first commit

2026-04-03 11:32:07 +08:00
commit 003be19522
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--- a/inl/QxDao/QxDao_Update_Optimized.inl
+++ b/inl/QxDao/QxDao_Update_Optimized.inl
@@ -0,0 +1,149 @@
+/****************************************************************************
+**
+** https://www.qxorm.com/
+** Copyright (C) 2013 XDL Team (ic-east.com)
+**
+** This file is part of the QxOrm library
+**
+** This software is provided 'as-is', without any express or implied
+** warranty. In no event will the authors be held liable for any
+** damages arising from the use of this software
+**
+** Commercial Usage
+** Licensees holding valid commercial QxOrm licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and XDL Team
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file 'license.gpl3.txt' included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met : http://www.gnu.org/copyleft/gpl.html
+**
+** If you are unsure which license is appropriate for your use, or
+** if you have questions regarding the use of this file, please contact :
+** ic-east.com
+**
+****************************************************************************/
+
+namespace qx
+{
+   namespace dao
+   {
+      namespace detail
+      {
+
+         template <class T>
+         struct QxDao_Update_Optimized_Generic
+         {
+
+            static inline QSqlError update_optimized(const qx::QxSqlQuery &query, qx::dao::ptr<T> &ptr, QSqlDatabase *pDatabase, bool bUseExecBatch)
+            {
+               Q_UNUSED(bUseExecBatch); // Useful only with containers
+               QStringList lstDiff;
+               if (ptr.isNull() || !ptr.isDirty(lstDiff))
+               {
+                  return QSqlError();
+               }
+               return qx::dao::update_by_query(query, (*ptr), pDatabase, lstDiff);
+            }
+         };
+
+         template <class T>
+         struct QxDao_Update_Optimized_Container
+         {
+
+            static inline QSqlError update_optimized(const qx::QxSqlQuery &query, qx::dao::ptr<T> &ptr, QSqlDatabase *pDatabase, bool bUseExecBatch)
+            {
+               if (ptr.isNull() || (qx::trait::generic_container<T>::size(*ptr) <= 0))
+               {
+                  return QSqlError();
+               }
+               if (!ptr.getOriginal() || (qx::trait::generic_container<T>::size(*ptr) != qx::trait::generic_container<T>::size(*ptr.getOriginal())))
+               {
+                  return qx::dao::update_by_query(query, (*ptr), pDatabase);
+               }
+
+               QStringList lstDiffItem;
+               QSqlError errorItem;
+               QSqlDatabase db;
+               bool bCheckDatabaseTransaction = true;
+
+#ifdef _QX_ENABLE_MONGODB
+               if (qx::QxSqlDatabase::getSingleton()->getDriverName() == "QXMONGODB")
+               {
+                  bCheckDatabaseTransaction = false;
+               }
+#endif // _QX_ENABLE_MONGODB
+
+               if (bCheckDatabaseTransaction)
+               {
+                  db = (pDatabase ? (*pDatabase) : qx::QxSqlDatabase::getDatabase(errorItem));
+                  if (errorItem.isValid())
+                  {
+                     return errorItem;
+                  }
+                  if (!pDatabase)
+                  {
+                     db.transaction();
+                  }
+               }
+
+               typename T::const_iterator it2 = ptr.getOriginal()->begin();
+               for (typename T::const_iterator it1 = ptr->begin(); it1 != ptr->end(); ++it1)
+               {
+                  lstDiffItem.clear();
+                  qx::dao::detail::is_dirty((*it1), (*it2), lstDiffItem);
+                  if (lstDiffItem.count() > 0)
+                  {
+                     errorItem = qx::dao::update_by_query(query, (*it1), (&db), lstDiffItem, bUseExecBatch);
+                  }
+                  if (errorItem.isValid())
+                  {
+                     break;
+                  }
+                  else
+                  {
+                     ++it2;
+                  }
+               }
+
+               if (bCheckDatabaseTransaction)
+               {
+                  if (!pDatabase && !errorItem.isValid())
+                  {
+                     db.commit();
+                  }
+                  else if (!pDatabase)
+                  {
+                     db.rollback();
+                  }
+               }
+
+               return errorItem;
+            }
+         };
+
+         template <class T>
+         struct QxDao_Update_Optimized
+         {
+
+            static inline QSqlError update_optimized(const qx::QxSqlQuery &query, qx::dao::ptr<T> &ptr, QSqlDatabase *pDatabase, bool bUseExecBatch = false)
+            {
+               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;
+
+               QSqlError error = type_dao_1::update_optimized(query, ptr, pDatabase, bUseExecBatch);
+               if (!error.isValid())
+               {
+                  qx::dao::detail::QxDao_Keep_Original<qx::dao::ptr<T>>::backup(ptr);
+               }
+               return error;
+            }
+         };
+
+      } // namespace detail
+   } // namespace dao
+} // namespace qx