[ZODB-Dev] Re: property broken with/by ZODB?

[Chris Cioffi]

I guess I should mention that I'm using ActivePython 2.3.2 and ZODB 3.2.3.

Chris

On Tue, 17 Aug 2004 14:39:41 -0400, Chris Cioffi <evenprimes at gmail.com> wrote:
> I'm converting a bunch of dicts into proper classes and am having some
> problems using the property builtin.  When I derive the class from
> Persistent my properties don't work.  Here's an example:
> 
> import os.path
> 
> import ZODB
> from Persistence import Persistent
> 
> class PersistentProp(Persistent):
>   def __init__(self):
>       self.filename = 'c:\\somedir\\somefile.txt'
> 
>   def get_basename(self):
>       return os.path.basename(self.filename)
> 
>   basename = property(get_basename)
> 
> class ObjectProp(object):
>   def __init__(self):
>       self.filename = 'c:\\somedir\\somefile.txt'
> 
>   def get_basename(self):
>       return os.path.basename(self.filename)
> 
>   basename = property(get_basename)
> 
> if __name__ == '__main__':
>   obj = PersistentProp()
>   print 'The Persistent aware object'
>   print obj.basename
> 
>   obj = ObjectProp()
>   print 'The "normal" object'
>   print obj.basename
> 
> When I run this I get:
> The Persistent aware object
> <property object at 0x00891288>
> The "normal" object
> somefile.txt
> 
> Since the whole point is to keep this as transparent as possible to
> the rest of the code having to go back in and make some things method
> calls and others attribute references it rather hurts long term
> maintainability.
> 
> Any ideas on what's going on here?
> 
> Thanks!
> 
> Chris
> --
> Still searching for an even prime > 2!
> 


-- 
Still searching for an even prime > 2!