first commit

2026-04-03 11:32:07 +08:00
commit 003be19522
1142 changed files with 185854 additions and 0 deletions
--- a/include/QxTraits/is_valid_primary_key.h
+++ b/include/QxTraits/is_valid_primary_key.h
@@ -0,0 +1,144 @@
+/****************************************************************************
+**
+** 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
+**
+****************************************************************************/
+
+#ifndef _QX_IS_VALID_PRIMARY_KEY_H_
+#define _QX_IS_VALID_PRIMARY_KEY_H_
+
+#ifdef _MSC_VER
+#pragma once
+#endif
+
+/*!
+ * \file is_valid_primary_key.h
+ * \author XDL Team
+ * \ingroup QxTraits
+ * \brief qx::trait::is_valid_primary_key<T>(const T & t) : return true if t can be a valid primary key to be inserted into a database, otherwise return false
+ */
+
+namespace qx
+{
+   namespace trait
+   {
+      namespace detail
+      {
+
+         /*!
+          * \ingroup QxTraits
+          * \brief qx::trait::is_valid_primary_key<T>(const T & t) : return true if t can be a valid primary key to be inserted into a database, otherwise return false
+          */
+         template <typename T>
+         struct is_valid_primary_key
+         {
+            static inline bool get(const T &t)
+            {
+               Q_UNUSED(t);
+               qAssert(false);
+               return false;
+            }
+         };
+
+         template <>
+         struct is_valid_primary_key<short>
+         {
+            static inline bool get(const short &t) { return (t != 0); }
+         };
+
+         template <>
+         struct is_valid_primary_key<int>
+         {
+            static inline bool get(const int &t) { return (t != 0); }
+         };
+
+         template <>
+         struct is_valid_primary_key<long>
+         {
+            static inline bool get(const long &t) { return (t != 0); }
+         };
+
+         template <>
+         struct is_valid_primary_key<long long>
+         {
+            static inline bool get(const long long &t) { return (t != 0); }
+         };
+
+         template <>
+         struct is_valid_primary_key<QString>
+         {
+            static inline bool get(const QString &t) { return (!t.isEmpty()); }
+         };
+
+         template <>
+         struct is_valid_primary_key<QByteArray>
+         {
+            static inline bool get(const QByteArray &t) { return (!t.isEmpty()); }
+         };
+
+         template <>
+         struct is_valid_primary_key<std::string>
+         {
+            static inline bool get(const std::string &t) { return (!t.empty()); }
+         };
+
+         template <>
+         struct is_valid_primary_key<std::wstring>
+         {
+            static inline bool get(const std::wstring &t) { return (!t.empty()); }
+         };
+
+         template <>
+         struct is_valid_primary_key<QVariant>
+         {
+            static inline bool get(const QVariant &t)
+            {
+               if (t.type() == QVariant::ByteArray)
+               {
+                  return qx::trait::detail::is_valid_primary_key<QByteArray>::get(t.toByteArray());
+               }
+               if (t.type() == QVariant::String)
+               {
+                  return qx::trait::detail::is_valid_primary_key<QString>::get(t.toString());
+               }
+               return (!t.isNull() && (t.toLongLong() != 0));
+            }
+         };
+
+      } // namespace detail
+
+      template <typename T>
+      inline bool is_valid_primary_key(const T &t)
+      {
+         return qx::trait::detail::is_valid_primary_key<T>::get(t);
+      }
+
+   } // namespace trait
+} // namespace qx
+
+#endif // _QX_IS_VALID_PRIMARY_KEY_H_