On Tue, May 18, 2010 at 6:07 PM, Karen Etheridge <p...@froods.org> wrote: > On Tue, May 18, 2010 at 11:59:57PM +0200, Heiko Jansen wrote: >> Dear Moose-icians, > > Heh, I like that one! > >> But how am I supposed to tackle this problem using Moose/PRANG? Changing the >> 'isa' property of Moose attributes at runtime based on the value of another >> attribute (holding the MODS version number) seems weird. >> I'd be glad if someone could describe possible solutions and/or point to >> existing code solving this kind of problem. > > How about a parameterized role that took the version number as a parameter? > Then you could define the attribute type constraints with that version in > mind, and all the work would be done at compile time.
I'm not sure about PRANG but this should be achievable for Serialization (ie: to XML) with XML::Toolkit. I'm not entirely sure how to handle parsing this way though, at least not off the top of my head. I kinda like the idea of this actually, though I have no clue how to formalize it in the context of something like XML::Toolkit or PRANG. -Chris
