ADD-TRANSACTION-ROLLBACK-HOOK — Specify hooks to be run when rolling back changes.Function
rollback-hookA designator for a function with no required arguments.
databaseA database object. This will default to the value of *default-database*.
resultThe list of currently defined rollback hooks for
database.
Adds rollback-hook, which should a
designator for a function with no required arguments, to the
list of hooks run when rollback is called
on database which defaults to
*default-database*.
(start-transaction)
=> NIL
(add-transaction-rollback-hook #'(lambda () (print "Successfully rolled back.")))
=> (#<Interpreted Function (LAMBDA # #) {48E37C31}>)
(rollback)
"Successfully rolled back."
=> NIL