is CMP + Session Facade w/ BMT allowed?

[Aaron Anders]

according to the sequence diagram on Applying Enterprise JavaBeans, 2nd ed. page 213

"After invoking methods on an entity bean, the client attempts to commit the transaction by invoking the commit method on the UserTransaction interface" (which operates on a CMP)

i think it implies that CMP + Session Facade w/ BMT is allowed, so i've done an little experiment...

Session Facade's <transaction-type> = Bean

code listing simplified as below:

UserTransaction ut = ctx.getUserTransaction();
InitialContext initCtx = new InitialContext();
Context myEnv = (Context)initCtx.lookup("java:comp/env");
CMPLocalHome home = (CMPLocalHome) myEnv.lookup("ejb/SomeEJB");
CMPLocal proxy = home.findByPrimaryKey("1");
System.out.println("$" + proxy.getBalance()); // shows $10  
proxy.setBalance(20);
ut.rollback(); // exception

with JBoss 3.2.3, execution results in "java.lang.IllegalStateException: No transaction." on the ut.rollback() line, and the balance field becomes $20

is there anything wrong with the code?
[ August 08, 2004: Message edited by: Aaron Anders ]

[alzamabar]

Originally posted by Aaron Anders:
according to the sequence diagram on Applying Enterprise JavaBeans, 2nd ed. page 213

UserTransaction ut = ctx.getUserTransaction();
InitialContext initCtx = new InitialContext();
Context myEnv = (Context)initCtx.lookup("java:comp/env");
CMPLocalHome home = (CMPLocalHome) myEnv.lookup("ejb/SomeEJB");
CMPLocal proxy = home.findByPrimaryKey("1");
System.out.println("$" + proxy.getBalance()); // shows $10  
proxy.setBalance(20);
ut.rollback(); // exception

with JBoss 3.2.3, execution results in "java.lang.IllegalStateException: No transaction." on the ut.rollback() line, and the balance field becomes $20

is there anything wrong with the code?

[ August 08, 2004: Message edited by: Aaron Anders ]

I can't see the beginning of the transaction (i.e. ut.begin() )

[Aaron Anders]

Originally posted by Marco Tedone:

I can't see the beginning of the transaction (i.e. ut.begin() )

UHHHHH! i forget to call ut.begin()!!!

the code works well on JBoss 3.2.3.

thanks for your reminding!