X-Git-Url: https://git.hcoop.net/clinton/lisp-on-lines.git/blobdiff_plain/835ac88dcdbdb3389dd922748d31546875b1599a..bf5ae490a343a8dd3c8abfddc8766df9c4af6f76:/src/meta-model.lisp

diff --git a/src/meta-model.lisp b/src/meta-model.lisp
index 2fbe4b5..aabd2ff 100644
--- a/src/meta-model.lisp
+++ b/src/meta-model.lisp
@@ -22,6 +22,9 @@
 (defmethod meta-model.metadata ((self (eql nil)))
   nil)
 
+(defmethod meta-model.metadata ((self symbol))
+  (meta-model.metadata (make-instance self)))
+
 (defun gen-supers (supers)
   (let (subclassp)
     (dolist (x supers)
@@ -212,14 +215,18 @@ most of the below functions expect this method to exist"
 (defgeneric select-instances (instance &rest args)
   (:documentation "Select instances in backend dependent way"))
 
+(defgeneric prepare-slot-name-for-select (instance slot-name)
+  (:method (i s) s))
+
 (defmacro def-compare-expr (instance-type name expr &key value-format)
   `(defmethod ,name ((instance ,instance-type) slot-name value)
      (declare (ignore instance))
-     (,expr slot-name ,(typecase value-format
+     (,expr (prepare-slot-name-for-select instance slot-name) ,(typecase value-format
                                  (null 'value)
                                  (string `(format nil ,value-format value))
                                  (t `(,value-format value))))))
 
+
 (defmacro def-logical-expr (instance-type name expr)
   `(defmethod ,name ((instance ,instance-type) &rest args)
      (declare (ignore instance))