[boost] Re: [serialization] how to select tracking type etc. to template class?

From: Robert Ramey (ramey_at_[hidden])
Date: 2003-12-08 11:26:51

Alexey Nikitin wrote:

>#include <boost/serialization/tracking.hpp>

>template<class T>
>struct A
>{
>  template<class Archive>
>  void serialize(Archive& ar, const unsigned long file_version)
>  {
>    ar & m_;
>  }
>  T m_;
>};

>BOOST_CLASS_TRACKING(A, boost::serialization::track_never)
>                  //^^^
>                  //It is not compiled.
>                  //What I must write here?

In reviewing tracking.hpp, it can be seen that the above macro doesn't expand
to anything sensible when argument is a template.

However, on compilers that support partial specialization, we should be able
to assign a tracking type trait with the following:

// specify the current tracking behavior for the class
namespace boost {
namespace serialization {

template<class T> 
struct tracking_level<A<T> >{
    typedef mpl::int_< boost::serialization::track_never> type;
    BOOST_STATIC_CONSTANT(enum tracking_type, value = boost::serialization::track_never);
};

} // namespace serialization
} // namespace boost

Let me know how this works.

Robert Ramey