Hello,
thanks for help with this. This has fixed the problem. However, I have got
a much more complicated example which fails.
I have a simple inheritance structure with 4 classes, they derive
a->b->c->d nothing complex. say a is the mose base and d is the most
derived class, Each class has got a virtual destructor. I can easily
serialize object of type d but I cannot do this with a pointer to a this
class. Basicaly invoking in the code
std::vector tmpCcys;
ar & boost::serialization::make_nvp("currencyEvents", tmpCcys);
does not work at all! I can get to the point
// retrieve the true type of the object pointed to
// if this assertion fails its an error in this library
assert(NULL != this_type);
const boost::serialization::extended_type_info * true_type =
i.get_derived_extended_type_info(t);
// note:if this exception is thrown, be sure that derived
pointer
// is either registered or exported.
if(NULL == true_type){
boost::serialization::throw_exception(
archive_exception(
archive_exception::unregistered_class,
true_type->get_debug_info()
)
);
}
in the oserializer.hpp where each element of the vector is dumped to the
archive but call to i.get_derived_extended_type_info(t) throws an
exception of an unknown type. It is not archive or event std::exception
onlt catch(...) {...} can handle it and therefore it is not possible to
see what is going on. The data under t looks fine but
const extended_type_info *
get_derived_extended_type_info(const T & t) const {
// note: this implementation - based on usage of typeid (rtti)
// only does something if the class has at least one virtual
function.
BOOST_STATIC_WARNING(boost::is_polymorphic<T>::value);
return
typeid_system::extended_type_info_typeid_0::get_extended_type_info(
typeid(t)
);
}
simply throws something which is not possible to handle correctly. I
cannot step into typeid(t) on windows and VC++2005. As mentioned i have no
problems at all with serializing object. Serializing pointers deos not
work att all! I am exporting the class using
BOOST_CLASS_EXPORT_GUID(d, "CurrencyEvent")
I have to mention that the most base class is a template and I export it
as well using
BOOST_CLASS_EXPORT_GUID(a<Currency>, "EventCurrency")
BOOST_CLASS_EXPORT_GUID(a<CurrencyCouple>, "EventCurrencyCouple")
similar
BOOST_CLASS_EXPORT_GUID(b, "BaseCurrencyEvent")
BOOST_CLASS_EXPORT_GUID(c, "RealCurrencyEvent")
the classes a,b,c and d are within a namespace Events and defined/declared
within a dll but this should not be a problem at all since I can serialize
objects of the most derived class.
Could someone help me with this issue?
Thanks a lot in advance
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