Re: [Boost-users] [serialization] Export macro doesnt work

Subject: Re: [Boost-users] [serialization] Export macro doesnt work
From: Jari (jaristr_at_[hidden])
Date: 2011-08-29 06:13:47

Thx I tried this but it didnt fix the problem..

I traced in basic_serializer_map.cpp and noticed that all the classes
are being inserted to m_map , some even multiple times and also lot of
null pointers.

in Line 46:

    const std::pair<map_type::iterator, bool> result =
        m_map.insert(bs);

But still get the unexported class error.

2011/8/13 Júlio Hoffimann <julio.hoffimann_at_[hidden]>:
> Hi Jari,
> I had the same frustration with Boost.Serialization these days, i know
> exactly what you're thinking: wtf?! This should be easy!
> Let me tell you what solved the problem in my case...
> Suppose you have a derived class D implemented as usual (D.hpp / D.cpp). You
> need to use the two macros mentioned at the end of the files *outside* any
> namespace. For instance:
>
> //////////////////////////////D.hpp
> namespace N
> {
>     class D : public B
>     {
>         // something
>     };
> } // namespace N
>
> BOOST_CLASS_EXPORT_KEY( N::D )
>
> //////////////////////////////D.cpp
> #include D.hpp
>
> namespace N
> {
>     // D implementation
> } // namespace N
>
> BOOST_CLASS_EXPORT_IMPLEMENT( N::D )
>
> You also need to include the boost::archives you're using in D.hpp, since
> this is the obscure way Boost.Serialization instantiates code for your
> class.
> Regards,
> Júlio.
>
> 2011/8/12 Jari <jaristr_at_[hidden]>
>>
>> I'm using  1.46.1.
>>
>> So I must use  EXPORT_KEY and EXPORT_IMPL ?
>>
>>
>>
>> On Fri, Aug 12, 2011 at 7:33 AM, Robert Ramey <ramey_at_[hidden]> wrote:
>> > Jari wrote:
>> >> Ok I tried one test code and it worked, but when I moved the all the
>> >> classes in header file and but the export macro in cpp file it fails
>> >> with "derived class not registered or exported".
>> >>
>> >> Then I moved the export macros to main.cpp right before main() and
>> >> before the saving/loading calls, and that did the trick.
>> >>
>> >> So it seems export's need to be in same CPP file where the
>> >> loading/saving starts?
>> >> Or is it in same cpp where the function is?
>> >>
>> >> Im using visual studio 10 express
>> >
>> >
>> > The question of export being in the *.ccp and/or in the header
>> > was a confusion which has only been resolved in recent
>> > versions of the library.  Now there is EXPORT_KEY
>> > and EXPORT_IMPL... Which resolves the ocnfusion.
>> > I don't know which version of boost you're using so
>> > I don't know if this addresses your issue or not.
>> >
>> > Robert Ramey
>> >
>> >
>> >
>> > _______________________________________________
>> > Boost-users mailing list
>> > Boost-users_at_[hidden]
>> > http://lists.boost.org/mailman/listinfo.cgi/boost-users
>> >
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>
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