boost::optional<T>>
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{
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static inline const char *get() { return qx::trait::get_sql_type<T>::get(); }
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};
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} // namespace trait
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} // namespace qx
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namespace qx
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{
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namespace cvt
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{
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namespace detail
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{
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#ifndef _QX_NO_JSON
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template <typename T>
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struct QxConvert_ToJson<boost::optional<T>>
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{
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static inline QJsonValue toJson(const boost::optional<T> &t, const QString &format)
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{
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if (t)
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{
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return qx::cvt::to_json((*t), format);
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};
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return QJsonValue();
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}
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};
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template <typename T>
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struct QxConvert_FromJson<boost::optional<T>>
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{
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static inline qx_bool fromJson(const QJsonValue &j, boost::optional<T> &t, const QString &format)
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{
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if (j.isNull())
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{
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t = boost::none;
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return qx_bool(true);
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}
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else if (!t)
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{
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t = T();
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}
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return qx::cvt::from_json(j, (*t), format);
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}
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};
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#endif // _QX_NO_JSON
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template <typename T>
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struct QxConvert_ToString<boost::optional<T>>
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{
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static inline QString toString(const boost::optional<T> &t, const QString &format, int index, qx::cvt::context::ctx_type ctx)
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{
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if (t)
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{
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return qx::cvt::to_string((*t), format, index, ctx);
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};
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return QString();
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}
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};
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template <typename T>
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struct QxConvert_FromString<boost::optional<T>>
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{
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static inline qx_bool fromString(const QString &s, boost::optional<T> &t, const QString &format, int index, qx::cvt::context::ctx_type ctx)
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{
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if (!t)
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{
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t = T();
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};
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return qx::cvt::from_string(s, (*t), format, index, ctx);
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}
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};
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template <typename T>
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struct QxConvert_ToVariant<boost::optional<T>>
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{
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static inline QVariant toVariant(const boost::optional<T> &t, const QString &format, int index, qx::cvt::context::ctx_type ctx)
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{
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if (t)
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{
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return qx::cvt::to_variant((*t), format, index, ctx);
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};
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return qx::trait::construct_null_qvariant<T>::get();
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}
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};
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template <typename T>
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struct QxConvert_FromVariant<boost::optional<T>>
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{
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static inline qx_bool fromVariant(const QVariant &v, boost::optional<T> &t, const QString &format, int index, qx::cvt::context::ctx_type ctx)
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{
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if (v.isNull())
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{
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t = boost::none;
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return qx_bool(true);
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}
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else if (!t)
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{
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t = T();
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}
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return qx::cvt::from_variant(v, (*t), format, index, ctx);
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}
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};
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} // namespace detail
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} // namespace cvt
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} // namespace qx
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#endif // _QX_BOOST_OPTIONAL_ONLY_H_
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#endif // _QX_ENABLE_BOOST
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202
include/QxExtras/QxStdOptional.h
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202
include/QxExtras/QxStdOptional.h
Normal file
@@ -0,0 +1,202 @@
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/****************************************************************************
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**
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** https://www.qxorm.com/
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** Copyright (C) 2013 XDL Team (ic-east.com)
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**
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** This file is part of the QxOrm library
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**
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** This software is provided 'as-is', without any express or implied
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** warranty. In no event will the authors be held liable for any
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** damages arising from the use of this software
|
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**
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** Commercial Usage
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** Licensees holding valid commercial QxOrm licenses may use this file in
|
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** accordance with the commercial license agreement provided with the
|
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** Software or, alternatively, in accordance with the terms contained in
|
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** a written agreement between you and XDL Team
|
||||
**
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** GNU General Public License Usage
|
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** Alternatively, this file may be used under the terms of the GNU
|
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** General Public License version 3.0 as published by the Free Software
|
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** Foundation and appearing in the file 'license.gpl3.txt' included in the
|
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
|
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** met : http://www.gnu.org/copyleft/gpl.html
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**
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** If you are unsure which license is appropriate for your use, or
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** if you have questions regarding the use of this file, please contact :
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** ic-east.com
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**
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****************************************************************************/
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#ifndef _QX_STD_OPTIONAL_H_
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#define _QX_STD_OPTIONAL_H_
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#ifdef _MSC_VER
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#pragma once
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#endif
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/*!
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* \file QxStdOptional.h
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* \author XDL Team
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* \ingroup QxExtras
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* \brief 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)
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*/
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#include <optional>
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#include <QtCore/qdatastream.h>
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#include <QxOrm.h>
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#include <QxTraits/construct_null_qvariant.h>
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template <typename T>
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QDataStream &operator<<(QDataStream &stream, const std::optional<T> &t)
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{
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qint8 iHasData = (t ? 1 : 0);
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stream << iHasData;
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if (t)
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{
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stream << (*t);
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}
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return stream;
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}
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template <typename T>
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QDataStream &operator>>(QDataStream &stream, std::optional<T> &t)
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{
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qint8 iHasData = 0;
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stream >> iHasData;
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if (iHasData)
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{
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t = T();
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stream >> (*t);
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}
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else
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{
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t = std::optional<T>();
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}
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return stream;
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}
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QX_REGISTER_CLASS_NAME_TEMPLATE_1(std::optional)
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namespace qx
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{
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namespace trait
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{
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template <typename T>
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struct get_sql_type<std::optional<T>>
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{
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static inline const char *get() { return qx::trait::get_sql_type<T>::get(); }
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};
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} // namespace trait
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} // namespace qx
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namespace qx
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{
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namespace cvt
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{
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namespace detail
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{
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#ifndef _QX_NO_JSON
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template <typename T>
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struct QxConvert_ToJson<std::optional<T>>
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{
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static inline QJsonValue toJson(const std::optional<T> &t, const QString &format)
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{
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if (t)
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{
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return qx::cvt::to_json((*t), format);
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};
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return QJsonValue();
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}
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};
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template <typename T>
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struct QxConvert_FromJson<std::optional<T>>
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{
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static inline qx_bool fromJson(const QJsonValue &j, std::optional<T> &t, const QString &format)
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{
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if (j.isNull())
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{
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t = std::optional<T>();
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return qx_bool(true);
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}
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else if (!t)
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{
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t = T();
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}
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return qx::cvt::from_json(j, (*t), format);
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}
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};
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#endif // _QX_NO_JSON
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template <typename T>
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struct QxConvert_ToString<std::optional<T>>
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{
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static inline QString toString(const std::optional<T> &t, const QString &format, int index, qx::cvt::context::ctx_type ctx)
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{
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if (t)
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{
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return qx::cvt::to_string((*t), format, index, ctx);
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};
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return QString();
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}
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};
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template <typename T>
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struct QxConvert_FromString<std::optional<T>>
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{
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static inline qx_bool fromString(const QString &s, std::optional<T> &t, const QString &format, int index, qx::cvt::context::ctx_type ctx)
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{
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if (!t)
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{
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t = T();
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};
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return qx::cvt::from_string(s, (*t), format, index, ctx);
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}
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};
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template <typename T>
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struct QxConvert_ToVariant<std::optional<T>>
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{
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static inline QVariant toVariant(const std::optional<T> &t, const QString &format, int index, qx::cvt::context::ctx_type ctx)
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{
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if (t)
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{
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return qx::cvt::to_variant((*t), format, index, ctx);
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};
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return qx::trait::construct_null_qvariant<T>::get();
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}
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};
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template <typename T>
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struct QxConvert_FromVariant<std::optional<T>>
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{
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static inline qx_bool fromVariant(const QVariant &v, std::optional<T> &t, const QString &format, int index, qx::cvt::context::ctx_type ctx)
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{
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if (v.isNull())
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{
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t = std::optional<T>();
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return qx_bool(true);
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}
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else if (!t)
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{
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t = T();
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}
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return qx::cvt::from_variant(v, (*t), format, index, ctx);
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}
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};
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} // namespace detail
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} // namespace cvt
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} // namespace qx
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#endif // _QX_STD_OPTIONAL_H_
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