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

[Jürgen Kartnaller]

Gary Poster wrote:
> 
> 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.

yes

   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-----
>>> Hash: SHA1
>>> 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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