Re: Persistence Library Needed in Boost? (Was: [boost] A tip from the Dr.)

From: quendezus (quendez_at_[hidden])
Date: 2002-01-28 12:17:09

--- In boost_at_y..., Emily Winch <emily_at_b...> wrote:
> 
> quendezus said:
> 
> > All these persistence libraries are intrusive (you have to use a 
base  
> > class). Some of them don't use serialization. They all heavily 
rely  
> > on runtime polymorphism. I think a boost persistence library 
should  
> > be non intrusive and should use template programming. 
> 
> External polymorphism would give you the runtime polymorphism 
without the
> intrusiveness. It would be nice to be able to turn that off, 
though, for
> circumstances where the structure is known at compile time: and 
easily,
> since "the structure will be known at compile time" sounds like one 
of those
> things in requirements documents that gets changed when you already 
wrote
> everything :)
> 
> Emily
> 

Yes, I have tried external polymorphism successfully for a 
persistence system. I will think about your idea of being able to 
switch easily between a compile time mechanism and a runtime one.

Sylvain