;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
-;;;; ======================================================================
-;;;; File: metaclasses.lisp
-;;;; Updated: <04/04/2004 12:08:11 marcusp>
-;;;; ======================================================================
+;;;; *************************************************************************
;;;;
-;;;; Description ==========================================================
-;;;; ======================================================================
+;;;; $Id$
;;;;
-;;;; CLSQL-USQL metaclass for standard-db-objects created in the OODDL.
+;;;; CLSQL metaclass for standard-db-objects created in the OODDL.
;;;;
-;;;; ======================================================================
-
+;;;; This file is part of CLSQL.
+;;;;
+;;;; CLSQL users are granted the rights to distribute and use this software
+;;;; as governed by the terms of the Lisp Lesser GNU Public License
+;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
+;;;; *************************************************************************
-(in-package #:clsql-usql-sys)
+(in-package #:clsql-sys)
(eval-when (:compile-toplevel :load-toplevel :execute)
(when (>= (length (generic-function-lambda-list
:accessor object-definition
:initarg :definition
:initform nil)
- (version
- :accessor object-version
- :initarg :version
- :initform 0)
(key-slots
:accessor key-slots
:initform nil)
result))
#+lispworks
-(defconstant +extra-class-options+ '(:base-table :version :schemas))
+(defconstant +extra-class-options+ '(:base-table))
#+lispworks
(defmethod clos::canonicalize-class-options :around
(defmethod initialize-instance :around ((class standard-db-class)
&rest all-keys
&key direct-superclasses base-table
- schemas version qualifier
+ qualifier
&allow-other-keys)
(let ((root-class (find-class 'standard-db-object nil))
(vmc (find-class 'standard-db-class)))
(car base-table)
base-table))
(class-name class)))))
- (setf (object-version class) version)
- (mapc (lambda (schema)
- (pushnew (class-name class) (gethash schema *object-schemas*)))
- (if (listp schemas) schemas (list schemas)))
(register-metaclass class (nth (1+ (position :direct-slots all-keys))
all-keys))))
(defmethod reinitialize-instance :around ((class standard-db-class)
&rest all-keys
- &key base-table schemas version
+ &key base-table
direct-superclasses qualifier
&allow-other-keys)
(let ((root-class (find-class 'standard-db-object nil))
direct-superclasses)
(remove-keyword-arg all-keys :direct-superclasses)))
(call-next-method)))
- (setf (object-version class) version)
- (mapc (lambda (schema)
- (pushnew (class-name class) (gethash schema *object-schemas*)))
- (if (listp schemas) schemas (list schemas)))
(register-metaclass class (nth (1+ (position :direct-slots all-keys))
all-keys)))
(slot-value slot 'db-kind)
(and (slot-boundp slot 'column)
(slot-value slot 'column))))))
- (let ((all-slots (mapcar #'frob-slot (class-slots class))))
+ (let ((all-slots (mapcar #'frob-slot (ordered-class-slots class))))
(setq all-slots (remove-if #'not-db-col all-slots))
(setq all-slots (stable-sort all-slots #'string< :key #'car))
;;(mapcar #'dink-type all-slots)
(setf (key-slots class) (remove-if-not (lambda (slot)
(eql (slot-value slot 'db-kind)
:key))
- (class-slots class)))))
+ (ordered-class-slots class)))))
#+(or allegro openmcl)
(defmethod finalize-inheritance :after ((class standard-db-class))
+ ;; KMRL for slots without a type set, openmcl sets type-predicate to ccl:false
+ ;; for standard-db-class
+ #+openmcl
+ (mapcar
+ #'(lambda (s)
+ (if (eq 'ccl:false (slot-value s 'ccl::type-predicate))
+ (setf (slot-value s 'ccl::type-predicate) 'ccl:true)))
+ (class-slots class))
+
(setf (key-slots class) (remove-if-not (lambda (slot)
(eql (slot-value slot 'db-kind)
:key))
- (class-slots class))))
+ (ordered-class-slots class))))
;; return the deepest view-class ancestor for a given view class
(db-info
:accessor view-class-slot-db-info
:initarg :db-info
- :documentation "Description of the join.")))
+ :documentation "Description of the join.")
+ (specified-type
+ :accessor specified-type
+ :initform nil
+ :documentation "KMR: Internal slot storing the :type specified by user.")))
(defparameter *db-info-lambda-list*
'(&key join-class
(declare (ignore initargs))
(find-class 'view-class-effective-slot-definition))
+#+openmcl
+(defun compute-class-precedence-list (class)
+ ;; safe to call this in openmcl
+ (class-precedence-list class))
+
+#-(or sbcl cmu)
+(defmethod compute-slots ((class standard-db-class))
+ "Need to sort order of class slots so they are the same across
+implementations."
+ (let ((slots (call-next-method))
+ desired-sequence
+ output-slots)
+ (dolist (c (compute-class-precedence-list class))
+ (dolist (s (class-direct-slots c))
+ (let ((name (slot-definition-name s)))
+ (unless (find name desired-sequence)
+ (push name desired-sequence)))))
+ (dolist (desired desired-sequence)
+ (let ((slot (find desired slots :key #'slot-definition-name)))
+ (assert slot)
+ (push slot output-slots)))
+ output-slots))
+
+(defun compute-lisp-type-from-slot-specification (slotd specified-type)
+ "Computes the Lisp type for a user-specified type. Needed for OpenMCL
+which does type checking before storing a value in a slot."
+ #-openmcl (declare (ignore slotd))
+ ;; This function is called after the base compute-effective-slots is called.
+ ;; OpenMCL sets the type-predicate based on the initial value of the slots type.
+ ;; so we have to override the type-predicates here
+ (cond
+ ((consp specified-type)
+ (cond
+ ((and (symbolp (car specified-type))
+ (string-equal (symbol-name (car specified-type)) "string"))
+ #+openmcl (setf (slot-value slotd 'ccl::type-predicate) 'stringp)
+ 'string)
+ (t
+ #+openmcl (setf (slot-value slotd 'ccl::type-predicate) 'ccl:true)
+ specified-type)))
+ #+openmcl
+ ((null specified-type)
+ ;; setting this here is not enough since openmcl later sets the
+ ;; type-predicate to ccl:false. So, have to check slots again
+ ;; in finalize-inheritance
+ #+openmcl (setf (slot-value slotd 'ccl::type-predicate) 'ccl:true)
+ t)
+ (t
+ ;; This can be improved for OpenMCL to set a more specific type
+ ;; predicate based on the value specified-type
+ #+openmcl (setf (slot-value slotd 'ccl::type-predicate) 'ccl:true)
+ specified-type)))
+
;; Compute the slot definition for slots in a view-class. Figures out
;; what kind of database value (if any) is stored there, generates and
;; verifies the column name.
#+kmr-normal-cesd slot-name
direct-slots)
#+kmr-normal-cesd (declare (ignore slot-name))
+
(let ((slotd (call-next-method))
(sd (car direct-slots)))
(when (slot-boundp sd 'db-type)
(view-class-slot-db-type sd)))
-
(setf (slot-value slotd 'nulls-ok)
(view-class-slot-nulls-ok sd))
(when (slot-boundp sd 'db-constraints)
(view-class-slot-db-constraints sd)))
-
;; I wonder if this slot option and the previous could be merged,
;; so that :base and :key remain keyword options, but :db-kind
;; :join becomes :db-kind (:join <db info .... >)?
(when (slot-boundp sd 'db-info)
(if (listp (view-class-slot-db-info sd))
(parse-db-info (view-class-slot-db-info sd))
- (view-class-slot-db-info sd)))))
+ (view-class-slot-db-info sd))))
+
+ ;; KMR: store the user-specified type and then compute
+ ;; real Lisp type and store it
+ (setf (specified-type slotd)
+ (slot-definition-type slotd))
+ (setf (slot-value slotd 'type)
+ (compute-lisp-type-from-slot-specification
+ slotd (slot-definition-type slotd)))
+ )
;; all other slots
(t
(change-class slotd 'view-class-effective-slot-definition
projects / clsql.git / blobdiff