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trans-attribute in ejb-jar.xml for MDB
Joined: Sep 10, 2007
May 30, 2008 07:54:00
could anyone pls tell me the significance of
"trans-attribute" if set to:
1) "NotSupported" :
I have written MDB which has DB transaction to populate values from DB table, which attribute is suitable in this scenario.
Thanks in advance.
Joined: May 26, 2003
May 30, 2008 18:55:00
"Not supported" means the MDB won't use a transaction. "Required" means the MDB will use a transaction. "Supported" does not apply to MDBs. In a session bean, it is used to mean the caller may or may not supply a transaction.
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It is sorta covered in the
JavaRanch Style Guide
subject: trans-attribute in ejb-jar.xml for MDB
How to programmatically find if EJB is operating in transaction mode
Starting a client transaction
Configuring transcation timeouts
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