[Zope-dev] Unique and Contant object IDs

[Chris Withers]

Toby Dickenson wrote:
> 
> > Yeah, I'd love an ID I could use to grab an object no matter how often
> > it was used.
> 
> I suspect you will have to build this yourself. Store a sufficiently random
> id inside your objects when they are created, and use a ZCatalog to index
> them.

blech! ;-)

> > Why wouldn't the following work though:
> >
> > ...in a class method...
> >
> > self.theobject = theObject
> >
> > ...where theObject is something I want a reference to and self is a
> > persistent class...
> 
> theObject would need to be persistent too. This has a number of
> characteristics that I would class as problems, but may be exactly what you
> want:
> 
> * theObject will have different acquisuition context when accessed through
> its main path, and through self.theobject. This means different:
>    * security

:-(

>    * absolute_url

...that'd probably behaev how I'd want

>    * configuration obtained through acquisition. What if theObject is
> CatalogAware?

CatalogAware is the work of the devil anyway ;-) ZPatterns ahs got to be
better for doing that kindof stuff ;-)

> * theObject isnt removed from the database when it is deleted from its
> folder; this other reference keeps it alive.

That, too, would be what I want... although I can think of other
situations where that would be bad... argh!

cheers,

Chris