[Zope3-dev] Re: Question regarding zc.relationship

[Gary Poster]

On Jun 27, 2007, at 12:21 PM, Jürgen Kartnaller wrote:

> We store >100K relations this way.

Cool.

> ZODB loads the referenced objects on demand.

Very true.

Additionally, I imagine Jürgen is using integer tokens, such as  
intids, to represent the objects within the index.  Using that  
approach in particular, you should get the best results.  The  
zc.relationship.intid.Container factory creates a container like  
this, for instance.

Gary

>
> Jürgen
>
> Andreas Kopecky wrote:
>> -----BEGIN PGP SIGNED MESSAGE-----
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>> Hello!
>> I got a question regarding the Relationship container part of
>> zc.relationship:
>> I realized that the Relationship class stores the objects which  
>> belong
>> to the relation (source and target) as normal (strong?) python  
>> reference
>> inside the Relationship object. My question: Is there and performance
>> issue or data integrity issue to be expected when i store >10k or  
>> such
>> relations with such behavior in the ZODB? I would have expected the
>> Relationship class to use weak references to store the related  
>> objects.
>> thanks in advance!
>> - -regards
>> Andreas Kopecky
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>
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