Basic understanding of JCA-Workflow

[leolo]

Hi!

I've a JBoss AS 4.2.3 with a very basic SessionBean in it (code below), accessing a Jackrabbit-Repository, that is connected via a JCA-ConnectionFactory.

Assuming the bean is deployed and the service-method deleteNode(...) is executed once. At which point is a connection to jackrabbit taken out of the pool?

When the resource "java:jcr/local" is injected at bean-deployment?

Or when repository.login(...) in the service-method is called?

When is the connection released and returned to the pool? (When session-logout is called or when the transaction is committed or ... ?)

Is it possible, that during a service-method more than one connection may be used?

Any hints and references are really appreciated.

Regards, LeoLo

@Stateless
@Remote(SimpleService.class)
@TransactionAttribute(TransactionAttributeType.REQUIRED)
public class SimpleServiceBean implements SimpleService {

 // JackRabbit-Repository
 @Resource(mappedName = "java:jcr/local")
 private Repository repository;

 public void deleteNode (String path) {

 Session session = null;
 String pathLocal = null;
 Node oldNode = null;

 try {
 // JackRabbit access via JNDI
 session = this.repository.login(new SimpleCredentials("user", "pass".toCharArray()), "default");

 Node rootNode = session.getRootNode();

 oldNode = rootNode.getNode(pathLocal);
 oldNode.remove();
 session.save();
 }
 catch (RepositoryException re) {
 log.error(re.getMessage(), re);
 }
 finally {
 session.logout();
 }
 }

[vickyk]

"LeoLo" wrote:

Or when repository.login(...) in the service-method is called?

The connection should be taken when login() is called, you can verify this by looking at the implementation.

"LeoLo" wrote:

When is the connection released and returned to the pool? (When session-logout is called or when the transaction is committed or ... ?)

It should be when session.logou() is called, I would recommend to check the RA implementation from JackRabbit.

"LeoLo" wrote:

Is it possible, that during a service-method more than one connection may be used?

Any hints and references are really appreciated.

I can't make out from the methods calls that multiple connections are being used in the application flow.
You can also look at the ManagedConnectionPool MBean from the jmx-console to see the evolution of the connections in the pool.