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169 lines
6.0 KiB
169 lines
6.0 KiB
3 days ago
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/****************************************************************************
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**
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** https://www.qxorm.com/
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** Copyright (C) 2013 Lionel Marty (contact@qxorm.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 Lionel Marty
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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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** contact@qxorm.com
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**
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****************************************************************************/
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namespace qx {
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namespace dao {
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namespace detail {
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template <class T>
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struct QxDao_Save_Generic
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{
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static QSqlError save(T & t, QSqlDatabase * pDatabase)
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{
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qx::dao::detail::QxDao_Helper<T> dao(t, pDatabase, "save", new qx::QxSqlQueryBuilder_Update<T>());
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if (! dao.isValid()) { return dao.error(); }
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if (! pDatabase) { dao.transaction(); }
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dao.quiet();
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qx_bool bExist = dao.isValidPrimaryKey(t);
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if (bExist) { bExist = qx::dao::exist(t, (& dao.database())); }
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if (bExist) { dao.updateError(qx::dao::update(t, (& dao.database()))); }
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else { dao.updateError(qx::dao::insert(t, (& dao.database()))); }
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return dao.error();
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}
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};
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template <class T>
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struct QxDao_Save_Container
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{
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static QSqlError save(T & t, QSqlDatabase * pDatabase)
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{
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typedef typename qx::trait::generic_container<T>::type_value_qx type_item;
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if (qx::trait::generic_container<T>::size(t) <= 0) { return QSqlError(); }
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qx::dao::detail::QxDao_Helper_Container<T> dao(t, pDatabase, "save", new qx::QxSqlQueryBuilder_Update<type_item>());
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if (! dao.isValid()) { return dao.error(); }
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if (! pDatabase) { dao.transaction(); }
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dao.quiet();
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for (typename T::iterator it = t.begin(); it != t.end(); ++it)
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{ if (! saveItem((* it), dao)) { return dao.error(); } }
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return dao.error();
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}
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private:
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template <typename U>
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static inline bool saveItem(U & item, qx::dao::detail::QxDao_Helper_Container<T> & dao)
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{
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bool bSaveOk = saveItem_Helper<U, std::is_pointer<U>::value || qx::trait::is_smart_ptr<U>::value>::save(item, dao);
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if (bSaveOk) { qx::dao::detail::QxDao_Keep_Original<U>::backup(item); }
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return bSaveOk;
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}
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template <typename U, bool bIsPointer /* = true */>
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struct saveItem_Helper
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{
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static inline bool save(U & item, qx::dao::detail::QxDao_Helper_Container<T> & dao)
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{ return (item ? qx::dao::detail::QxDao_Save_Container<T>::saveItem((* item), dao) : false); }
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};
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template <typename U1, typename U2>
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struct saveItem_Helper<std::pair<U1, U2>, false>
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{
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static inline bool save(std::pair<U1, U2> & item, qx::dao::detail::QxDao_Helper_Container<T> & dao)
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{ return qx::dao::detail::QxDao_Save_Container<T>::saveItem(item.second, dao); }
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};
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template <typename U1, typename U2>
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struct saveItem_Helper<const std::pair<U1, U2>, false>
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{
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static inline bool save(const std::pair<U1, U2> & item, qx::dao::detail::QxDao_Helper_Container<T> & dao)
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{ return qx::dao::detail::QxDao_Save_Container<T>::saveItem(item.second, dao); }
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};
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#if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
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template <typename U1, typename U2>
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struct saveItem_Helper<QPair<U1, U2>, false>
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{
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static inline bool save(QPair<U1, U2> & item, qx::dao::detail::QxDao_Helper_Container<T> & dao)
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{ return qx::dao::detail::QxDao_Save_Container<T>::saveItem(item.second, dao); }
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};
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template <typename U1, typename U2>
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struct saveItem_Helper<const QPair<U1, U2>, false>
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{
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static inline bool save(const QPair<U1, U2> & item, qx::dao::detail::QxDao_Helper_Container<T> & dao)
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{ return qx::dao::detail::QxDao_Save_Container<T>::saveItem(item.second, dao); }
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};
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#endif // (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
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template <typename U>
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struct saveItem_Helper<U, false>
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{
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static bool save(U & item, qx::dao::detail::QxDao_Helper_Container<T> & dao)
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{
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qx_bool bExist = dao.isValidPrimaryKey(item);
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if (bExist) { bExist = qx::dao::exist(item, (& dao.database())); }
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if (bExist) { dao.updateError(qx::dao::update(item, (& dao.database()))); }
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else { dao.updateError(qx::dao::insert(item, (& dao.database()))); }
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return dao.isValid();
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}
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};
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};
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template <class T>
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struct QxDao_Save_Ptr
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{
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static inline QSqlError save(T & t, QSqlDatabase * pDatabase)
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{ return (t ? qx::dao::save((* t), pDatabase) : QSqlError()); }
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};
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template <class T>
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struct QxDao_Save
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{
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static inline QSqlError save(T & t, QSqlDatabase * pDatabase)
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{
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typedef typename std::conditional< std::is_pointer<T>::value, qx::dao::detail::QxDao_Save_Ptr<T>, qx::dao::detail::QxDao_Save_Generic<T> >::type type_dao_1;
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typedef typename std::conditional< qx::trait::is_smart_ptr<T>::value, qx::dao::detail::QxDao_Save_Ptr<T>, type_dao_1 >::type type_dao_2;
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typedef typename std::conditional< qx::trait::is_container<T>::value, qx::dao::detail::QxDao_Save_Container<T>, type_dao_2 >::type type_dao_3;
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QSqlError error = type_dao_3::save(t, pDatabase);
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if (! error.isValid()) { qx::dao::detail::QxDao_Keep_Original<T>::backup(t); }
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return error;
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}
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};
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} // namespace detail
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} // namespace dao
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} // namespace qx
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