I'm not sure I understand your question. A transaction rollback could happen at any time due to a transient or permenant failure.
In the same trasaction I create new user entity bean, address entity bean and user data entity bean [in the last mail -> public UserVO createNewUser(UserVO userVO, User_DataVO user_dataVO, AddressVO addressVO)]. In the same method I have to set the right user_data_id foreign key in my user entity bean [userLocal.setUser_data_id(user_dataLocal.getUser_data_id())]. But if I set a wrong id [only for testing what happens -> userLocal.setUser_data_id(new Long(20000))], which dosn't exist in the db, than this failed while:
java.sql.SQLException: General error, message from server: "Cannot add or update a child row: a foreign key constraint
I can't catch this and my servlet failed with:
HTTP ERROR: 500 Store failed; CausedByException is: General error, message from server: "Cannot add or update a child row: a foreign key constraint fails"; CausedByException is: Store failed; CausedByException is: General error, message from server: "Cannot add or update a child row: a foreign key constraint fails"
Regards, Rafal
You can analyse the cause of the exception by following the linked exceptions in EJBException.or RemoteException.
e.g. This code is used inside JBoss to discover whether an execption is thrown due to an application deadlock.
public static ApplicationDeadlockException isADE(Throwable t) { while (t!=null) { if (t instanceof ApplicationDeadlockException) { return (ApplicationDeadlockException)t; } else if (t instanceof RemoteException) { t = ((RemoteException)t).detail; } else if (t instanceof EJBException) { t = ((EJBException)t).getCausedByException(); } else { return null; } } return null; }
Regards, Adrian
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