KernelRegistry does not return a reference to Kernel

[Siraj Mohamed <Si...@virtusa.com>]

Hi All,
 
I am using WASCE 1.0.0.1 version and I am trying to get a reference to
the TransactionManger from a Java class. This is the segment of my java
class.
 
TransactionManager tm = null;
try
{
            ObjectName TM_NAME = new
 
ObjectName("geronimo.server:J2EEApplication=null,J2EEModule=geronimo/j2e
e-server/1.0/car,J2EEServer=geronimo,j2eeType=TransactionManager,name=Tr
ansactionManager");
                                               
                                               
            Kernel kernel = KernelRegistry.getSingleKernel();
            tm =
(TransactionManager)kernel.getProxyManager().createProxy(TM_NAME,
            TransactionManager.class);
 
}catch (Exception e)
{
            throw new
TransactionManagerFactoryException(e.getMessage());
}
 
This code does not work for me and I get a null return value when trying
to get the Kernel (KernelRegistry.getSingleKernel()).
 
Am I missing some thing else? My WASCE application server is running up
and down.
 
Please help me if any one knows the solution.
 
Thanks and Regards,
Siraj

Re: KernelRegistry does not return a reference to Kernel

[Aaron Mulder <am...@alumni.princeton.edu>]

If you're working on application code, is there a reason you're trying
to use a TransactionManager instead of getting a UserTransaction from
JNDI?  If you're writing a GBean you should have the
TransactionManager injected (configured as a reference) instead of
looking it up.

In any case, it would generally help if you post the stack trace and
double-check to be absolutely sure that it's definitely the
getSingleKernel method that's returning null and not some surrounding
code.  In this particular case I'm not sure how much a stack trace
will help since I'm not sure what SVN revision of Geronimo the WASCE
code is based on and what IBM might have changed, but it's certainly
the case that you don't have much of a chance of a better diagnosis
*without* the stack trace.  :)

Thanks,
    Aaron

On 3/20/06, Siraj Mohamed <Si...@virtusa.com> wrote:
>
>
>
> Hi All,
>
>
>
> I am using WASCE 1.0.0.1 version and I am trying to get a reference to the
> TransactionManger from a Java class. This is the segment of my java class.
>
>
>
> TransactionManager tm = null;
>
> try
>
> {
>
>             ObjectName TM_NAME = new
>
>
> ObjectName("geronimo.server:J2EEApplication=null,J2EEModule=geronimo/j2ee-server/1.0/car,J2EEServer=geronimo,j2eeType=TransactionManager,name=TransactionManager");
>
>
>
>
>
>             Kernel kernel = KernelRegistry.getSingleKernel();
>
>             tm =
> (TransactionManager)kernel.getProxyManager().createProxy(TM_NAME,
>
>             TransactionManager.class);
>
>
>
> }catch (Exception e)
>
> {
>
>             throw new
> TransactionManagerFactoryException(e.getMessage());
>
> }
>
>
>
> This code does not work for me and I get a null return value when trying to
> get the Kernel (KernelRegistry.getSingleKernel()).
>
>
>
> Am I missing some thing else? My WASCE application server is running up and
> down.
>
>
>
> Please help me if any one knows the solution.
>
>
>
> Thanks and Regards,
>
> Siraj