Hi,
What version of Jersey are you using?
Did you make any progress? did you get the bookmark example working?
It is hard to know what exactly is going on. If you could send a
simple reproducible example as a zip file we could have a look at it.
Paul.
On Dec 24, 2008, at 6:08 AM, saturon wrote:
> Hello,
>
> Well I just cannot get jersey to inject entitymanagerfactory (JNDI
> lookup works though...).
>
> - I use glassfishv2ur2, jersey 1.0.1, toplinkessentials
> - I have the exact same configuration as in the bookmark example
> EXCEPT:
>
> Using:com.sun.jersey.server.impl.container.servlet.ServletAdaptor in
> web.xml gives me:
> ...
> Weaver processing class [foo.model.ent.NlUser].
> end predeploying Persistence Unit NightlifeServer2PU; state
> Predeployed;
> factoryCount 1
> PWC1412: WebModule[/NightlifeServer2]-ServletContext.log():PWC1409:
> Servlet ServletAdaptor wird als nicht verfügbar markiert
> WebModule[/MyServer2]Error loading WebappClassLoader
> delegate: true
> repositories:
> /WEB-INF/classes/
> ----------> Parent Classloader:
> EJBClassLoader :
> urlSet = []
> doneCalled = false
> Parent -> java.net.URLClassLoader_at_e5f46e
> com.sun.jersey.server.impl.container.servlet.ServletAdaptor
> java.lang.ClassNotFoundException:
> com.sun.jersey.server.impl.container.servlet.ServletAdaptor
>
> Using the com.sun.jersey.spi.container.servlet.ServletContainer in
> web.xml and my EntityManagerFactory is null. I use
>
> @PersistenceUnit(unitName = "MyPU")
> EntityManagerFactory emf;
>
> And then im my get of the resource (exactyl like in the bookmark
> example):
> final EntityManager em = emf.createEntityManager();
> TransactionManager.manage(new Transactional(em) { public void
> transact() {
> em.merge(userConfig);
> }});
>
> So I am not seeing what im doing wrong here.
>
> -----Original Message-----
> From: Florian Hars [mailto:hars_at_bik-gmbh.de]
> Sent: Montag, 22. Dezember 2008 12:13
> To: users_at_jersey.dev.java.net
> Subject: Re: [Jersey] Jersey and JPA best practices?
>
>
> Paul Sandoz schrieb:
>> Complete injection support equivalent to that on Servlet is not
>> currently implemented.
>
> That might explain why it didn't work :-). Anyway, what are the thread
> safety properties of jersey resources? Would it even be useful to
> inject
> an EntityManager or would you run into concurrency issues?
>
>> What servlet class are you using for your web application?
>
> Ah, that is the secret sauce, you have to use
> com.sun.jersey.server.impl.container.servlet.ServletAdaptor
> instead of com.sun.jersey.spi.container.servlet.ServletContainer
> if you want it to give you an EntityManagerFactory.
>
> Maybe somebody should add an item to the FAQ that explains the
> following
> points:
>
> 1. You must use the mentioned ServletAdaptor class.
> 2. You must specify the persistence unit as an init-param
> to the servlet.
> 3. You can only inject via @PersistenceUnit EntityManagerFactory emf =
> ... 4. How to use EntityManagers created by that Factory to avoid
> threading problems in your jersey resources
> 5. How to use transactions in jersey resouces.
> (have I missed anything?)
>
> The answers are all implicit in the bookmarks example, but it might
> help
> people if they are written down with some short explanations.
>
> - Florian.
>
> PS: Koan for today:
> After making the change, the glassfish first gave me:
>
> java.lang.ClassCastException: com.example.jpa.User cannot be cast to
> com.example.jpa.User
>
> After playing around and finally redeploying the same code, everything
> works. Classloader madness?
>
>
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