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Date: Wed, 26 Jul 2006 10:06:03 -0600
From: "Chad Schoettger" <chad.schoettger@gmail.com>
To: "Beehive Users" <user@beehive.apache.org>
Subject: Re: EJB Control doesn't work on java class
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Hi Max,

As Chris said the reason you are getting the npe is because the
control is not being instantiated.

You can use a Beehive control directly from a JSP, it sounds like that
might work for you in this case.  I've attached a sample JSP file from
the Beehive controls-spring sample which demonstrates how to use a
control from a JSP.  You don't need Spring to do this -- this was just
the first sample I came across.

  - Chad

On 7/26/06, Chris Hogue <cshogue@gmail.com> wrote:
> Hi Max,
>
> I'm not sure you can use @Control instantiation in a regular Java
> class. I don't believe there's anything that triggers the
> instantiation. When you run in a page flow or another control those
> have a "control container" that handles this.
>
> Have you tried programmatic instantiation as described here?
>
> http://beehive.apache.org/docs/1.0.1/controls/programming.html#Programmatic+Instantiation
>
>
> -Chris
>
>
> On 7/26/06, Ricci, Massimiliano (HPS C&I, HP-Italy)
> <massimiliano.ricci@hp.com> wrote:
> > Hi folks,
> >
> > I'm trying to use Beehive EJB control in my project.
> > I've done two tests.
> > In the first one I've created a Session EJB ("ProvaSessionBean") using
> > IBM Application Server Toolkit (AST), with just one method (String
> > welcomeName (String name)), and imported (the jar file) it on BEA
> > Workshop 9.2.0 for Weblogic Platform. I've created a new "Dynamic Web
> > Project" using Beehive facets (Controls & NetUI). By the wizard I've
> > created an EJB Control (filling the field "JNDI Name" with the value in
> > META-INF\ibm-ejb-jar-bnd.xmi ("ejb/ejbs/ProvaSessionBeanHome") and from
> > META-INF\ejb-jar.xml for Home/Business Interface
> > ("ejbs.ProvaSessionBean" and "ejbs.ProvaSessionBeanHome")).
> >
> > In Controller class I've instanced the EJB Control by annotation
> > (@Control) and call the EJB method in the Controller method. I've
> > exported the ear file and deployed it on IBM WebSphere Application
> > Server 6.1
> > In this case all work correctly.
> >
> > Then I've tried to use the EJB Control in a normal Java class.
> > I've imported the EJB (jar) in my project, and created a "Dynamic Web
> > Project" not using Beehive technology (in particular Beehive NetUI).
> > I've imported jar to use EJB Control (beehive-controls.jar,
> > beehive-ejb-control.jar) and created EJB Control
> > (ProvaSessioBeanCtrl.java) following the same step described above. Then
> > I've created a (simple) Java class (Prova.java) to instance the control
> > (using annotation @Control) and use EJB method, and a jsp page where I
> > called this java class.
> > I've exported the ear file and deployed it on IBM WebSphere Application
> > Server 6.1.
> > When I've tested the application a "java.lang.NullPointerException" was
> > generated because the EJB Control in java class not was instanced!
> > I've checked that every class by APT was created (Prova.class,
> > Prova.controls.properties, ProvaClientInitializer.class,
> > ProvaSessioBeanCtrl.class, ProvaSessioBeanCtrlBean.class,
> > ProvaSessioBeanCtrlBean.class.manifest,
> > ProvaSessioBeanCtrlBeanBeanInfo.class) and all seems correct.
> >
> > Have anybody some idea because EJB Control doesn't work on java class?
> > Is it possibile use Beehive EJB Control (or Beehive Control in general)
> > in a Java class instead in a PageFlow?
> >
> > Thanks in advance,
> > Max
> >
>

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