[Zope] Object reference and the _SetObject() method

[Martijn Pieters]

At 11:50 19/10/99 , Johan Carlsson wrote:
> > >    My questions!
> > >
> > >    Is this correct to do this or can I get my self
> > >    in trouble doing direct reference in this way?
> > You will eventually ;-) Especially if your objects are not Zope objects
> > that follow the Zope management interface.
>
>But what could happen, if I keep record of the references, where could
>it break? And yes I'm going the link only objects with Management Interface.

Nothing. Just because the Zope management interface uses a hierarchical 
structure, doesn't mean that every object cannot be referenced more then once.


>Here's what I whan to do:
>
>I want to create superclasses for bidirectional links between Zope
>objects. The link object has a object _link thats a object referense
>to the other object. The other objects has a list of links to it
>so when it's deleted it can notify the link object. Have been looking
>in ObjectManager if one can use the manage_beforedelete method
>to handle the delete through a tree.

manage_beforeDelete would be the way to handle this, yes. Just remember, 
that other classes might also define this method.

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Martijn Pieters, Web Developer
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