Bug 25044: Remove the need to define koha_object[s]_class for standard object class...

Bug 25044: Remove the need to define koha_object[s]_class for standard object class names

In Koha::Object[s]->prefetch_whitelist, there is a call to the koha_object[s]_class DBIC resultset class. We should not, otherwise those 2 methods will have to be defined all the time, even when we can guess it easily.

Koha::Item <> Schema::Result::Item => standard
Koha::Acquisition::Order <> Schema::Result::Aqorder => non-standard

sub _get_object_class {
    my ( $type ) = @_;
    return unless $type;

    if( $type->can('koha_object_class') ) {
        return $type->koha_object_class;
    }
    $type =~ s|Schema::Result::||;
    return ${type};
}

Test plan:
 % prove t/db_dependent/Koha/Object.t t/db_dependent/Koha/Objects.t
should return green before and after this patch

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>