QxOrm  1.2.3
C++ Object Relational Mapping library
qt_meta_object.h
Go to the documentation of this file.
00001 /****************************************************************************
00002 **
00003 ** http://www.qxorm.com/
00004 ** http://sourceforge.net/projects/qxorm/
00005 ** Original file by Lionel Marty
00006 **
00007 ** This file is part of the QxOrm library
00008 **
00009 ** This software is provided 'as-is', without any express or implied
00010 ** warranty. In no event will the authors be held liable for any
00011 ** damages arising from the use of this software.
00012 **
00013 ** GNU Lesser General Public License Usage
00014 ** This file must be used under the terms of the GNU Lesser
00015 ** General Public License version 2.1 as published by the Free Software
00016 ** Foundation and appearing in the file 'license.lgpl.txt' included in the
00017 ** packaging of this file.  Please review the following information to
00018 ** ensure the GNU Lesser General Public License version 2.1 requirements
00019 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
00020 **
00021 ** If you have questions regarding the use of this file, please contact :
00022 ** contact@qxorm.com
00023 **
00024 ****************************************************************************/
00025 
00026 #ifndef _QX_QT_META_OBJECT_H_
00027 #define _QX_QT_META_OBJECT_H_
00028 
00029 #ifdef _MSC_VER
00030 #pragma once
00031 #endif
00032 
00040 #include <boost/type_traits/is_base_of.hpp>
00041 
00042 #include <QtCore/qmetaobject.h>
00043 #include <QtCore/qmetatype.h>
00044 
00045 namespace qx {
00046 namespace trait {
00047 
00052 template <typename T>
00053 class qt_meta_object
00054 {
00055 
00056 public:
00057 
00058    enum { is_valid = (boost::is_base_of<QObject, T>::value) };
00059 
00060    static const QMetaObject * get()
00061    { return qtMetaObject<qt_meta_object<T>::is_valid, 0>::get(); }
00062 
00063 private:
00064 
00065    template <bool isQObject /* = false */, int dummy>
00066    struct qtMetaObject
00067    { static inline const QMetaObject * get() { return NULL; } };
00068 
00069    template <int dummy>
00070    struct qtMetaObject<true, dummy>
00071    { static inline const QMetaObject * get() { return (& T::staticMetaObject); } };
00072 
00073 };
00074 
00075 } // namespace trait
00076 } // namespace qx
00077 
00078 #endif // _QX_QT_META_OBJECT_H_