On Feb 16, 2006, at 9:30 AM, Claudio Corsi wrote:
David Jencks wrote:
On Feb 16, 2006, at 8:42 AM, Claudio Corsi wrote:
Hi all,
I was wondering if you have a standard process to get an
instance of Geronimo TransactionManager instance?
I have been trying to understand your use of the gbean package
and it is not readily clear how I can get an instance of the
TransactionManager and/or TransactionContextManager instance.
Knowing what kind of component needs the TM or TCM would be a
help. One way for a non-geronimo-aware component to use the TCM
is demonstrated in the spring tm in the spring module in trunk.
Hi Dave,
Thanks for the reply.
The problem is that I will not know a priori which component is
using the TM/TCM.
Let me describe our product. We have a product called ObjectStore
JMTL. This product has the ability to implicitly enlist itself as
an XAResource with any jta aware app. The way that we implement
this feature is by getting a reference to a TM and using this
instance to get the current TXN to enlist ourselves. This work is
jta implementation specific since there is no standard way to
access a TM.
Our reason for implementing this was so that our users do not need
to explicitly enlist themselves.
I've looked at the STM implementation and it still requires a TCM
name. The question is if this name is unique per application server
instance? If it is, how can I get a reference to that unique name?
If it is not, how can I determine which one is currently be used?
We need a easier way for non-geronimo stuff to access our components :-)
You should be able to get the TCM name using a GBeanQuery like this:
List names = kernel.listGBeans(new GBeanQuery(null,
TransactionContextManager.class.getName()));
This ought to have only one name in it. I should change the STM to
use this.
In order to participate in recovery, your XAResource has to actually
implement NamedXAResource and supply a name that will be the same
each time your component instance starts.
Usually to start a service in geronimo it is easiest to wrap it in a
gbean. If you do this you can more easily get the TCM by simply
having a gbean reference to it.
thanks
david jencks
thanks,
--Claudio
thanks
david jencks
thanks,
--Claudio
