Re: [Boost-users] Serialization: problems when splittingserialize into load / save

From: Oliver Kania (kania.oliver_at_[hidden])
Date: 2007-11-08 10:02:53

Hello and thx
I guess that means I cannot change class state in my save method.
That is what I need ! Is there any way around it ?

regards, Oliver

On Nov 8, 2007 3:47 PM, Oliver Mutz <omutz_at_[hidden]> wrote:

> Hello Oliver,
>
> Your save method has to be const.
>
> Regards
>
> Oliver
>
> ________________________________
>
> Von: boost-users-bounces_at_[hidden]
> [mailto:boost-users-bounces_at_[hidden]] Im Auftrag von Oliver Kania
> Gesendet: Donnerstag, 8. November 2007 15:16
> An: boost-users
> Betreff: [Boost-users] [Boost Users] Serialization: problems when
> splittingserialize into load / save
>
>
> Hello out there !
> I have an urgent problem concerning boost::serialize.
> I have split the serialize operation into save / load as described
> in the tutorial:
> ===================================================
>    template<class Archive>
>            void save( Archive &ar, unsigned int version) {
>                m_offlineMode = true;
>                // we cannot load more when offline --> always cachedAll
>                bool oldCachedAll = m_CachedAll;
>                m_CachedAll   = true;
>                ar & m_CachedAll;
>                ar & m_offlineMode;
>                // do not serialize the lock -- use the default
> constructor.
>                // we assume that no iterators that lock the cache do exist
> when serializing.
>                // ar & m_Lock;
>                ar & m_LookupId;
>                ar & m_LookupName;
>                ar & m_SequenceNumber;
>                //reset old state for the case we want to continue working
>                m_CachedAll = oldCachedAll;
>                m_offlineMode = false;
>            }
>
>            template<class Archive>
>            void load( Archive &ar, unsigned int version) {
>
>                ar & m_CachedAll;
>                ar & m_offlineMode;
>                // do not serialize the lock -- use the default
> constructor.
>                // we assume that no iterators that lock the cache do exist
> when serializing.
>                // ar & m_Lock;
>                ar & m_LookupId;
>                ar & m_LookupName;
>                ar & m_SequenceNumber;
>                //reset old state for the case we want to continue working
>            }
>            BOOST_SERIALIZATION_SPLIT_MEMBER()
> ===============================================================
>
> The class I serialize is part of a deep class hierarchy that I want to
> serialize as a whole.
> With the standard serialize() it seems to work, but now the compiler
> complains
> ( when I
> want to perform the actual serialization):
>
> error C2662: 'void
> jedox::palo::AbstractCache<C,Exception>::save<Archive>(Archive &,unsigned
> int)' :
> cannot convert 'this' pointer from 'const
> jedox::palo::AbstractCache<C,Exception>' to
> 'jedox::palo::AbstractCache<C,Exception> &'
>
> AbstractCache is the class containing the above load / save operations
>
> kind regards,
> Oliver
>
>
>
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