sels
(error "No slots of type :base in view-class ~A" (class-name vclass)))))
-(defun generate-immediate-joins-list (vclass)
- "Returns list of pairs of join slots and their class for a class."
- (let ((sels nil))
- (dolist (slotdef (ordered-class-slots vclass))
+
+
+(defun generate-retrieval-joins-list (vclass retrieval-method)
+ "Returns list of immediate join slots for a class."
+ (let ((join-slotdefs nil))
+ (dolist (slotdef (ordered-class-slots vclass) join-slotdefs)
(when (and (eq :join (view-class-slot-db-kind slotdef))
- (eq :immediate (gethash :retrieval (view-class-slot-db-info slotdef))))
- (push slotdef sels)))
- (cons vclass (list sels))))
+ (eq retrieval-method (gethash :retrieval (view-class-slot-db-info slotdef))))
+ (push slotdef join-slotdefs)))))
+
+(defun generate-immediate-joins-selection-list (vclass)
+ "Returns list of immediate join slots for a class."
+ (let (sels)
+ (dolist (joined-slot (generate-retrieval-joins-list vclass :immediate) sels)
+ (let* ((join-class-name (gethash :join-class (view-class-slot-db-info joined-slot)))
+ (join-class (when join-class-name (find-class join-class-name))))
+ (dolist (slotdef (ordered-class-slots join-class))
+ (let ((res (generate-attribute-reference join-class slotdef)))
+ (when res
+ (push (cons slotdef res) sels))))))
+ sels))
+
;; Called by 'get-slot-values-from-view'
;;
(when objects
(unless class-name
(class-name (class-of (first objects))))
- )
- )
+ (let* ((class (find-class class-name))
+ (deferred-joins (generate-retrieval-joins-list class :deferred)))
+ (when deferred-joins
+ (warn "not yet implemented.")
+ ))))
(defun fault-join-slot-raw (class object slot-def)
;; For example, for (select 'employee-address) in test suite =>
;; select addr.*,ea_join.* FROM addr,ea_join WHERE ea_join.aaddressid=addr.addressid\g
+(defun build-objects (vals sclasses immediate-join-classes sels immediate-joins database refresh flatp)
+ "Used by find-all to build objects."
+ (labels ((build-object (vals vclass jclasses selects immediate-selects)
+ (let* ((class-name (class-name vclass))
+ (db-vals (butlast vals (- (list-length vals)
+ (list-length selects))))
+ (join-vals (subseq vals (list-length selects)))
+ (obj (make-instance class-name :view-database database))
+ (joins (mapcar #'(lambda (c) (when c (make-instance c :view-database database)))
+ jclasses)))
+ ;;(format t "db-vals: ~S, join-values: ~S~%" db-vals join-vals)
+ ;; use refresh keyword here
+ (setf obj (get-slot-values-from-view obj (mapcar #'car selects)
+ db-vals))
+ (mapc #'(lambda (jc) (get-slot-values-from-view jc (mapcar #'car immediate-selects) join-vals))
+ joins)
+ (mapc
+ #'(lambda (jc) (let ((slot (find (class-name (class-of jc)) (class-slots vclass)
+ :key #'(lambda (slot) (when (and (eq :join (view-class-slot-db-kind slot))
+ (eq (slot-definition-name slot)
+ (gethash :join-class (view-class-slot-db-info slot))))
+ (slot-definition-name slot))))))
+ (when slot
+ (setf (slot-value obj (slot-definition-name slot)) jc))))
+
+ joins)
+ (when refresh (instance-refreshed obj))
+ obj)))
+ (let ((objects (mapcar #'(lambda (sclass jclass sel immediate-join)
+ (prog1 (build-object vals sclass jclass sel immediate-join)
+ (setf vals (nthcdr (+ (list-length sel) (list-length immediate-join))
+ vals))))
+ sclasses immediate-join-classes sels immediate-joins)))
+ (if (and flatp (= (length sclasses) 1))
+ (car objects)
+ objects))))
+
(defun find-all (view-classes
&rest args
&key all set-operation distinct from where group-by having
View Classes VIEW-CLASSES are passed as arguments to SELECT."
(declare (ignore all set-operation group-by having offset limit inner-join on)
(optimize (debug 3) (speed 1)))
- (remf args :from)
- (remf args :flatp)
- (remf args :additional-fields)
- (remf args :result-types)
- (labels ((table-sql-expr (table)
- (sql-expression :table (view-table table)))
- (ref-equal (ref1 ref2)
+ (labels ((ref-equal (ref1 ref2)
(equal (sql ref1)
(sql ref2)))
+ (table-sql-expr (table)
+ (sql-expression :table (view-table table)))
(tables-equal (table-a table-b)
- (string= (string (slot-value table-a 'name))
- (string (slot-value table-b 'name))))
- (build-object (vals vclass selects)
- (let* ((class-name (class-name vclass))
- (db-vals (butlast vals (- (list-length vals)
- (list-length selects))))
- (obj (make-instance class-name :view-database database)))
- ;; use refresh keyword here
- (setf obj (get-slot-values-from-view obj (mapcar #'car selects)
- db-vals))
- (when refresh (instance-refreshed obj))
- obj))
- (build-objects (vals sclasses sels)
- (let ((objects (mapcar #'(lambda (sclass sel)
- (prog1 (build-object vals sclass sel)
- (setf vals (nthcdr (list-length sel)
- vals))))
- sclasses sels)))
- (if (and flatp (= (length sclasses) 1))
- (car objects)
- objects))))
+ (when (and table-a table-b)
+ (string= (string (slot-value table-a 'name))
+ (string (slot-value table-b 'name))))))
+ (remf args :from)
+ (remf args :where)
+ (remf args :flatp)
+ (remf args :additional-fields)
+ (remf args :result-types)
(let* ((*db-deserializing* t)
(sclasses (mapcar #'find-class view-classes))
- (immediate-joins (mapcar #'generate-immediate-joins-list sclasses))
+ (immediate-join-slots (mapcar #'(lambda (c) (generate-retrieval-joins-list c :immediate)) sclasses))
+ (immediate-join-classes (mapcar #'(lambda (jcs)
+ (mapcar #'(lambda (slotdef)
+ (find-class (gethash :join-class (view-class-slot-db-info slotdef))))
+ jcs))
+ immediate-join-slots))
+ (immediate-join-sels (mapcar #'generate-immediate-joins-selection-list sclasses))
(sels (mapcar #'generate-selection-list sclasses))
- (fullsels (apply #'append sels))
+ (fullsels (apply #'append (mapcar #'append sels immediate-join-sels)))
(sel-tables (collect-table-refs where))
- (tables (remove-duplicates (append (mapcar #'table-sql-expr sclasses)
- sel-tables)
- :test #'tables-equal))
+ (tables (remove-if #'null
+ (remove-duplicates (append (mapcar #'table-sql-expr sclasses)
+ (mapcar #'(lambda (jcs)
+ (mapcan #'(lambda (jc)
+ (when jc (table-sql-expr jc)))
+ jcs))
+ immediate-join-classes)
+ sel-tables)
+ :test #'tables-equal)))
(res nil))
- (dolist (ob (listify order-by))
- (when (and ob (not (member ob (mapcar #'cdr fullsels)
- :test #'ref-equal)))
- (setq fullsels
- (append fullsels (mapcar #'(lambda (att) (cons nil att))
- (listify ob))))))
- (dolist (ob (listify order-by-descending))
- (when (and ob (not (member ob (mapcar #'cdr fullsels)
- :test #'ref-equal)))
- (setq fullsels
- (append fullsels (mapcar #'(lambda (att) (cons nil att))
- (listify ob))))))
- (dolist (ob (listify distinct))
- (when (and (typep ob 'sql-ident)
- (not (member ob (mapcar #'cdr fullsels)
- :test #'ref-equal)))
- (setq fullsels
+ (dolist (ob (listify order-by))
+ (when (and ob (not (member ob (mapcar #'cdr fullsels)
+ :test #'ref-equal)))
+ (setq fullsels
(append fullsels (mapcar #'(lambda (att) (cons nil att))
(listify ob))))))
- (setq res
- (apply #'select
- (append (mapcar #'cdr fullsels)
- (cons :from
- (list (append (when from (listify from))
- (listify tables))))
- (list :result-types result-types)
- args)))
- (mapcar #'(lambda (r) (build-objects r sclasses sels)) res))))
+ (dolist (ob (listify order-by-descending))
+ (when (and ob (not (member ob (mapcar #'cdr fullsels)
+ :test #'ref-equal)))
+ (setq fullsels
+ (append fullsels (mapcar #'(lambda (att) (cons nil att))
+ (listify ob))))))
+ (dolist (ob (listify distinct))
+ (when (and (typep ob 'sql-ident)
+ (not (member ob (mapcar #'cdr fullsels)
+ :test #'ref-equal)))
+ (setq fullsels
+ (append fullsels (mapcar #'(lambda (att) (cons nil att))
+ (listify ob))))))
+ (mapcar #'(lambda (vclass jclasses jslots)
+ (when jclasses
+ (mapcar
+ #'(lambda (jclass jslot)
+ (let ((dbi (view-class-slot-db-info jslot)))
+ (setq where
+ (append
+ (list (sql-operation '==
+ (sql-expression
+ :attribute (gethash :foreign-key dbi)
+ :table (view-table jclass))
+ (sql-expression
+ :attribute (gethash :home-key dbi)
+ :table (view-table vclass))))
+ (when where (listify where))))))
+ jclasses jslots)))
+ sclasses immediate-join-classes immediate-join-slots)
+ (setq res
+ (apply #'select
+ (append (mapcar #'cdr fullsels)
+ (cons :from
+ (list (append (when from (listify from))
+ (listify tables))))
+ (list :result-types result-types)
+ (when where (list :where where))
+ args)))
+ (mapcar #'(lambda (r)
+ (build-objects r sclasses immediate-join-classes sels immediate-join-sels database refresh flatp))
+ res))))
(defmethod instance-refreshed ((instance standard-db-object)))
projects / clsql.git / commitdiff