[TransWarp] First attempt to use the storage package in PEAK
roche at upfrontsystems.co.za
Tue Dec 24 07:46:07 EST 2002
On Tue, Dec 24, 2002 at 11:19:58AM +0200, Roch? Compaan wrote:
> Hi Philip
> Here is my first quick attempt to use the storage package in PEAK.
> Creating new instances work fine but loading and saving doesn't work
> yet. My use of the binding package is still a shot in the dark. Can you
> maybe comment on the way I used the various parts of PEAK below:
Subclassing from model.Element seems to break persistence, maybe because
__setattr__ is bound to binding.Base.__setattr__ (line 42,48 in
class Element(DataType, Persistent):
"""A (potentially persistent) domain element"""
__implements__ = IElement
__metaclass__ = ElementClass
__setattr__ = binding.Base.__setattr__
The call to __setattr__ in Persistence.Persistent seems necessary to
turn a ghost into a loaded object.
If I subclass 'Contact' from Persistent everything works fine.
Upfront Systems http://www.upfrontsystems.co.za
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