resteasy-developers

[Resteasy-developers] RESTeasy and Hot Deployed Seam Components

[da k. <reg...@ya...>]

Hello,

I'm trying to get RESTeasy to work with Seam hot-deployed components, but I can't figure it out. Because this is a mailing list, I will copy my posting from seamframework.org . If someone can give me some hints,  I will post them to the seam forum as well.


My project is using seam components, no EJBs. So all my action classes
go to WEB-INF/dev and therefore are not visible for classes deployed
outside, because of the custom seam class loader, right? 



So when I want to use a Seam and JAX-RS annotated
action class (@NAME, @PATH at Class, and @GET at method) with RESTeasy,
it fails to find it, because it scans in WEB-INF/classes by default.
Even when I configure RESTeasy with context param resteasy.resources including the fully qualified class name, I get a ClassNotFoundException. 




Ok, then I tried to put the action class in model directory, changed package name and corresponding resteasy.resources
param. Now RESTeasy finds the class and tries to process the @GET
marked action method, but it fails with an NPE when using the injected
EntityManager. I guess there is no DI happening? But I want to load the
RESTeasy/JAXB annotated entity... 




So, the questions are: 




Is there a way for RESTeasy to load seam components in WEB-INF/dev? 




If not, can I use the @In Annotation for the EntityManager to get access to seam managed persistence context in RESTeasy? 



All the examples I found are using EJB/Seam
components, not regular seam beans. Anyone got this to work? Thanks for
any pointers...
Regen
PS: I'm using RESTeasy Beta 5, Seam 2.0.2.SP1, JBoss 4.2.2.GA




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Re: [Resteasy-developers] RESTeasy and Hot Deployed Seam Components

[Ryan M. <rmc...@sa...>]

Regan,

 

Seam support is something that I'd like to get in at some point, and I
did have it working in some of the very early versions of RESTEasy. I
doubt we'd be able to get Seam support in 1.0, but it's on my radar for
a future release. 

 

To answer your question about the use of a Seam-managed EntityManager in
a Resource: you've have to be able to have the Resource double as a Seam
component otherwise you will get an NPE. Once I get the MultipartData
support wrapped up, I'll have a look at the class loader stuff and
proper Seam integration.

 

Ryan-

 

Ryan J. McDonough 
Platform, Specialist Java EE | Sapient 
25 First Street
Cambridge, MA 02141
desk:  +1 617 761 1611
mobile: +1 508 735 4503
fax: +1 617 621 1300


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From: res...@li...
[mailto:res...@li...] On Behalf Of
da kna
Sent: Wednesday, June 18, 2008 8:46 AM
To: res...@li...
Subject: [Resteasy-developers] RESTeasy and Hot Deployed Seam Components

 

Hello,

I'm trying to get RESTeasy to work with Seam hot-deployed components,
but I can't figure it out. Because this is a mailing list, I will copy
my posting from seamframework.org
<http://seamframework.org/Community/HotDeploymentEntityManagerAndRESTeas
yProblem> . If someone can give me some hints,  I will post them to the
seam forum as well.

My project is using seam components, no EJBs. So all my action classes
go to WEB-INF/dev and therefore are not visible for classes deployed
outside, because of the custom seam class loader, right? 

 

So when I want to use a Seam and JAX-RS annotated action class (@NAME,
@PATH at Class, and @GET at method) with RESTeasy, it fails to find it,
because it scans in WEB-INF/classes by default. Even when I configure
RESTeasy with context param resteasy.resources including the fully
qualified class name, I get a ClassNotFoundException. 

 

Ok, then I tried to put the action class in model directory, changed
package name and corresponding resteasy.resources param. Now RESTeasy
finds the class and tries to process the @GET marked action method, but
it fails with an NPE when using the injected EntityManager. I guess
there is no DI happening? But I want to load the RESTeasy/JAXB annotated
entity... 

 

So, the questions are: 

 

Is there a way for RESTeasy to load seam components in WEB-INF/dev? 

 

If not, can I use the @In Annotation for the EntityManager to get access
to seam managed persistence context in RESTeasy? 

 

All the examples I found are using EJB/Seam components, not regular seam
beans. Anyone got this to work? Thanks for any pointers...

 

Regen


PS: I'm using RESTeasy Beta 5, Seam 2.0.2.SP1, JBoss 4.2.2.GA

 

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Re: [Resteasy-developers] RESTeasy and Hot Deployed Seam Components

[Bill B. <bb...@re...>]

No, I don't have Seam integration.  I'm also not sure it fits.  Seam 
maintains a conversation between the client and the server which is kind 
of against the REST principal of statelessness.  If you're just looking 
to be able to use the @PersistenceContext annotation to inject JPA 
references, you could use an EJB to do this.  Just use the JAX-RS 
annotations on the EJB's business interface and use the

resteasy.jndi.resources


http://wiki.jboss.org/wiki/RESTeasyEJBIntegration

for more information.

da kna wrote:
> Hello,
> 
> I'm trying to get RESTeasy to work with Seam hot-deployed components, 
> but I can't figure it out. Because this is a mailing list, I will copy 
> my posting from seamframework.org 
> <http://seamframework.org/Community/HotDeploymentEntityManagerAndRESTeasyProblem>. 
> If someone can give me some hints,  I will post them to the seam forum 
> as well.
> 
> My project is using seam components, no EJBs. So all my action classes 
> go to WEB-INF/dev and therefore are not visible for classes deployed 
> outside, because of the custom seam class loader, right?
> 
> 
> So when I want to use a Seam and JAX-RS annotated action class (@NAME, 
> @PATH at Class, and @GET at method) with RESTeasy, it fails to find it, 
> because it scans in WEB-INF/classes by default. Even when I configure 
> RESTeasy with context param resteasy.resources including the fully 
> qualified class name, I get a ClassNotFoundException.
> 
> 
> Ok, then I tried to put the action class in model directory, changed 
> package name and corresponding resteasy.resources param. Now RESTeasy 
> finds the class and tries to process the @GET marked action method, but 
> it fails with an NPE when using the injected EntityManager. I guess 
> there is no DI happening? But I want to load the RESTeasy/JAXB annotated 
> entity...
> 
> 
> So, the questions are:
> 
> 
> Is there a way for RESTeasy to load seam components in WEB-INF/dev?
> 
> 
> If not, can I use the @In Annotation for the EntityManager to get access 
> to seam managed persistence context in RESTeasy?
> 
> 
> All the examples I found are using EJB/Seam components, not regular seam 
> beans. Anyone got this to work? Thanks for any pointers...
> 
> 
> Regen
> 
> 
> PS: I'm using RESTeasy Beta 5, Seam 2.0.2.SP1, JBoss 4.2.2.GA
> 
> 
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> 
> Dem pfiffigeren Posteingang.
> 
> 
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-- 
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com

Re: [Resteasy-developers] RESTeasy and Hot Deployed Seam Components

[Jay B. <te...@gm...>]

It sounds like this is similar to what I was thinking about with seam at the
NEJUG talk .  It is not really integration, more compatibility.

Take this example : I have a Seam component (EJB or POJO does not matter -
but most likely stateless) and I also want to have if accessible through a
restful call, I should be able to put the correct annotations on it with
resteasy and have it work.  This would mean either a combined WAR with seam
app, and resteasy servlet, or separate wars in an EAR, or something like
that.

I see seam and resteasy working together really two primary ways.  Either
the way described above -  as different ways to access/manipulate the
underlying component.  The other would be Seam using restful calls
internally as a result of a user action, or to pull data for the UI.  These
internal restful calls would not really be integration either, but more like
a data source, or remote EJB call via rest.

The question is - do the co-exist well, not do work together and know about
each other.

My $.02,

-Jay

On Wed, Jun 18, 2008 at 9:30 PM, Bill Burke <bb...@re...> wrote:

> No, I don't have Seam integration.  I'm also not sure it fits.  Seam
> maintains a conversation between the client and the server which is kind
> of against the REST principal of statelessness.  If you're just looking
> to be able to use the @PersistenceContext annotation to inject JPA
> references, you could use an EJB to do this.  Just use the JAX-RS
> annotations on the EJB's business interface and use the
>
> resteasy.jndi.resources
>
>
> http://wiki.jboss.org/wiki/RESTeasyEJBIntegration
>
> for more information.
>
> da kna wrote:
> > Hello,
> >
> > I'm trying to get RESTeasy to work with Seam hot-deployed components,
> > but I can't figure it out. Because this is a mailing list, I will copy
> > my posting from seamframework.org
> > <
> http://seamframework.org/Community/HotDeploymentEntityManagerAndRESTeasyProblem
> >.
> > If someone can give me some hints,  I will post them to the seam forum
> > as well.
> >
> > My project is using seam components, no EJBs. So all my action classes
> > go to WEB-INF/dev and therefore are not visible for classes deployed
> > outside, because of the custom seam class loader, right?
> >
> >
> > So when I want to use a Seam and JAX-RS annotated action class (@NAME,
> > @PATH at Class, and @GET at method) with RESTeasy, it fails to find it,
> > because it scans in WEB-INF/classes by default. Even when I configure
> > RESTeasy with context param resteasy.resources including the fully
> > qualified class name, I get a ClassNotFoundException.
> >
> >
> > Ok, then I tried to put the action class in model directory, changed
> > package name and corresponding resteasy.resources param. Now RESTeasy
> > finds the class and tries to process the @GET marked action method, but
> > it fails with an NPE when using the injected EntityManager. I guess
> > there is no DI happening? But I want to load the RESTeasy/JAXB annotated
> > entity...
> >
> >
> > So, the questions are:
> >
> >
> > Is there a way for RESTeasy to load seam components in WEB-INF/dev?
> >
> >
> > If not, can I use the @In Annotation for the EntityManager to get access
> > to seam managed persistence context in RESTeasy?
> >
> >
> > All the examples I found are using EJB/Seam components, not regular seam
> > beans. Anyone got this to work? Thanks for any pointers...
> >
> >
> > Regen
> >
> >
> > PS: I'm using RESTeasy Beta 5, Seam 2.0.2.SP1, JBoss 4.2.2.GA
> >
> >
> > ------------------------------------------------------------------------
> > Gesendet von Yahoo! Mail
> > <
> http://us.rd.yahoo.com/mailuk/taglines/isp/control/*http://us.rd.yahoo.com/evt=52427/*http://de.overview.mail.yahoo.com
> >.
> >
> > Dem pfiffigeren Posteingang.
> >
> >
> > ------------------------------------------------------------------------
> >
> > -------------------------------------------------------------------------
> > Check out the new SourceForge.net Marketplace.
> > It's the best place to buy or sell services for
> > just about anything Open Source.
> > http://sourceforge.net/services/buy/index.php
> >
> >
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > Resteasy-developers mailing list
> > Res...@li...
> > https://lists.sourceforge.net/lists/listinfo/resteasy-developers
>
> --
> Bill Burke
> JBoss, a division of Red Hat
> http://bill.burkecentral.com
>
> -------------------------------------------------------------------------
> Check out the new SourceForge.net Marketplace.
> It's the best place to buy or sell services for
> just about anything Open Source.
> http://sourceforge.net/services/buy/index.php
> _______________________________________________
> Resteasy-developers mailing list
> Res...@li...
> https://lists.sourceforge.net/lists/listinfo/resteasy-developers
>



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