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Posted to ojb-dev@db.apache.org by "Thomas Dudziak (JIRA)" <ji...@apache.org> on 2005/04/23 16:45:25 UTC
[jira] Commented: (OJB-20) Allow the use of collection-factory
[ http://issues.apache.org/jira/browse/OJB-20?page=comments#action_63582 ]
Thomas Dudziak commented on OJB-20:
-----------------------------------
I checked in a collection factory implementation that should fulfill your needs. Please test it and let me know whether it works.
> Allow the use of collection-factory
> -----------------------------------
>
> Key: OJB-20
> URL: http://issues.apache.org/jira/browse/OJB-20
> Project: OJB
> Type: New Feature
> Components: PB-API
> Versions: 1.1 CVS
> Reporter: Martin Taal
> Assignee: Thomas Dudziak
> Attachments: patch_coll_factory.txt
>
> Hi,
> This is a request for allowing a user to specify a collection-factory for a collection-descriptor. The collection factory is used to create collection instances when the owner of the collection is read from the database.
> In my usecase I need to pass runtime information to the constructor of the collection (i.e. the collection needs its owning object). This is for example for handling a notification infrastructure in which changes to the collection are broadcasted to listeners who need to know from which object the notification comes. The current collection-class implementation in ojb 'only' supports zero-argument constructors which do not handle my usecase.
> I have made an implementation of the collection-factory in ojb which I will try to attach (as a patch) to this request or otherwise send to the ojb-dev mailing list. If I can be of help to get this implemented then please let me know.
> gr. Martin Taal
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