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Posted to user@geronimo.apache.org by Willi Nüßer <Wi...@gmx.net> on 2006/11/10 14:36:25 UTC
ClassCastException in org.openejb.client.CgLibProxy
Hi all,
I know it must be something trivial (config ...) but I'm at a loss.
Can't find anything related in the web, groups etc.
The problem:
running a very simple standalone HelloWorld client against
a corresponding EJB app in Geronimo 1.1.1 gives
the following error message:
> java echo.client.SayHelloClient
java.lang.ClassCastException: org.openejb.client.CgLibProxy$$EnhancerByCGLIB$$28a286c9
at org.openejb.client.CgLibProxy$$EnhancerByCGLIB$$eaec4f0a.create(<generated>)
at de.fhdw.echo.client.SayHelloClient.getEJBReference(SayHelloClient.java:43)
at echo.client.SayHelloClient.main(SayHelloClient.java:53)
Exception in thread "main" java.lang.NullPointerException
at echo.client.SayHelloClient.main(SayHelloClient.java:55)
There are no errors logged to the log file. JNDI access seems
to work, deployment in geronimo, too.
So, can anyone pls give me a hint.
TIA
Willi
PS:
Relevant source client code:
private static final String PURE_JNDI_HELLOBEAN = "echo.HelloBean";
private static HelloBean hellobean;
private static void getEJBReference () {
Properties props = new Properties();
props.put("java.naming.factory.initial",
"org.openejb.client.RemoteInitialContextFactory");
props.put("java.naming.provider.url", "127.0.0.1:4201");
props.put("java.naming.security.principal", "system");
props.put("java.naming.security.credentials", "manager");
try {
javax.naming.InitialContext initialContext =
new javax.naming.InitialContext(props);
Object objRef = initialContext.lookup(PURE_JNDI_HELLOBEAN);
HelloBeanHome hellobeanHome = (HelloBeanHome)
PortableRemoteObject.narrow(objRef, HelloBeanHome.class);
>> crash here
hellobean = hellobeanHome.create();
} catch (Exception ex) {
ex.printStackTrace();
}
}
--
GMX DSL-Flatrate 0,- Euro* - Überall, wo DSL verfügbar ist!
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Re: ClassCastException in org.openejb.client.CgLibProxy
Posted by Willi Nüßer <wi...@gmx.net>.
Christoph, Manu
thanks for your reply.
To Manu:
Geronimo reports the Application to be running
in the console. Furthermore: the usual JNDI naming problems
were solved before. So I can't see any connection to 2297.
But perhaps I'm only looking at the wrong places ...
To Chris:
the ejb-bar.xml seems to give the correct information. It is appended below.
Best
Willi
=== ejb-jar.xml ===
<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar id="ejb-jar_1"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd"
version="2.1">
<description>J2EE Hello-Beispiel</description>
<display-name>J2EEHelloBean</display-name>
<enterprise-beans>
<session id="Session_Hello">
<description>Eine triviale EJB HelloBean</description>
<display-name>HelloBean</display-name>
<ejb-name>HelloBean</ejb-name>
<home>echo.HelloBeanHome</home>
<remote>echo.HelloBeanRemote</remote>
<local-home>echo.HelloBeanLocalHome</local-home>
<local>echo.HelloBeanLocal</local>
<ejb-class>echo.HelloBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
</session>
</enterprise-beans>
Am Montag, 13. November 2006 07:54 schrieb Manu George:
> Hi,
> Check whether it is because of this issue
> http://issues.apache.org/jira/browse/GERONIMO-2297
>
> Thanks
> Manu
>
>
> On 11/12/06, Christoph Reich <rc...@hs-furtwangen.de> wrote:
> > Hi Willi,
> >
> > your client looks good to me. Have you checked, that you are
> > using remote and remote-home interfaces in the EJB? If you
> > are using lokal interfaces I think you get a similar error
> > message
> >
> > Cheers,
> > Chris
> >
> > On Fri, 10 Nov 2006 14:36:25 +0100, Willi Nüßer wrote
> > > Hi all,
> > >
> > > I know it must be something trivial (config ...) but I'm at a loss.
> > > Can't find anything related in the web, groups etc.
> > >
> > > The problem:
> > > running a very simple standalone HelloWorld client against
> > > a corresponding EJB app in Geronimo 1.1.1 gives
> > > the following error message:
> > >
> > > > java echo.client.SayHelloClient
> > > java.lang.ClassCastException:
> > org.openejb.client.CgLibProxy$$EnhancerByCGLIB$$28a286c9
> > > at
> > > org.openejb.client.CgLibProxy$$EnhancerByCGLIB$$eaec4f0a.create(<generated>)
> > at
...
> > PS:
> > Relevant source client code:
> >
> > private static final String PURE_JNDI_HELLOBEAN = "echo.HelloBean";
> > private static HelloBean hellobean;
> >
> > private static void getEJBReference () {
> >
> > Properties props = new Properties();
> > props.put("java.naming.factory.initial",
> > "org.openejb.client.RemoteInitialContextFactory");
> > props.put("java.naming.provider.url", "127.0.0.1:4201");
> > props.put("java.naming.security.principal", "system");
> > props.put("java.naming.security.credentials", "manager");
> >
> > try {
> > javax.naming.InitialContext initialContext =
> > new javax.naming.InitialContext(props);
> > Object objRef = initialContext.lookup(PURE_JNDI_HELLOBEAN);
> > HelloBeanHome hellobeanHome = (HelloBeanHome)
> > PortableRemoteObject.narrow(objRef, HelloBeanHome.class);
> > >> crash here
> > hellobean = hellobeanHome.create();
> > } catch (Exception ex) {
> > ex.printStackTrace();
> > }
> >
> > }
> >
> > --
Re: ClassCastException in org.openejb.client.CgLibProxy
Posted by Manu George <ma...@gmail.com>.
Hi,
Check whether it is because of this issue
http://issues.apache.org/jira/browse/GERONIMO-2297
Thanks
Manu
On 11/12/06, Christoph Reich <rc...@hs-furtwangen.de> wrote:
> Hi Willi,
>
> your client looks good to me. Have you checked, that you are
> using remote and remote-home interfaces in the EJB? If you
> are using lokal interfaces I think you get a similar error
> message
>
> Cheers,
> Chris
>
> On Fri, 10 Nov 2006 14:36:25 +0100, Willi Nüßer wrote
> > Hi all,
> >
> > I know it must be something trivial (config ...) but I'm at a loss.
> > Can't find anything related in the web, groups etc.
> >
> > The problem:
> > running a very simple standalone HelloWorld client against
> > a corresponding EJB app in Geronimo 1.1.1 gives
> > the following error message:
> >
> > > java echo.client.SayHelloClient
> > java.lang.ClassCastException:
> org.openejb.client.CgLibProxy$$EnhancerByCGLIB$$28a286c9
> > at
> > org.openejb.client.CgLibProxy$$EnhancerByCGLIB$$eaec4f0a.create(<generated>)
> at
> de.fhdw.echo.client.SayHelloClient.getEJBReference(SayHelloClient.java:43)
> at echo.client.SayHelloClient.main(SayHelloClient.java:53) Exception in
> thread "main" java.lang.NullPointerException at
> echo.client.SayHelloClient.main(SayHelloClient.java:55)
> >
> > There are no errors logged to the log file. JNDI access seems
> > to work, deployment in geronimo, too.
> >
> > So, can anyone pls give me a hint.
> >
> > TIA
> > Willi
> >
> > PS:
> > Relevant source client code:
> >
> > private static final String PURE_JNDI_HELLOBEAN = "echo.HelloBean";
> > private static HelloBean hellobean;
> >
> > private static void getEJBReference () {
> >
> > Properties props = new Properties();
> > props.put("java.naming.factory.initial",
> > "org.openejb.client.RemoteInitialContextFactory");
> > props.put("java.naming.provider.url", "127.0.0.1:4201");
> > props.put("java.naming.security.principal", "system");
> > props.put("java.naming.security.credentials", "manager");
> >
> > try {
> > javax.naming.InitialContext initialContext =
> > new javax.naming.InitialContext(props);
> > Object objRef = initialContext.lookup(PURE_JNDI_HELLOBEAN);
> > HelloBeanHome hellobeanHome = (HelloBeanHome)
> > PortableRemoteObject.narrow(objRef, HelloBeanHome.class);
> > >> crash here
> > hellobean = hellobeanHome.create();
> > } catch (Exception ex) {
> > ex.printStackTrace();
> > }
> >
> > }
> >
> > --
> > GMX DSL-Flatrate 0,- Euro* - Überall, wo DSL verfügbar ist!
> > NEU: Jetzt bis zu 16.000 kBit/s! http://www.gmx.net/de/go/dsl
>
>
>
Re: ClassCastException in org.openejb.client.CgLibProxy
Posted by Christoph Reich <rc...@hs-furtwangen.de>.
Hi Willi,
your client looks good to me. Have you checked, that you are
using remote and remote-home interfaces in the EJB? If you
are using lokal interfaces I think you get a similar error
message
Cheers,
Chris
On Fri, 10 Nov 2006 14:36:25 +0100, Willi Nüßer wrote
> Hi all,
>
> I know it must be something trivial (config ...) but I'm at a loss.
> Can't find anything related in the web, groups etc.
>
> The problem:
> running a very simple standalone HelloWorld client against
> a corresponding EJB app in Geronimo 1.1.1 gives
> the following error message:
>
> > java echo.client.SayHelloClient
> java.lang.ClassCastException:
org.openejb.client.CgLibProxy$$EnhancerByCGLIB$$28a286c9
> at
> org.openejb.client.CgLibProxy$$EnhancerByCGLIB$$eaec4f0a.create(<generated>)
at
de.fhdw.echo.client.SayHelloClient.getEJBReference(SayHelloClient.java:43)
at echo.client.SayHelloClient.main(SayHelloClient.java:53) Exception in
thread "main" java.lang.NullPointerException at
echo.client.SayHelloClient.main(SayHelloClient.java:55)
>
> There are no errors logged to the log file. JNDI access seems
> to work, deployment in geronimo, too.
>
> So, can anyone pls give me a hint.
>
> TIA
> Willi
>
> PS:
> Relevant source client code:
>
> private static final String PURE_JNDI_HELLOBEAN = "echo.HelloBean";
> private static HelloBean hellobean;
>
> private static void getEJBReference () {
>
> Properties props = new Properties();
> props.put("java.naming.factory.initial",
> "org.openejb.client.RemoteInitialContextFactory");
> props.put("java.naming.provider.url", "127.0.0.1:4201");
> props.put("java.naming.security.principal", "system");
> props.put("java.naming.security.credentials", "manager");
>
> try {
> javax.naming.InitialContext initialContext =
> new javax.naming.InitialContext(props);
> Object objRef = initialContext.lookup(PURE_JNDI_HELLOBEAN);
> HelloBeanHome hellobeanHome = (HelloBeanHome)
> PortableRemoteObject.narrow(objRef, HelloBeanHome.class);
> >> crash here
> hellobean = hellobeanHome.create();
> } catch (Exception ex) {
> ex.printStackTrace();
> }
>
> }
>
> --
> GMX DSL-Flatrate 0,- Euro* - Überall, wo DSL verfügbar ist!
> NEU: Jetzt bis zu 16.000 kBit/s! http://www.gmx.net/de/go/dsl