QxOrm 1.1.9
C++ Object Relational Mapping library
is_qt_linked_list.h
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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
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00016 ** Foundation and appearing in the file 'license.lgpl.txt' included in the
00017 ** packaging of this file.  Please review the following information to
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00025 
00026 #ifndef _QX_IS_QT_LINKED_LIST_H_
00027 #define _QX_IS_QT_LINKED_LIST_H_
00028 
00029 #ifdef _MSC_VER
00030 #pragma once
00031 #endif
00032 
00040 #include <QtCore/qlinkedlist.h>
00041 
00042 #include <boost/mpl/if.hpp>
00043 #include <boost/mpl/logical.hpp>
00044 
00045 namespace qx {
00046 namespace trait {
00047 
00052 template <typename T>
00053 class is_qt_linked_list
00054 {
00055 
00056 private:
00057 
00058    template <typename V> static char isContainer(const QLinkedList<V> &);
00059    static int isContainer(...);
00060    static T t;
00061 
00062 public:
00063 
00064    enum { value = (sizeof(qx::trait::is_qt_linked_list<T>::isContainer(t)) == sizeof(char)) };
00065 
00066    typedef typename boost::mpl::if_c<qx::trait::is_qt_linked_list<T>::value, 
00067                                      boost::mpl::true_, 
00068                                      boost::mpl::false_>::type type;
00069 
00070 };
00071 
00072 } // namespace trait
00073 } // namespace qx
00074 
00075 #endif // _QX_IS_QT_LINKED_LIST_H_
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