QxOrm  1.2.8
C++ Object Relational Mapping library
is_container_key_value.h
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00001 /****************************************************************************
00002 **
00003 ** http://www.qxorm.com/
00004 ** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
00005 **
00006 ** This file is part of the QxOrm library
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00018 ** GNU General Public License Usage
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00031 
00032 #ifndef _QX_IS_CONTAINER_KEY_VALUE_H_
00033 #define _QX_IS_CONTAINER_KEY_VALUE_H_
00034 
00035 #ifdef _MSC_VER
00036 #pragma once
00037 #endif
00038 
00046 #include <boost/mpl/if.hpp>
00047 #include <boost/mpl/or.hpp>
00048 #include <boost/mpl/logical.hpp>
00049 
00050 #include <QxTraits/is_container.h>
00051 
00052 namespace qx {
00053 namespace trait {
00054 
00059 template <typename T>
00060 class is_container_key_value
00061 {
00062 
00063 private:
00064 
00065    typedef typename boost::mpl::or_< qx::trait::is_boost_unordered_map<T>, 
00066                                      qx::trait::is_std_map<T>, 
00067                                      qx::trait::is_qt_map<T>, 
00068                                      qx::trait::is_qt_hash<T> >::type cond_is_container_key_value_1;
00069 
00070    typedef typename boost::mpl::or_< typename qx::trait::is_container_key_value<T>::cond_is_container_key_value_1, 
00071                                      qx::trait::is_qt_multi_map<T>, 
00072                                      qx::trait::is_qt_multi_hash<T>, 
00073                                      qx::trait::is_qx_collection<T> >::type cond_is_container_key_value_2;
00074 
00075    typedef typename boost::mpl::if_< typename qx::trait::is_container_key_value<T>::cond_is_container_key_value_2, 
00076                                      boost::mpl::true_, 
00077                                      boost::mpl::false_ >::type type_is_container_key_value;
00078 
00079 public:
00080 
00081    enum { value = (qx::trait::is_container<T>::value && qx::trait::is_container_key_value<T>::type_is_container_key_value::value) };
00082 
00083    typedef typename boost::mpl::if_c<qx::trait::is_container_key_value<T>::value, boost::mpl::true_, boost::mpl::false_>::type type;
00084 
00085 };
00086 
00087 } // namespace trait
00088 } // namespace qx
00089 
00090 #endif // _QX_IS_CONTAINER_KEY_VALUE_H_