Exception thrown on an optimistic locking violation.
This exception will be thrown either by O/R mapping tools
or by custom DAO implementations. Optimistic locking failure
is typically not detected by the database itself.
author: Rod Johnson See Also:PessimisticLockingFailureException
Constructor for OptimisticLockingFailureException.
Parameters: msg - the detail message Parameters: cause - the root cause from the data access API in use