What is ResourceManager in this example ?

[vickyk]

While going through the http://wiki.jboss.org/wiki/Wiki.jsp?page=JBossTSRecovery

I found the following code snippet
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UserTransaction ut = com.arjuna.ats.jta.UserTransaction.userTransaction();

ut.begin();

Transaction txImple = TransactionManager.transactionManager().getTransaction();

txImple.enlistResource(new ExampleXAResource());
txImple.enlistResource(new ExampleXAResource());

ut.commit();
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What I wanted to know is what is the ResourceManager here , is it ExampleXAResource() ?
Can I always call the XAResource implementing class as the ResourceManger or it sometimes acts as a proxy to the real RM as in case of the Database , where I feel the db driver contains the actual implementation of RM

Regards
Vicky

[marklittle]

This is a fairly simple example and in this case, it's just the ExampleXAResource.