Introduce define-dao-class macro?

[kilianmh]

For a project I defined a convenience macro define-dao-class because we basically always want to define the :col-type slot and don't want to forget the metaclass. I was thinking it might be a nice addition.

1. The second slot is used as value for :col-type if its not a keyword.
2. Automatically add the slot (:metaclass dao-class)

(eval-when (:compile-toplevel :load-toplevel :execute)
  (defun expand-slot (rest)
    (let ((second
        (second rest)))
      (if (keywordp second)
      `(,(first rest)
        ,@(cdr rest))
      `(,(first rest)
        :col-type ,second
        ,@(cddr rest))))))

(defmacro define-dao-class (name direct-superclasses direct-slots &rest options)
  `(defclass ,name ,direct-superclasses
     (,@(mapcar #'expand-slot direct-slots))
     ,@(append options
    '((:metaclass dao-class)))))

What do you think?

[sabracrolleton]

I will consider it if you think about appropriate tests.

[sabracrolleton]

I probably will not get to it until late next week.