QxOrm  1.2.9
C++ Object Relational Mapping library
is_container_to_pod.h
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00031 
00032 #ifndef _QX_IS_CONTAINER_TO_POD_H_
00033 #define _QX_IS_CONTAINER_TO_POD_H_
00034 
00035 #ifdef _MSC_VER
00036 #pragma once
00037 #endif
00038 
00039 #include <boost/mpl/if.hpp>
00040 #include <boost/mpl/logical.hpp>
00041 
00042 #include <QxTraits/is_container.h>
00043 #include <QxTraits/is_qx_pod.h>
00044 
00045 namespace qx {
00046 namespace trait {
00047 
00048 template <typename T>
00049 class is_container_to_pod
00050 {
00051 
00052 private:
00053 
00054    template <typename U>
00055    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const std::vector<U> &);
00056 
00057    template <typename U>
00058    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const std::list<U> &);
00059 
00060    template <typename U>
00061    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const std::set<U> &);
00062 
00063    template <typename U>
00064    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const QVector<U> &);
00065 
00066    template <typename U>
00067    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const QList<U> &);
00068 
00069    template <typename U>
00070    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const QSet<U> &);
00071 
00072    template <typename U>
00073    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const QLinkedList<U> &);
00074 
00075    template <typename U>
00076    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const boost::unordered_set<U> &);
00077 
00078    template <typename U>
00079    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeContainer(const boost::unordered_multiset<U> &);
00080 
00081    static int removeContainer(...);
00082    static T t;
00083 
00084 public:
00085 
00086    enum { value = (qx::trait::is_container<T>::value && (sizeof(qx::trait::is_container_to_pod<T>::removeContainer(t)) == sizeof(char))) };
00087 
00088    typedef typename boost::mpl::if_c<qx::trait::is_container_to_pod<T>::value, boost::mpl::true_, boost::mpl::false_>::type type;
00089 
00090 };
00091 
00092 } // namespace trait
00093 } // namespace qx
00094 
00095 #endif // _QX_IS_CONTAINER_TO_POD_H_