(:metaclass standard-db-class)
(:documentation "Superclass for all CLSQL View Classes."))
-(defvar *update-records-on-make-instance* nil
- "When T, UPDATE-RECORDS-FROM-INSTANCE will be automatically called
-when a new instance of a view-class is created.")
+(defvar *db-auto-sync* nil
+ "A non-nil value means that creating View Class instances or
+ setting their slots automatically creates/updates the
+ corresponding records in the underlying database.")
(defvar *db-deserializing* nil)
(defvar *db-initializing* nil)
(setf (slot-value instance slot-name) nil))))))
(call-next-method))
-#+ignore ;; not currently used
(defmethod (setf slot-value-using-class) (new-value (class standard-db-class)
- instance slot)
- (declare (ignore new-value instance slot))
- (call-next-method))
+ instance slot-def)
+ (declare (ignore new-value))
+ (let ((slot-name (%svuc-slot-name slot-def))
+ (slot-kind (view-class-slot-db-kind slot-def)))
+ (call-next-method)
+ (when (and *db-auto-sync*
+ (not *db-initializing*)
+ (not *db-deserializing*)
+ (not (eql slot-kind :virtual)))
+ (update-record-from-slot instance slot-name))))
(defmethod initialize-instance ((object standard-db-object)
&rest all-keys &key &allow-other-keys)
(declare (ignore all-keys))
(let ((*db-initializing* t))
(call-next-method)
- (when (and *update-records-on-make-instance*
+ (when (and *db-auto-sync*
(not *db-deserializing*))
- #+nil (created-object object)
(update-records-from-instance object))))
;;
;; Called by 'get-slot-values-from-view'
;;
-(declaim (inline delistify))
-(defun delistify (list)
- (if (listp list)
- (car list)
- list))
(defvar *update-context* nil)
;; ------------------------------------------------------------
;; Logic for 'faulting in' :join slots
-(defun fault-join-slot-raw (class object slot-def)
- (let* ((dbi (view-class-slot-db-info slot-def))
- (jc (gethash :join-class dbi)))
- (let ((jq (join-qualifier class object slot-def)))
- (when jq
- (select jc :where jq :flatp t :result-types nil)))))
-
;; this works, but is inefficient requiring (+ 1 n-rows)
;; SQL queries
#+ignore
(let* ((dbi (view-class-slot-db-info slot-def))
(ts (gethash :target-slot dbi))
(jc (gethash :join-class dbi))
+ (ts-view-table (view-table (find-class ts)))
+ (jc-view-table (view-table (find-class jc)))
(tdbi (view-class-slot-db-info
(find ts (class-slots (find-class jc))
:key #'slot-definition-name)))
+ (retrieval (gethash :retrieval tdbi))
(jq (join-qualifier class object slot-def))
(key (slot-value object (gethash :home-key dbi))))
(when jq
- (let ((res
- (find-all (list ts)
- :inner-join (sql-expression :attribute jc)
- :on (sql-operation
- '==
- (sql-expression :attribute (gethash :foreign-key tdbi) :table ts)
- (sql-expression :attribute (gethash :home-key tdbi) :table jc))
- :where jq
- :result-types :auto)))
- (mapcar #'(lambda (i)
- (let* ((instance (car i))
- (jcc (make-instance jc :view-database (view-database instance))))
- (setf (slot-value jcc (gethash :foreign-key dbi))
- key)
- (setf (slot-value jcc (gethash :home-key tdbi))
- (slot-value instance (gethash :foreign-key tdbi)))
+ (ecase retrieval
+ (:immediate
+ (let ((res
+ (find-all (list ts)
+ :inner-join (sql-expression :table jc-view-table)
+ :on (sql-operation
+ '==
+ (sql-expression
+ :attribute (gethash :foreign-key tdbi)
+ :table ts-view-table)
+ (sql-expression
+ :attribute (gethash :home-key tdbi)
+ :table jc-view-table))
+ :where jq
+ :result-types :auto)))
+ (mapcar #'(lambda (i)
+ (let* ((instance (car i))
+ (jcc (make-instance jc :view-database (view-database instance))))
+ (setf (slot-value jcc (gethash :foreign-key dbi))
+ key)
+ (setf (slot-value jcc (gethash :home-key tdbi))
+ (slot-value instance (gethash :foreign-key tdbi)))
(list instance jcc)))
- res)))))
+ res)))
+ (:deferred
+ ;; just fill in minimal slots
+ (mapcar
+ #'(lambda (k)
+ (let ((instance (make-instance ts :view-database (view-database object)))
+ (jcc (make-instance jc :view-database (view-database object)))
+ (fk (car k)))
+ (setf (slot-value instance (gethash :home-key tdbi)) fk)
+ (setf (slot-value jcc (gethash :foreign-key dbi))
+ key)
+ (setf (slot-value jcc (gethash :home-key tdbi))
+ fk)
+ (list instance jcc)))
+ (select (sql-expression :attribute (gethash :foreign-key tdbi) :table jc-view-table)
+ :from (sql-expression :table jc-view-table)
+ :where jq)))))))
+
+(defun update-object-joins (objects &key (slots t) (force-p t)
+ class-name (max-len *default-update-objects-max-len*))
+ "Updates the remote join slots, that is those slots defined without :retrieval :immediate."
+ (when objects
+ (unless class-name
+ (class-name (class-of (first objects))))
+ )
+ )
+
+
+(defun fault-join-slot-raw (class object slot-def)
+ (let* ((dbi (view-class-slot-db-info slot-def))
+ (jc (gethash :join-class dbi)))
+ (let ((jq (join-qualifier class object slot-def)))
+ (when jq
+ (select jc :where jq :flatp t :result-types nil)))))
(defun fault-join-slot (class object slot-def)
(let* ((dbi (view-class-slot-db-info slot-def))
(let* ((class-name (class-name vclass))
(db-vals (butlast vals (- (list-length vals)
(list-length selects))))
- (*db-initializing* t)
(obj (make-instance class-name :view-database database)))
;; use refresh keyword here
(setf obj (get-slot-values-from-view obj (mapcar #'car selects)
(car objects)
objects))))
(let* ((*db-deserializing* t)
- (*default-database* (or database
- (error 'clsql-base::clsql-no-database-error :database nil)))
(sclasses (mapcar #'find-class view-classes))
(sels (mapcar #'generate-selection-list sclasses))
(fullsels (apply #'append sels))
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