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Re: [eclipselink-users] Dynamic FetchGroup usage

Have you looked at static weaving? It's simple and foolproof using an ant task.

On Dec 1, 2010 10:44 AM, "MarcNuri" <marc@xxxxxxxxxxxx> wrote:
> Thanks for your reply James.
> I spent a while investigating the problem and I found out that my problem
> was (is) what you're saying, you need weaving enabled to be able to use
> FetchGroups. By the way, that is clearly explained in the javadoc (my fault
> not reading thoroughly).
> The problem is that I'm not using weaving. I came to FetchGroups in first
> place because of the deprecation alert in the "addPartialAttribute(...)"
> method in org.​eclipse.​persistence.​queries.​ObjectLevelReadQuery. The api
> clearly states the following: "Deprecated. since EclipseLink 2.1, partial
> attributes replaced by fetch groups.".
> The thing is that you can use partial attributes without weaving but that's
> not the case with the replacement approach via FetchGroups.
> So my question now is if this means that if I update to future versions of
> EclipseLink I'm going to loose functionality or in the other hand there is
> something else I can do (apart from enabling weaving).
> To answer why I'm not using weaving: Weaving is really easy to enable, you
> just have to add " -javaagent:(path to eclipselink.jar)", unfortunately in
> my development environment (Netbeans), this is the exception I get when
> turning on the feature:
> ++++++++++++++++++++++++++++++++++++++++++
> Exception Description: Persistence unit $puName is defined in both
> URL:file:/F:/$path/build/classes/ and URL:file:/F:/$path/src/. Cannot have
> several persistence units with the same name loaded by the same classloader.
> ++++++++++++++++++++++++++++++++++++++++++
> I've found no easy way of correcting this error and waving is not a real
> priority in my projects (for now).
> Regards
> P.S. If anyone knows a way I can bypass any of the prior issues, help is
> appreciated.
> --
> Marc Nuri
> --
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