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195 lines
8.2 KiB
195 lines
8.2 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_ExecuteQuery_Generic
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{
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static QSqlError executeQuery(qx::QxSqlQuery & query, T & t, QSqlDatabase * pDatabase)
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{
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qx::dao::detail::QxDao_Helper<T> dao(t, pDatabase, "execute custom sql query or stored procedure", new qx::QxSqlQueryBuilder_Count<T>());
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if (! dao.isValid()) { return dao.error(); }
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#ifdef _QX_ENABLE_MONGODB
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if (dao.isMongoDB())
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{
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qx::dao::on_before_fetch<T>((& t), (& dao)); if (! dao.isValid()) { return dao.error(); }
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qx::dao::mongodb::QxMongoDB_Helper::executeCommand((& dao), dao.getDataMemberX()->getClass(), (& query)); if (! dao.isValid()) { return dao.error(); }
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QString json = query.response().toString(); qx::serialization::json::from_string(t, json, 1, "mongodb");
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qx::dao::on_after_fetch<T>((& t), (& dao)); if (! dao.isValid()) { return dao.error(); }
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return dao.error();
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}
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#endif // _QX_ENABLE_MONGODB
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QString sql = query.query();
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if (sql.isEmpty()) { return dao.errEmpty(); }
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dao.builder().setSqlQuery(sql);
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if (! dao.prepare(sql)) { return dao.errFailed(true); }
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query.resolve(dao.query());
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if (! dao.exec(true)) { return dao.errFailed(); }
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query.resolveOutput(dao.query(), false);
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if (! dao.nextRecord()) { return dao.error(); }
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qx::dao::on_before_fetch<T>((& t), (& dao));
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if (! dao.isValid()) { return dao.error(); }
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qx::IxDataMemberX * pDataMemberX = dao.builder().getDataMemberX();
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if (! pDataMemberX) { qAssert(false); return dao.error(); }
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QSqlRecord record = dao.query().record();
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for (int i = 0; i < record.count(); i++)
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{
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if (! pDataMemberX->exist_WithDaoStrategy(record.fieldName(i))) { continue; }
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qx::IxDataMember * pDataMember = pDataMemberX->get_WithDaoStrategy(record.fieldName(i));
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if (pDataMember) { pDataMember->fromVariant((& t), record.value(i), -1, qx::cvt::context::e_database); }
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}
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qx::dao::on_after_fetch<T>((& t), (& dao));
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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_ExecuteQuery_Container
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{
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static QSqlError executeQuery(qx::QxSqlQuery & query, 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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qx::trait::generic_container<T>::clear(t);
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qx::IxSqlQueryBuilder * pBuilder = new qx::QxSqlQueryBuilder_Count<type_item>();
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qx::dao::detail::QxDao_Helper_Container<T> dao(t, pDatabase, "execute custom sql query or stored procedure", pBuilder);
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if (! dao.isValid()) { return dao.error(); }
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#ifdef _QX_ENABLE_MONGODB
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if (dao.isMongoDB())
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{
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qx::dao::mongodb::QxMongoDB_Helper::executeCommand((& dao), dao.getDataMemberX()->getClass(), (& query)); if (! dao.isValid()) { return dao.error(); }
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QString json = query.response().toString(); qx::serialization::json::from_string(t, json, 1, "mongodb");
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return dao.error();
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}
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#endif // _QX_ENABLE_MONGODB
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QString sql = query.query();
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if (sql.isEmpty()) { return dao.errEmpty(); }
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dao.builder().setSqlQuery(sql);
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if (! dao.prepare(sql)) { return dao.errFailed(true); }
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query.resolve(dao.query());
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if (! dao.exec(true)) { return dao.errFailed(); }
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query.resolveOutput(dao.query(), false);
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QVector< QPair<int, qx::IxDataMember *> > vColumnToFetch;
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bool bSize = (dao.hasFeature(QSqlDriver::QuerySize) && (dao.query().size() > 0));
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if (bSize) { qx::trait::generic_container<T>::reserve(t, dao.query().size()); }
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while (dao.nextRecord()) { insertNewItem(t, dao, vColumnToFetch); if (! dao.isValid()) { return dao.error(); } }
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if (bSize) { qAssert(qx::trait::generic_container<T>::size(t) == static_cast<long>(dao.query().size())); }
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return dao.error();
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}
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private:
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static void insertNewItem(T & t, qx::dao::detail::QxDao_Helper_Container<T> & dao, QVector< QPair<int, qx::IxDataMember *> > & vColumnToFetch)
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{
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typedef typename qx::trait::generic_container<T>::type_item type_item;
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typedef typename type_item::type_value_qx type_value_qx;
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type_item item = qx::trait::generic_container<T>::createItem();
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type_value_qx & item_val = item.value_qx();
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qx::IxDataMember * pId = dao.getDataId(); QVariant vId;
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qx::dao::on_before_fetch<type_value_qx>((& item_val), (& dao));
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if (! dao.isValid()) { return; }
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if (vColumnToFetch.count() <= 0)
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{
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qx::IxDataMemberX * pDataMemberX = dao.builder().getDataMemberX();
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if (! pDataMemberX) { qAssert(false); return; }
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QSqlRecord record = dao.query().record();
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vColumnToFetch.reserve(record.count());
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for (int i = 0; i < record.count(); i++)
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{
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if (! pDataMemberX->exist_WithDaoStrategy(record.fieldName(i))) { continue; }
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qx::IxDataMember * pDataMember = pDataMemberX->get_WithDaoStrategy(record.fieldName(i));
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if (pDataMember) { vColumnToFetch.append(qMakePair(i, pDataMember)); }
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}
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}
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for (int j = 0; j < vColumnToFetch.count(); j++)
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{
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QVariant vValue = dao.query().value(vColumnToFetch[j].first);
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vColumnToFetch[j].second->fromVariant((& item_val), vValue, -1, qx::cvt::context::e_database);
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if (pId == vColumnToFetch[j].second) { vId = vValue; }
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}
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if (! vId.isValid())
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{ vId = QVariant(static_cast<qlonglong>(qx::trait::generic_container<T>::size(t))); }
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qx::cvt::from_variant(vId, item.key(), "", -1, qx::cvt::context::e_database);
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qx::dao::on_after_fetch<type_value_qx>((& item_val), (& dao)); if (! dao.isValid()) { return; }
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qx::dao::detail::QxDao_Keep_Original<type_item>::backup(item);
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qx::trait::generic_container<T>::insertItem(t, item);
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}
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};
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template <class T>
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struct QxDao_ExecuteQuery_Ptr
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{
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static inline QSqlError executeQuery(qx::QxSqlQuery & query, T & t, QSqlDatabase * pDatabase)
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{ if (! t) { qx::trait::construct_ptr<T>::get(t); }; return qx::dao::execute_query(query, (* t), pDatabase); }
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};
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template <class T>
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struct QxDao_ExecuteQuery
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{
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static inline QSqlError executeQuery(qx::QxSqlQuery & query, 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_ExecuteQuery_Ptr<T>, qx::dao::detail::QxDao_ExecuteQuery_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_ExecuteQuery_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_ExecuteQuery_Container<T>, type_dao_2 >::type type_dao_3;
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QSqlError error = type_dao_3::executeQuery(query, 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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