150 lines
5.3 KiB
C++
150 lines
5.3 KiB
C++
/****************************************************************************
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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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namespace qx
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{
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namespace dao
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{
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namespace detail
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{
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template <class T>
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struct QxDao_Update_Optimized_Generic
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{
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static inline QSqlError update_optimized(const qx::QxSqlQuery &query, qx::dao::ptr<T> &ptr, QSqlDatabase *pDatabase, bool bUseExecBatch)
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{
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Q_UNUSED(bUseExecBatch); // Useful only with containers
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QStringList lstDiff;
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if (ptr.isNull() || !ptr.isDirty(lstDiff))
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{
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return QSqlError();
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}
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return qx::dao::update_by_query(query, (*ptr), pDatabase, lstDiff);
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}
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};
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template <class T>
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struct QxDao_Update_Optimized_Container
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{
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static inline QSqlError update_optimized(const qx::QxSqlQuery &query, qx::dao::ptr<T> &ptr, QSqlDatabase *pDatabase, bool bUseExecBatch)
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{
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if (ptr.isNull() || (qx::trait::generic_container<T>::size(*ptr) <= 0))
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{
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return QSqlError();
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}
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if (!ptr.getOriginal() || (qx::trait::generic_container<T>::size(*ptr) != qx::trait::generic_container<T>::size(*ptr.getOriginal())))
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{
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return qx::dao::update_by_query(query, (*ptr), pDatabase);
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}
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QStringList lstDiffItem;
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QSqlError errorItem;
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QSqlDatabase db;
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bool bCheckDatabaseTransaction = true;
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#ifdef _QX_ENABLE_MONGODB
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if (qx::QxSqlDatabase::getSingleton()->getDriverName() == "QXMONGODB")
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{
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bCheckDatabaseTransaction = false;
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}
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#endif // _QX_ENABLE_MONGODB
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if (bCheckDatabaseTransaction)
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{
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db = (pDatabase ? (*pDatabase) : qx::QxSqlDatabase::getDatabase(errorItem));
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if (errorItem.isValid())
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{
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return errorItem;
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}
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if (!pDatabase)
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{
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db.transaction();
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}
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}
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typename T::const_iterator it2 = ptr.getOriginal()->begin();
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for (typename T::const_iterator it1 = ptr->begin(); it1 != ptr->end(); ++it1)
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{
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lstDiffItem.clear();
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qx::dao::detail::is_dirty((*it1), (*it2), lstDiffItem);
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if (lstDiffItem.count() > 0)
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{
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errorItem = qx::dao::update_by_query(query, (*it1), (&db), lstDiffItem, bUseExecBatch);
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}
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if (errorItem.isValid())
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{
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break;
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}
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else
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{
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++it2;
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}
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}
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if (bCheckDatabaseTransaction)
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{
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if (!pDatabase && !errorItem.isValid())
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{
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db.commit();
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}
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else if (!pDatabase)
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{
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db.rollback();
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}
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}
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return errorItem;
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}
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};
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template <class T>
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struct QxDao_Update_Optimized
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{
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static inline QSqlError update_optimized(const qx::QxSqlQuery &query, qx::dao::ptr<T> &ptr, QSqlDatabase *pDatabase, bool bUseExecBatch = false)
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{
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typedef typename std::conditional<qx::trait::is_container<T>::value, qx::dao::detail::QxDao_Update_Optimized_Container<T>, qx::dao::detail::QxDao_Update_Optimized_Generic<T>>::type type_dao_1;
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QSqlError error = type_dao_1::update_optimized(query, ptr, pDatabase, bUseExecBatch);
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if (!error.isValid())
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{
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qx::dao::detail::QxDao_Keep_Original<qx::dao::ptr<T>>::backup(ptr);
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}
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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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