QxOrm  1.2.8
C++ Object Relational Mapping library
is_smart_ptr_to_pod.h
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00031 
00032 #ifndef _QX_IS_SMART_PTR_TO_POD_H_
00033 #define _QX_IS_SMART_PTR_TO_POD_H_
00034 
00035 #ifdef _MSC_VER
00036 #pragma once
00037 #endif
00038 
00046 #include <boost/mpl/if.hpp>
00047 #include <boost/mpl/logical.hpp>
00048 
00049 #include <QxTraits/is_smart_ptr.h>
00050 #include <QxTraits/is_qx_pod.h>
00051 
00052 namespace qx {
00053 namespace trait {
00054 
00059 template <typename T>
00060 class is_smart_ptr_to_pod
00061 {
00062 
00063 private:
00064 
00065    template <typename U>
00066    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const boost::scoped_ptr<U> &);
00067 
00068    template <typename U>
00069    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const boost::shared_ptr<U> &);
00070 
00071    template <typename U>
00072    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const boost::weak_ptr<U> &);
00073 
00074    template <typename U>
00075    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const boost::intrusive_ptr<U> &);
00076 
00077    template <typename U>
00078    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const QSharedDataPointer<U> &);
00079 
00080    template <typename U>
00081    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const QSharedPointer<U> &);
00082 
00083    template <typename U>
00084    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const QWeakPointer<U> &);
00085 
00086    template <typename U>
00087    static typename boost::mpl::if_c<qx::trait::is_qx_pod<U>::value, char, int>::type removeSmartPtr(const qx::dao::ptr<U> &);
00088 
00089    static int removeSmartPtr(...);
00090    static T t;
00091 
00092 public:
00093 
00094    enum { value = (qx::trait::is_smart_ptr<T>::value && (sizeof(qx::trait::is_smart_ptr_to_pod<T>::removeSmartPtr(t)) == sizeof(char))) };
00095 
00096    typedef typename boost::mpl::if_c<qx::trait::is_smart_ptr_to_pod<T>::value, boost::mpl::true_, boost::mpl::false_>::type type;
00097 
00098 };
00099 
00100 } // namespace trait
00101 } // namespace qx
00102 
00103 #endif // _QX_IS_SMART_PTR_TO_POD_H_