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From "Thomas Dudziak (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (OJB-20) Allow the use of collection-factory
Date Sun, 08 May 2005 17:23:05 GMT
     [ http://issues.apache.org/jira/browse/OJB-20?page=all ]
Thomas Dudziak resolved OJB-20:

     Resolution: Fixed
    Fix Version: 1.1 CVS

> 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
>      Fix For: 1.1 CVS
>  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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