my %dispatch = (
  1 => \&XYDFASDF::doOne,
  2 => \&XYDFASDF::doTwo,
  3 => \&XYDFASDF::doThree,
);
my $action = 2;
my $object = XYDFASDF->new();
if (exists $dispatch{$action}) {
  $dispatch{$action}->($object);
}