Author: lgiessmann Date: Wed Mar 10 11:59:11 2010 New Revision: 223 Log: new-datamodel: added a sample file that handles "call-next-method" and the auxiliary methods (":before", "after" and "around") Added: branches/new-datamodel/playground/call-next-method.lisp Added: branches/new-datamodel/playground/call-next-method.lisp ============================================================================== --- (empty file) +++ branches/new-datamodel/playground/call-next-method.lisp Wed Mar 10 11:59:11 2010 @@ -0,0 +1,44 @@ +(defclass Class-1 () + ((value :initarg :value + :accessor value))) + +(defmethod set-value :before ((inst Class-1) value) + (format t ":before -> value is of type ~a~%" (type-of value))) + +(defmethod set-value ((inst Class-1) value) + (format t ": -> value is being set to ~a~%" value) + (setf (slot-value inst 'value) value)) + +(defmethod set-value :after ((inst Class-1) value) + (format t ":after -> value was set to ~a~%" value)) + +(defmethod set-value :around ((inst Class-1) value) + (format t ":around -> ???~%") + (call-next-method inst "123")) ;calls the :before method with the + ;arguments inst and "123" + ;if no arguments are passed the arguments + ;of the :around method are passed + +(defvar *inst* (make-instance 'Class-1)) +(set-value *inst* "val") +;:around -> ??? +;:before -> value is of type (SIMPLE-ARRAY CHARACTER (3)) +;: -> value is being set to 123 +;:after -> value was set to 123 + + +(defclass Class-2 (Class-1) + ()) + +(defmethod set-value ((inst Class-2) value) + (call-next-method) ;calls set-value of Class-1 + (format t "(Class-2): -> value is being set to ~a~%" value) + (setf (slot-value inst 'value) value)) + +(defvar *inst2* (make-instance 'Class-2)) +(set-value *inst2* "val2") +;:around -> ??? +;:before -> value is of type (SIMPLE-ARRAY CHARACTER (3)) +;: -> value is being set to 123 +;(Class-2): -> value is being set to 123 +;:after -> value was set to 123 \ No newline at end of file