Part of my application's requirements involve me saving the transaction id of some operations. I am using a CMT StatelessSessionBean. I thought that I could get the id via entityManager.getTransaction(), but that yields the following IllegalStateException. Is there another way to get to this information without switching to user managed transactions?

java.lang.IllegalStateException: Illegal to call this method from injected, managed EntityManager
 at org.jboss.ejb3.entity.TransactionScopedEntityManager.getTransaction(TransactionScopedEntityManager.java:226)
 at com.noverant.service.audit.StatelessAuditService.addEntry(StatelessAuditService.java:69)
 at sun.reflect.GeneratedMethodAccessor183.invoke(Unknown Source)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
...

package com.noverant.service.audit;

import ...

@Stateless (name="AuditService")
public class StatelessAuditService implements AuditService
{
 protected EntityManager entityManager = null;
 protected SessionContext sessionContext = null;

 @PersistenceContext(unitName = "nets-system")
 public void setEntityManager(EntityManager entityManager)
 {
 this.entityManager = entityManager;
 }

 @Resource
 public void setSessionContext(SessionContext sessionContext)
 {
 this.sessionContext = sessionContext;
 }

 public void addEntry(AuditEntry ae)
 {
 String transactionId = entityManager.getTransaction().toString();
 }

}