Re: [Boost-users] boost serialization and datatype mismatch

From: sam p (sameersp21_at_[hidden])
Date: 2008-08-23 07:50:23

This is fine for most of the cases.
But suppose I want to pass serialized stream over a network and at the other
end I want to validate each datatype before deserializing it then how to do
it?
Can I use typeinfo somehow?

Thanks,
Sameer

On Fri, Aug 22, 2008 at 11:47 PM, Robert Ramey <ramey_at_[hidden]> wrote:

>  The easy way is to use:
>
>     template<class Archive>
>      void serialize(Archive & ar, const unsigned int file_version)
>     {
>        ar & tmpMap;
>         ar & a;
>         ar & d;
>         ar & stringList;
>    }
>
> then input/output are always insync.
>
> Robert Ramey
>
> "sam p" <sameersp21_at_[hidden]> wrote in message
> news:c49aaa00808212055v39e5036habe307521a42d5b_at_mail.gmail.com...
>   Hi,
>
>    How to validate datatype before it gets deserialized?
> e.g.
> struct Abc
> {
>
>     std::map<string,string> tmpMap;
>     int a;
>     float d;
>     std::list<string> stringList;
>
>      void serialize(boost::archive::polymorphic_oarchive & ar, const
> unsigned int file_version)
>    {
>        ar & tmpMap;
>         ar & a;
>         ar & d;
>         ar & stringList;
>    }
>       void serialize(boost::archive::polymorphic_iarchive & ar, const
> unsigned int file_version)
>     {
>       /////////////////////////////////////////////////////////////////////
>       /* Now the right thing to do over here is
>         ar & tmpMap;
>         ar & a;
>         ar & d;
>         ar & stringList;
>       */
>
> ///////////////////////////////////////////////////////////////////////
>       //But instead, if by mistake user writes something like
>         ar & a;
>         ar & d;
>         ar & stringList;
>        ar & tmpMap;
>      /*
>          So how to handle such problem?
>          Can I validate data somehow before it gets deserialized?
>          On some platforms like SuSE linux I have observed that such thing
> doesn't throw exception and we get SEGV.
>      */
>     }
>
> };
>
> Thanks,
> Sameer
>
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