Re: [Boost-users] [Serialisation] Question onshared_ptr'sandbase/derived classes

From: Hughes, James (jhughes_at_[hidden])
Date: 2007-05-03 03:52:38

I have now fixed this problem - I needed to add BOOST_CLASS_EXPORT_GUID
code to my derived classes and it all started working. There was also an
issue with NVP around a base class which required
BOOST_SERIALIZATION_BASE_OBJECT_NVP.

Thanks to all for the help.

Rgds

James

> -----Original Message-----
> From: boost-users-bounces_at_[hidden] 
> [mailto:boost-users-bounces_at_[hidden]] On Behalf Of 
> Hughes, James
> Sent: 02 May 2007 14:18
> To: boost-users_at_[hidden]
> Subject: Re: [Boost-users] [Serialisation] Question 
> onshared_ptr'sandbase/derived classes
> 
> 
> > -----Original Message-----
> > From: boost-users-bounces_at_[hidden]
> > [mailto:boost-users-bounces_at_[hidden]] On Behalf Of 
> Robert Ramey
> > Sent: 02 May 2007 14:08
> > To: boost-users_at_[hidden]
> > Subject: Re: [Boost-users] [Serialisation] Question on 
> > shared_ptr'sandbase/derived classes
> > 
> > Hughes, James wrote:
> > > Hi All,
> > >
> > > I am trying to serialise a vector of shared_ptr's which 
> point to a 
> > > base class which may be one of a number of derived class (Not 
> > > polymorphic in that the base class has no virtual functions
> > - its just
> > > supplies base functionality to derived classes)
> > 
> > I don't think this is generally possible.
> > 
> > The default extended type info relies on dynamic cast for 
> downcasting.
> > 
> > Try making at least one function in the base class virtual.
> 
> Hello Robert,
> 
> I just had a look through the class, and it does have some 
> virtual functions so that doesn't appear to be the problem. 
> Would just having a virtual destructor be good enough anyway?
> 
> 
> > 
> > Robert Ramey
> > 
> > 
> > 
> > _______________________________________________
> > Boost-users mailing list
> > Boost-users_at_[hidden]
> > http://lists.boost.org/mailman/listinfo.cgi/boost-users
> > 
> 
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