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

From: Jeff Flinn (TriumphSprint2000_at_[hidden])
Date: 2007-11-08 11:30:51

Oliver Kania wrote:
> 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 ?

... Please don't top post!

>     ===================================================
>        template<class Archive>
                 void save( Archive &ar, unsigned int version) const {

replace these:

>                    m_offlineMode = true;
>                    // we cannot load more when offline --> always cachedAll
>                    bool oldCachedAll = m_CachedAll;
>                    m_CachedAll   = true;
>                    ar & m_CachedAll;
>                    ar & m_offlineMode;

with:
                     ar << true;
                     ar << true;

>                    // 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

remove these:
>                    m_CachedAll = oldCachedAll;
>                    m_offlineMode = false;
>                }

then there's no need for mutable nor const_cast.

Jeff Flinn