;;;; in Text, HTML, and XML formats. This includes hyperlinking
;;;; capability and sub-objects.
;;;;
-;;;; $Id: mop.lisp,v 1.69 2003/05/06 22:19:09 kevin Exp $
-;;;;
-;;;; This file is Copyright (c) 2000-2002 by Kevin M. Rosenberg
+;;;; $Id: mop.lisp,v 1.73 2003/05/15 06:30:19 kevin Exp $
;;;;
+;;;; This file is Copyright (c) 2000-2003 by Kevin M. Rosenberg
;;;; *************************************************************************
(in-package :hyperobject)
(user-name :initarg :user-name :type string :initform nil
:accessor user-name
:documentation "User name for class")
+ (user-name-plural :initarg :user-name-plural :type string :initform nil
+ :accessor user-name-plural
+ :documentation "Plural user name for class")
(default-print-slots :initarg :default-print-slots :type list :initform nil
:accessor default-print-slots
:documentation "Defaults slots for a view")
:hyperlink-parameters (slot-value dsd 'hyperlink-parameters)
:description (slot-value dsd 'description)
:user-name (slot-value dsd 'user-name)
+ :user-name-plural (slot-value dsd 'user-name-plural)
:index (slot-value dsd 'index)
:value-constraint (slot-value dsd 'value-constraint)
:null-allowed (slot-value dsd 'null-allowed)
(setf (slot-value esd 'length) length)
(setf (slot-value esd 'type) (value-type-to-lisp-type value-type))
(setf (slot-value esd 'value-type) value-type)
- (dolist (name '(print-formatter subobject hyperlink hyperlink-parameters description user-name
- value-constraint index null-allowed))
+ (dolist (name '(print-formatter subobject hyperlink hyperlink-parameters
+ description value-constraint index null-allowed user-name))
(setf (slot-value esd name) (slot-value dsd name)))
esd)))
':function (compile nil method-lambda)
init-args-values)))))
+#+(or allegro scl)
+(progn
+ ;; One entry for each class with lazy readers defined. The value is a plist mapping
+ ;; slot-name to a lazy reader, each of which is a list of a function and slot-names.
+ (defvar *lazy-readers* (make-hash-table))
+
+(defmethod slot-unbound :around ((class hyperobject-class) instance slot-name)
+ (let ((lazy-reader (loop for super in (class-precedence-list class)
+ as lazy-reader = (getf (gethash super *lazy-readers*) slot-name)
+ when lazy-reader return it)))
+ (if lazy-reader
+ (setf (slot-value instance slot-name)
+ (apply (car lazy-reader)
+ (loop for arg-slot-name in (cdr lazy-reader)
+ collect (slot-value instance arg-slot-name))))
+ ;; No lazy reader -- defer to regular slot-unbound handling.
+ (call-next-method))))
+
+ ;; The reader is a function and the reader-keys are slot names. The slot is lazily set to
+ ;; the result of applying the function to the slot-values of those slots, and that value
+ ;; is also returned.
+ (defun ensure-lazy-reader (class-name slot-name reader &rest reader-keys)
+ (setf (getf (gethash (find-class class-name) *lazy-readers*) slot-name)
+ (list* reader (copy-list reader-keys))))
+
+ (defun remove-lazy-reader (class-name slot-name)
+ (setf (getf (gethash (find-class class-name) *lazy-readers*) slot-name)
+ nil))
+
+ ) ;; #+(or allegro scl)
+
+
(defun finalize-subobjects (cl)
"Process class subobjects slot"
(setf (subobjects cl)
nil
(cdr subobj-def)))))
(unless (eq (lookup subobject) t)
- #-(or sbcl cmu lispworks)
+ #+ignore ;; #-(or sbcl cmu lispworks)
(eval
`(hyperobject::def-lazy-reader ,(name-class subobject)
,(name-slot subobject) ,(lookup subobject)
,@(lookup-keys subobject)))
- #+(or sbcl cmu lispworks)
+ #+(or sbcl cmu lispworks allegro scl)
(apply #'ensure-lazy-reader
(name-class subobject) (name-slot subobject)
(lookup subobject) (lookup-keys subobject)))
#-(or cmu sbcl) (nreverse subobjects)
)))
+
+(defun finalize-class-slots (cl)
+ "Make sure all class slots have an expected value"
+ (unless (user-name cl)
+ (setf (user-name cl) (format nil "~:(~A~)" (class-name cl))))
+
+ (setf (user-name-plural cl)
+ (if (and (consp (user-name cl)) (cadr (user-name cl)))
+ (cadr (user-name cl))
+ (format nil "~A~P" (if (consp (user-name cl))
+ (car (user-name cl))
+ (user-name cl))
+ 2)))
+
+ (dolist (name '(user-name description))
+ (awhen (slot-value cl name)
+ (setf (slot-value cl name)
+ (etypecase (slot-value cl name)
+ (cons (car it))
+ ((or string symbol) it))))))
+
(defun finalize-documentation (cl)
"Calculate class documentation slot"
- (awhen (slot-value cl 'user-name)
- (setf (slot-value cl 'user-name)
- (etypecase (slot-value cl 'user-name)
- (cons (car it))
- ((or string symbol) it))))
- (awhen (slot-value cl 'description)
- (setf (slot-value cl 'description)
- (etypecase (slot-value cl 'description)
- (cons (car it))
- ((or string symbol) it))))
-
(let ((*print-circle* nil))
(setf (documentation (class-name cl) 'class)
(format nil "Hyperobject~A~A~A~A"
(finalize-hyperlinks cl)
(finalize-sql cl)
(finalize-rules cl)
+ (finalize-class-slots cl)
(finalize-documentation cl))
(find name (class-slots cl) :key #'slot-definition-name))
(defun hyperobject-class-user-name (obj)
- (awhen (user-name (class-of obj))
- (if (consp it)
- (car it)
- it)))
+ (user-name (class-of obj)))
+
+(defun hyperobject-class-user-name-plural (obj)
+ (user-name-plural (class-of obj)))
(defun hyperobject-class-subobjects (obj)
(subobjects (class-of obj)))
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