Problems with setRollbackOnly

[peejay]

Hi!

I use JBoss 3.2.1 and an Oracle8 database.
My application consisting of some CMP-EntityBeans and some SessionBeans.

My problem is that when i call the setRollbackOnly method from the context of a session bean, in some session beans it works as expected and in other beans it doesn't work.

e.g. in some session beans this method writes out:
rollback = false;

/**
* @ejb.interface-method
* @ejb.transaction type="Required"
*/
public void doSomething(...) throws Exception {
...
context.setRollbackOnly();
logger.debug("rollback = "+context.getRollbackOnly());
...
}

Why? Any Idea?

Thanks in advance.

peejay

[peejay]

Maybe i found the solution for this behavoir.

The doSomething method (see above) was called from
the doSomeOtherThings method within the same bean A.

/**
* @ejb.interface-method
* @ejb.transaction type="NotSupported"
*/
public void doSomeOtherThings(...) {
...
doSomething(...);
...
}

Can this cause the behavior (described above) of setRollbackOnly()?

I think so because when i call the doSomething method from another bean B the method writes out rollback = true and the rollback is executed.

Can somebody explain that to me? Is it impossible to call a method with another transaction attribut which is within the same bean instance?

When the rollback is performed a TransactionRolledbackLocalException is throw from the doSomething method of bean A and the remove method of bean A is called.

I want to call the doSomething method serveral times.
So do i have to catch the TransactionRolledbackLocalException in bean B then or is there another way?

Bean B:

**
* @ejb.interface-method
* @ejb.transaction type="NotSupported"
*/
public void callDoSomething(...) {
...
while (...)
try {
doSomething(...);
} catch (TransactionRolledbackLocalException e) {
do nothing...
}
...
}


Thanks in advance again

peejay

[peejay]

I have another problem with setRollbackOnly.

I want to perform a bank transfer. And if something goes wrong I want to send a message to a queue and i want to rollback the transaction.

I have a SLSB TransferHandler and another SLSB Sender which sends a message to a queue.

The processTransfer method of the TransferHandler:

Version 1:

/**
* @ejb.interface-method
* @ejb.transaction type="Required"
*/
public void processTransfer(...) {
try {
...doSomething...
} catch (AFailureException e) {
context.setRollbackOnly();
...
lookup Sender
...
senderLocal.sendMessageToQueue();
}
}

The sendMessageToQueue method of the Sender:

/**
* @ejb.interface-method
* @ejb.transaction type="NotSupported"
*/
public void sendMessageToQueue(...) {
...
sends a message to a queue
...
}


If i run my application and an exception occures within processTransfer method version 1 the sendMessageToQueue method of Sender isnt called and a TransactionRolledbackLocalException is thrown.
Why is the sendMessageToQueue method not called?
I thought that the transaction is rolled back at the end of the transaction what in my case is the end of the processTransfer method.

Then I changed the processTransfer method

Version 2:

/**
* @ejb.interface-method
* @ejb.transaction type="Required"
*/
public void processTransfer(...) {
try {
...doSomething...
} catch (AFailureException e) {
...
lookup Sender
...
senderLocal.sendMessageToQueue();
context.setRollbackOnly();
}
}

Now the sendMessageToQueue method is called. But the processTransfers() doesnt throw a TransactionRolledbackLocalException. Why not?
Any ideas?

Thanks

peejay