(slot-value obj (slot-definition-name k))
database))))
(let* ((keys (keyslots-for-class (class-of obj)))
- (keyxprs (mapcar #'qfk (reverse keys))))
- (cond
+ (keyxprs (mapcar #'qfk (reverse keys))))
+ (cond
((= (length keyxprs) 0) nil)
((= (length keyxprs) 1) (car keyxprs))
((> (length keyxprs) 1) (apply #'sql-operation 'and keyxprs)))))))
(cond
((eq (view-class-slot-db-kind slotdef) :base)
(sql-expression :attribute (view-class-slot-column slotdef)
- :table (view-table vclass)))
+ :table (view-table vclass)))
((eq (view-class-slot-db-kind slotdef) :key)
(sql-expression :attribute (view-class-slot-column slotdef)
- :table (view-table vclass)))
+ :table (view-table vclass)))
(t nil)))
;;
(let ((sels nil))
(dolist (slotdef (ordered-class-slots vclass))
(let ((res (generate-attribute-reference vclass slotdef)))
- (when res
+ (when res
(push (cons slotdef res) sels))))
(if sels
- sels
+ sels
(error "No slots of type :base in view-class ~A" (class-name vclass)))))
(let ((join-slotdefs nil))
(dolist (slotdef (ordered-class-slots vclass) join-slotdefs)
(when (and (eq :join (view-class-slot-db-kind slotdef))
- (eq retrieval-method (gethash :retrieval (view-class-slot-db-info slotdef))))
- (push slotdef join-slotdefs)))))
+ (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))))))
+ (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'
;;
-(defvar *update-context* nil)
-
(defmethod update-slot-from-db ((instance standard-db-object) slotdef value)
(declare (optimize (speed 3) #+cmu (extensions:inhibit-warnings 3)))
(let* ((slot-reader (view-class-slot-db-reader slotdef))
- (slot-name (slot-definition-name slotdef))
- (slot-type (specified-type slotdef))
- (*update-context* (cons (type-of instance) slot-name)))
+ (slot-name (slot-definition-name slotdef))
+ (slot-type (specified-type slotdef)))
(cond ((and value (null slot-reader))
(setf (slot-value instance slot-name)
(read-sql-value value (delistify slot-type)
(view-database instance)
- (database-underlying-type
- (view-database instance)))))
- ((null value)
+ (database-underlying-type
+ (view-database instance)))))
+ ((null value)
(update-slot-with-null instance slot-name slotdef))
((typep slot-reader 'string)
(setf (slot-value instance slot-name)
(format nil slot-reader value)))
- ((typep slot-reader 'function)
+ ((typep slot-reader '(or symbol function))
(setf (slot-value instance slot-name)
(apply slot-reader (list value))))
(t
(error "Slot reader is of an unusual type.")))))
-(defmethod key-value-from-db (slotdef value database)
+(defmethod key-value-from-db (slotdef value database)
(declare (optimize (speed 3) #+cmu (extensions:inhibit-warnings 3)))
(let ((slot-reader (view-class-slot-db-reader slotdef))
(slot-type (specified-type slotdef)))
(cond ((and value (null slot-reader))
(read-sql-value value (delistify slot-type) database
- (database-underlying-type database)))
+ (database-underlying-type database)))
((null value)
nil)
((typep slot-reader 'string)
(format nil slot-reader value))
- ((typep slot-reader 'function)
+ ((typep slot-reader '(or symbol function))
(apply slot-reader (list value)))
(t
(error "Slot reader is of an unusual type.")))))
(defun db-value-from-slot (slotdef val database)
(let ((dbwriter (view-class-slot-db-writer slotdef))
- (dbtype (specified-type slotdef)))
+ (dbtype (specified-type slotdef)))
(typecase dbwriter
(string (format nil dbwriter val))
- (function (apply dbwriter (list val)))
+ ((and (or symbol function) (not null)) (apply dbwriter (list val)))
(t
(database-output-sql-as-type
- (typecase dbtype
- (cons (car dbtype))
- (t dbtype))
- val database (database-underlying-type database))))))
+ (typecase dbtype
+ (cons (car dbtype))
+ (t dbtype))
+ val database (database-underlying-type database))))))
(defun check-slot-type (slotdef val)
(let* ((slot-type (specified-type slotdef))
(when (and slot-type val)
(unless (typep val basetype)
(error 'sql-user-error
- :message
- (format nil "Invalid value ~A in slot ~A, not of type ~A."
- val (slot-definition-name slotdef) slot-type))))))
+ :message
+ (format nil "Invalid value ~A in slot ~A, not of type ~A."
+ val (slot-definition-name slotdef) slot-type))))))
;;
;; Called by find-all
(defmethod get-slot-values-from-view (obj slotdeflist values)
(flet ((update-slot (slot-def values)
- (update-slot-from-db obj slot-def values)))
+ (update-slot-from-db obj slot-def values)))
(mapc #'update-slot slotdeflist values)
obj))
(defmethod update-record-from-slot ((obj standard-db-object) slot &key
- (database *default-database*))
+ (database *default-database*))
(let* ((database (or (view-database obj) database))
- (vct (view-table (class-of obj)))
+ (vct (view-table (class-of obj)))
(sd (slotdef-for-slot-with-class slot (class-of obj))))
(check-slot-type sd (slot-value obj slot))
(let* ((att (view-class-slot-column sd))
obj :database database)
:database database))
((and vct sd (not (view-database obj)))
- (insert-records :into (sql-expression :table vct)
+ (insert-records :into (sql-expression :table vct)
:attributes (list (sql-expression :attribute att))
:values (list val)
- :database database)
- (setf (slot-value obj 'view-database) database))
+ :database database)
+ (setf (slot-value obj 'view-database) database))
(t
(error "Unable to update record.")))))
(values))
(defmethod update-record-from-slots ((obj standard-db-object) slots &key
(database *default-database*))
(let* ((database (or (view-database obj) database))
- (vct (view-table (class-of obj)))
+ (vct (view-table (class-of obj)))
(sds (slotdefs-for-slots-with-class slots (class-of obj)))
(avps (mapcar #'(lambda (s)
(let ((val (slot-value
(error "Unable to update records"))))
(values))
-(defmethod update-records-from-instance ((obj standard-db-object)
- &key (database *default-database*))
- (let ((database (or (view-database obj) database)))
+(defmethod update-records-from-instance ((obj standard-db-object) &key database)
+ (let ((database (or database (view-database obj) *default-database*)))
(labels ((slot-storedp (slot)
- (and (member (view-class-slot-db-kind slot) '(:base :key))
- (slot-boundp obj (slot-definition-name slot))))
- (slot-value-list (slot)
- (let ((value (slot-value obj (slot-definition-name slot))))
- (check-slot-type slot value)
- (list (sql-expression :attribute (view-class-slot-column slot))
- (db-value-from-slot slot value database)))))
+ (and (member (view-class-slot-db-kind slot) '(:base :key))
+ (slot-boundp obj (slot-definition-name slot))))
+ (slot-value-list (slot)
+ (let ((value (slot-value obj (slot-definition-name slot))))
+ (check-slot-type slot value)
+ (list (sql-expression :attribute (view-class-slot-column slot))
+ (db-value-from-slot slot value database)))))
(let* ((view-class (class-of obj))
- (view-class-table (view-table view-class))
- (slots (remove-if-not #'slot-storedp
- (ordered-class-slots view-class)))
- (record-values (mapcar #'slot-value-list slots)))
- (unless record-values
- (error "No settable slots."))
- (if (view-database obj)
- (update-records (sql-expression :table view-class-table)
- :av-pairs record-values
- :where (key-qualifier-for-instance
- obj :database database)
- :database database)
- (progn
- (insert-records :into (sql-expression :table view-class-table)
- :av-pairs record-values
- :database database)
- (setf (slot-value obj 'view-database) database))))))
+ (view-class-table (view-table view-class))
+ (slots (remove-if-not #'slot-storedp
+ (ordered-class-slots view-class)))
+ (record-values (mapcar #'slot-value-list slots)))
+ (unless record-values
+ (error "No settable slots."))
+ (if (view-database obj)
+ (update-records (sql-expression :table view-class-table)
+ :av-pairs record-values
+ :where (key-qualifier-for-instance
+ obj :database database)
+ :database database)
+ (progn
+ (insert-records :into (sql-expression :table view-class-table)
+ :av-pairs record-values
+ :database database)
+ (setf (slot-value obj 'view-database) database))))))
(values))
(defmethod delete-instance-records ((instance standard-db-object))
(let ((vt (sql-expression :table (view-table (class-of instance))))
- (vd (view-database instance)))
+ (vd (view-database instance)))
(if vd
- (let ((qualifier (key-qualifier-for-instance instance :database vd)))
- (delete-records :from vt :where qualifier :database vd)
- (setf (slot-value instance 'view-database) nil))
- (signal-no-database-error vd))))
+ (let ((qualifier (key-qualifier-for-instance instance :database vd)))
+ (delete-records :from vt :where qualifier :database vd)
+ (setf (record-caches vd) nil)
+ (setf (slot-value instance 'view-database) nil)
+ (values))
+ (signal-no-database-error vd))))
(defmethod update-instance-from-records ((instance standard-db-object)
&key (database *default-database*))
(sels (generate-selection-list view-class))
(res (apply #'select (append (mapcar #'cdr sels)
(list :from view-table
- :where view-qual)
- (list :result-types nil)))))
+ :where view-qual
+ :result-types nil
+ :database vd)))))
(when res
(get-slot-values-from-view instance (mapcar #'car sels) (car res)))))
(slot-def (slotdef-for-slot-with-class slot view-class))
(att-ref (generate-attribute-reference view-class slot-def))
(res (select att-ref :from view-table :where view-qual
- :result-types nil)))
- (when res
+ :result-types nil)))
+ (when res
(get-slot-values-from-view instance (list slot-def) (car res)))))
(defmethod update-slot-with-null ((object standard-db-object)
- slotname
- slotdef)
+ slotname
+ slotdef)
(setf (slot-value object slotname) (slot-value slotdef 'void-value)))
(defvar +no-slot-value+ '+no-slot-value+)
(defsql sql-slot-value (:symbol "slot-value") (classname slot &optional (value +no-slot-value+) (database *default-database*))
(let* ((class (find-class classname))
- (sld (slotdef-for-slot-with-class slot class)))
+ (sld (slotdef-for-slot-with-class slot class)))
(if sld
- (if (eq value +no-slot-value+)
- (sql-expression :attribute (view-class-slot-column sld)
- :table (view-table class))
+ (if (eq value +no-slot-value+)
+ (sql-expression :attribute (view-class-slot-column sld)
+ :table (view-table class))
(db-value-from-slot
sld
value
(error "Unknown slot ~A for class ~A" slot classname))))
(defsql sql-view-class (:symbol "view-class") (classname &optional (database *default-database*))
- (declare (ignore database))
- (let* ((class (find-class classname)))
- (unless (view-table class)
- (error "No view-table for class ~A" classname))
- (sql-expression :table (view-table class))))
+ (declare (ignore database))
+ (let* ((class (find-class classname)))
+ (unless (view-table class)
+ (error "No view-table for class ~A" classname))
+ (sql-expression :table (view-table class))))
+
(defmethod database-get-type-specifier (type args database db-type)
(declare (ignore type args database db-type))
- "VARCHAR(255)")
+ (format nil "VARCHAR(~D)" *default-string-length*))
(defmethod database-get-type-specifier ((type (eql 'integer)) args database db-type)
(declare (ignore database db-type))
(if args
(format nil "INT(~A)" (car args))
- "INT"))
+ "INT"))
-(deftype bigint ()
+(deftype tinyint ()
+ "An 8-bit integer, this width may vary by SQL implementation."
+ 'integer)
+
+(defmethod database-get-type-specifier ((type (eql 'tinyint)) args database db-type)
+ (declare (ignore args database db-type))
+ "INT")
+
+(deftype smallint ()
+ "An integer smaller than a 32-bit integer. this width may vary by SQL implementation."
+ 'integer)
+
+(defmethod database-get-type-specifier ((type (eql 'smallint)) args database db-type)
+ (declare (ignore args database db-type))
+ "INT")
+
+(deftype mediumint ()
+ "An integer smaller than a 32-bit integer, but may be larger than a smallint. This width may vary by SQL implementation."
+ 'integer)
+
+(defmethod database-get-type-specifier ((type (eql 'mediumint)) args database db-type)
+ (declare (ignore args database db-type))
+ "INT")
+
+(deftype bigint ()
"An integer larger than a 32-bit integer, this width may vary by SQL implementation."
'integer)
(defmethod database-get-type-specifier ((type (eql 'bigint)) args database db-type)
(declare (ignore args database db-type))
"BIGINT")
-
-(defmethod database-get-type-specifier ((type (eql 'simple-base-string)) args
- database db-type)
- (declare (ignore database db-type))
- (if args
- (format nil "VARCHAR(~A)" (car args))
- "VARCHAR(255)"))
-(defmethod database-get-type-specifier ((type (eql 'simple-string)) args
+(deftype varchar (&optional size)
+ "A variable length string for the SQL varchar type."
+ (declare (ignore size))
+ 'string)
+
+(defmethod database-get-type-specifier ((type (eql 'varchar)) args
database db-type)
(declare (ignore database db-type))
(if args
(format nil "VARCHAR(~A)" (car args))
- "VARCHAR(255)"))
+ (format nil "VARCHAR(~D)" *default-string-length*)))
(defmethod database-get-type-specifier ((type (eql 'string)) args database db-type)
(declare (ignore database db-type))
(if args
- (format nil "VARCHAR(~A)" (car args))
- "VARCHAR(255)"))
+ (format nil "CHAR(~A)" (car args))
+ (format nil "VARCHAR(~D)" *default-string-length*)))
-(deftype universal-time ()
+(deftype universal-time ()
"A positive integer as returned by GET-UNIVERSAL-TIME."
'(integer 1 *))
(declare (ignore args database db-type))
"TIMESTAMP")
+(defmethod database-get-type-specifier ((type (eql 'date)) args database db-type)
+ (declare (ignore args database db-type))
+ "DATE")
+
(defmethod database-get-type-specifier ((type (eql 'duration)) args database db-type)
(declare (ignore database args db-type))
"VARCHAR")
(declare (ignore database args db-type))
"INT8")
-(deftype raw-string (&optional len)
- "A string which is not trimmed when retrieved from the database"
+#+ignore
+(deftype char (&optional len)
+ "A lisp type for the SQL CHAR type."
`(string ,len))
-(defmethod database-get-type-specifier ((type (eql 'raw-string)) args database db-type)
- (declare (ignore database db-type))
- (if args
- (format nil "VARCHAR(~A)" (car args))
- "VARCHAR"))
-
(defmethod database-get-type-specifier ((type (eql 'float)) args database db-type)
(declare (ignore database db-type))
(if args
(format nil "FLOAT(~A)" (car args))
"FLOAT"))
+(deftype generalized-boolean ()
+ "A type which outputs a SQL boolean value, though any lisp type can be stored in the slot."
+ t)
+
(defmethod database-get-type-specifier ((type (eql 'boolean)) args database db-type)
(declare (ignore args database db-type))
"BOOL")
+(defmethod database-get-type-specifier ((type (eql 'generalized-boolean)) args database db-type)
+ (declare (ignore args database db-type))
+ "BOOL")
+
+(defmethod database-get-type-specifier ((type (eql 'number)) args database db-type)
+ (declare (ignore database db-type))
+ (cond
+ ((and (consp args) (= (length args) 2))
+ (format nil "NUMBER(~D,~D)" (first args) (second args)))
+ ((and (consp args) (= (length args) 1))
+ (format nil "NUMBER(~D)" (first args)))
+ (t
+ "NUMBER")))
+
+(defmethod database-get-type-specifier ((type (eql 'char)) args database db-type)
+ (declare (ignore database db-type))
+ (if args
+ (format nil "CHAR(~D)" (first args))
+ "CHAR(1)"))
+
+
(defmethod database-output-sql-as-type (type val database db-type)
(declare (ignore type database db-type))
val)
(defmethod database-output-sql-as-type ((type (eql 'symbol)) val database db-type)
(declare (ignore database db-type))
- (if (keywordp val)
- (symbol-name val)
- (if val
- (concatenate 'string
- (package-name (symbol-package val))
- "::"
- (symbol-name val))
- "")))
+ (if val
+ (concatenate 'string
+ (package-name (symbol-package val))
+ "::"
+ (symbol-name val))
+ ""))
(defmethod database-output-sql-as-type ((type (eql 'keyword)) val database db-type)
(declare (ignore database db-type))
(declare (ignore database db-type))
(if val "t" "f"))
+(defmethod database-output-sql-as-type ((type (eql 'generalized-boolean)) val database db-type)
+ (declare (ignore database db-type))
+ (if val "t" "f"))
+
(defmethod database-output-sql-as-type ((type (eql 'string)) val database db-type)
(declare (ignore database db-type))
val)
-(defmethod database-output-sql-as-type ((type (eql 'simple-string))
- val database db-type)
+(defmethod database-output-sql-as-type ((type (eql 'char)) val database db-type)
(declare (ignore database db-type))
- val)
+ (etypecase val
+ (character (write-to-string val))
+ (string val)))
-(defmethod database-output-sql-as-type ((type (eql 'simple-base-string))
- val database db-type)
+(defmethod database-output-sql-as-type ((type (eql 'float)) val database db-type)
(declare (ignore database db-type))
- val)
+ (let ((*read-default-float-format* (type-of val)))
+ (format nil "~F" val)))
(defmethod read-sql-value (val type database db-type)
(declare (ignore type database db-type))
(declare (ignore database db-type))
val)
-(defmethod read-sql-value (val (type (eql 'simple-string)) database db-type)
+(defmethod read-sql-value (val (type (eql 'varchar)) database db-type)
(declare (ignore database db-type))
val)
-(defmethod read-sql-value (val (type (eql 'simple-base-string)) database db-type)
+(defmethod read-sql-value (val (type (eql 'char)) database db-type)
(declare (ignore database db-type))
- val)
-
-(defmethod read-sql-value (val (type (eql 'raw-string)) database db-type)
- (declare (ignore database db-type))
- val)
+ (schar val 0))
(defmethod read-sql-value (val (type (eql 'keyword)) database db-type)
(declare (ignore database db-type))
(when (< 0 (length val))
- (intern (symbol-name-default-case val)
- (find-package '#:keyword))))
+ (intern (symbol-name-default-case val)
+ (find-package '#:keyword))))
(defmethod read-sql-value (val (type (eql 'symbol)) database db-type)
(declare (ignore database db-type))
(when (< 0 (length val))
(unless (string= val (symbol-name-default-case "NIL"))
- (intern (symbol-name-default-case val)
- (symbol-package *update-context*)))))
+ (read-from-string val))))
(defmethod read-sql-value (val (type (eql 'integer)) database db-type)
(declare (ignore database db-type))
(parse-integer val)))
(number val)))
+(defmethod read-sql-value (val (type (eql 'smallint)) database db-type)
+ (declare (ignore database db-type))
+ (etypecase val
+ (string
+ (unless (string-equal "NIL" val)
+ (parse-integer val)))
+ (number val)))
+
(defmethod read-sql-value (val (type (eql 'bigint)) database db-type)
(declare (ignore database db-type))
(etypecase val
(declare (ignore database db-type))
(equal "t" val))
-(defmethod read-sql-value (val (type (eql 'univeral-time)) database db-type)
+(defmethod read-sql-value (val (type (eql 'generalized-boolean)) database db-type)
+ (declare (ignore database db-type))
+ (equal "t" val))
+
+(defmethod read-sql-value (val (type (eql 'number)) database db-type)
+ (declare (ignore database db-type))
+ (etypecase val
+ (string
+ (unless (string-equal "NIL" val)
+ (read-from-string val)))
+ (number val)))
+
+(defmethod read-sql-value (val (type (eql 'universal-time)) database db-type)
(declare (ignore database db-type))
(unless (eq 'NULL val)
(etypecase val
(unless (eq 'NULL val)
(parse-timestring val)))
+(defmethod read-sql-value (val (type (eql 'date)) database db-type)
+ (declare (ignore database db-type))
+ (unless (eq 'NULL val)
+ (parse-datestring val)))
+
(defmethod read-sql-value (val (type (eql 'duration)) database db-type)
(declare (ignore database db-type))
(unless (or (eq 'NULL val)
#+ignore
(defun fault-join-target-slot (class object slot-def)
(let* ((res (fault-join-slot-raw class object slot-def))
- (dbi (view-class-slot-db-info slot-def))
- (target-name (gethash :target-slot dbi))
- (target-class (find-class target-name)))
+ (dbi (view-class-slot-db-info slot-def))
+ (target-name (gethash :target-slot dbi))
+ (target-class (find-class target-name)))
(when res
(mapcar (lambda (obj)
- (list
- (car
- (fault-join-slot-raw
- target-class
- obj
- (find target-name (class-slots (class-of obj))
- :key #'slot-definition-name)))
- obj))
- res)
+ (list
+ (car
+ (fault-join-slot-raw
+ target-class
+ obj
+ (find target-name (class-slots (class-of obj))
+ :key #'slot-definition-name)))
+ obj))
+ res)
#+ignore ;; this doesn't work when attempting to call slot-value
(mapcar (lambda (obj)
- (cons obj (slot-value obj ts))) res))))
+ (cons obj (slot-value obj ts))) res))))
(defun fault-join-target-slot (class object slot-def)
(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))))
+ (ts (gethash :target-slot dbi))
+ (jc (gethash :join-class dbi))
+ (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))
+ (tsc (gethash :join-class tdbi))
+ (ts-view-table (view-table (find-class tsc)))
+ (jq (join-qualifier class object slot-def))
+ (key (slot-value object (gethash :home-key dbi))))
+
(when jq
(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)))
- (: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)))))))
+ (:immediate
+ (let ((res
+ (find-all (list tsc)
+ :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
+ :database (view-database object))))
+ (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)))
+ (:deferred
+ ;; just fill in minimal slots
+ (mapcar
+ #'(lambda (k)
+ (let ((instance (make-instance tsc :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
+ :database (view-database object))))))))
;;; Remote Joins
UPDATE-OBJECT-JOINS.")
(defun update-objects-joins (objects &key (slots t) (force-p t)
- class-name (max-len
- *default-update-objects-max-len*))
+ class-name (max-len
+ *default-update-objects-max-len*))
"Updates from the records of the appropriate database tables
the join slots specified by SLOTS in the supplied list of View
Class instances OBJECTS. SLOTS is t by default which means that
(unless class-name
(setq class-name (class-name (class-of (first objects)))))
(let* ((class (find-class class-name))
- (class-slots (ordered-class-slots class))
- (slotdefs
- (if (eq t slots)
- (generate-retrieval-joins-list class :deferred)
- (remove-if #'null
- (mapcar #'(lambda (name)
- (let ((slotdef (find name class-slots :key #'slot-definition-name)))
- (unless slotdef
- (warn "Unable to find slot named ~S in class ~S." name class))
- slotdef))
- slots)))))
+ (class-slots (ordered-class-slots class))
+ (slotdefs
+ (if (eq t slots)
+ (generate-retrieval-joins-list class :deferred)
+ (remove-if #'null
+ (mapcar #'(lambda (name)
+ (let ((slotdef (find name class-slots :key #'slot-definition-name)))
+ (unless slotdef
+ (warn "Unable to find slot named ~S in class ~S." name class))
+ slotdef))
+ slots)))))
(dolist (slotdef slotdefs)
- (let* ((dbi (view-class-slot-db-info slotdef))
- (slotdef-name (slot-definition-name slotdef))
- (foreign-key (gethash :foreign-key dbi))
- (home-key (gethash :home-key dbi))
- (object-keys
- (remove-duplicates
- (if force-p
- (mapcar #'(lambda (o) (slot-value o home-key)) objects)
- (remove-if #'null
- (mapcar
- #'(lambda (o) (if (slot-boundp o slotdef-name)
- nil
- (slot-value o home-key)))
- objects)))))
- (n-object-keys (length object-keys))
- (query-len (or max-len n-object-keys)))
-
- (do ((i 0 (+ i query-len)))
- ((>= i n-object-keys))
- (let* ((keys (if max-len
- (subseq object-keys i (min (+ i query-len) n-object-keys))
- object-keys))
- (results (find-all (list (gethash :join-class dbi))
- :where (make-instance 'sql-relational-exp
- :operator 'in
- :sub-expressions (list (sql-expression :attribute foreign-key)
- keys))
- :result-types :auto
- :flatp t)))
- (dolist (object objects)
- (when (or force-p (not (slot-boundp object slotdef-name)))
- (let ((res (find (slot-value object home-key) results
- :key #'(lambda (res) (slot-value res foreign-key))
- :test #'equal)))
- (when res
- (setf (slot-value object slotdef-name) res)))))))))))
+ (let* ((dbi (view-class-slot-db-info slotdef))
+ (slotdef-name (slot-definition-name slotdef))
+ (foreign-key (gethash :foreign-key dbi))
+ (home-key (gethash :home-key dbi))
+ (object-keys
+ (remove-duplicates
+ (if force-p
+ (mapcar #'(lambda (o) (slot-value o home-key)) objects)
+ (remove-if #'null
+ (mapcar
+ #'(lambda (o) (if (slot-boundp o slotdef-name)
+ nil
+ (slot-value o home-key)))
+ objects)))))
+ (n-object-keys (length object-keys))
+ (query-len (or max-len n-object-keys)))
+
+ (do ((i 0 (+ i query-len)))
+ ((>= i n-object-keys))
+ (let* ((keys (if max-len
+ (subseq object-keys i (min (+ i query-len) n-object-keys))
+ object-keys))
+ (results (unless (gethash :target-slot dbi)
+ (find-all (list (gethash :join-class dbi))
+ :where (make-instance 'sql-relational-exp
+ :operator 'in
+ :sub-expressions (list (sql-expression :attribute foreign-key)
+ keys))
+ :result-types :auto
+ :flatp t)) ))
+
+ (dolist (object objects)
+ (when (or force-p (not (slot-boundp object slotdef-name)))
+ (let ((res (if results
+ (remove-if-not #'(lambda (obj)
+ (equal obj (slot-value
+ object
+ home-key)))
+ results
+ :key #'(lambda (res)
+ (slot-value res
+ foreign-key)))
+
+ (progn
+ (when (gethash :target-slot dbi)
+ (fault-join-target-slot class object slotdef))))))
+ (when res
+ (setf (slot-value object slotdef-name)
+ (if (gethash :set dbi) res (car res)))))))))))))
(values))
-
+
(defun fault-join-slot-raw (class object slot-def)
(let* ((dbi (view-class-slot-db-info slot-def))
- (jc (gethash :join-class dbi)))
+ (jc (gethash :join-class dbi)))
(let ((jq (join-qualifier class object slot-def)))
- (when jq
- (select jc :where jq :flatp t :result-types nil)))))
+ (when jq
+ (select jc :where jq :flatp t :result-types nil
+ :database (view-database object))))))
(defun fault-join-slot (class object slot-def)
(let* ((dbi (view-class-slot-db-info slot-def))
- (ts (gethash :target-slot dbi)))
+ (ts (gethash :target-slot dbi)))
(if (and ts (gethash :set dbi))
- (fault-join-target-slot class object slot-def)
- (let ((res (fault-join-slot-raw class object slot-def)))
- (when res
- (cond
- ((and ts (not (gethash :set dbi)))
- (mapcar (lambda (obj) (slot-value obj ts)) res))
- ((and (not ts) (not (gethash :set dbi)))
- (car res))
- ((and (not ts) (gethash :set dbi))
- res)))))))
+ (fault-join-target-slot class object slot-def)
+ (let ((res (fault-join-slot-raw class object slot-def)))
+ (when res
+ (cond
+ ((and ts (not (gethash :set dbi)))
+ (mapcar (lambda (obj) (slot-value obj ts)) res))
+ ((and (not ts) (not (gethash :set dbi)))
+ (car res))
+ ((and (not ts) (gethash :set dbi))
+ res)))))))
(defun join-qualifier (class object slot-def)
(declare (ignore class))
(let* ((dbi (view-class-slot-db-info slot-def))
- (jc (find-class (gethash :join-class dbi)))
- ;;(ts (gethash :target-slot dbi))
- ;;(tsdef (if ts (slotdef-for-slot-with-class ts jc)))
- (foreign-keys (gethash :foreign-key dbi))
- (home-keys (gethash :home-key dbi)))
+ (jc (find-class (gethash :join-class dbi)))
+ ;;(ts (gethash :target-slot dbi))
+ ;;(tsdef (if ts (slotdef-for-slot-with-class ts jc)))
+ (foreign-keys (gethash :foreign-key dbi))
+ (home-keys (gethash :home-key dbi)))
(when (every #'(lambda (slt)
- (and (slot-boundp object slt)
+ (and (slot-boundp object slt)
(not (null (slot-value object slt)))))
- (if (listp home-keys) home-keys (list home-keys)))
- (let ((jc
+ (if (listp home-keys) home-keys (list home-keys)))
+ (let ((jc
(mapcar #'(lambda (hk fk)
(let ((fksd (slotdef-for-slot-with-class fk jc)))
(sql-operation '==
(defun build-objects (vals sclasses immediate-join-classes sels immediate-joins database refresh flatp instances)
"Used by find-all to build objects."
(labels ((build-object (vals vclass jclasses selects immediate-selects instance)
- (let* ((db-vals (butlast vals (- (list-length vals)
- (list-length selects))))
- (obj (if instance instance (make-instance (class-name vclass) :view-database database)))
- (join-vals (subseq vals (list-length selects)))
- (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* ((db-vals (butlast vals (- (list-length vals)
+ (list-length selects))))
+ (obj (if instance instance (make-instance (class-name vclass) :view-database database)))
+ (join-vals (subseq vals (list-length selects)))
+ (joins (mapcar #'(lambda (c) (when c (make-instance c :view-database database)))
+ jclasses)))
+
+ ;;(format t "joins: ~S~%db-vals: ~S~%join-values: ~S~%selects: ~S~%immediate-selects: ~S~%"
+ ;;joins db-vals join-vals selects immediate-selects)
+
+ ;; use refresh keyword here
+ (setf obj (get-slot-values-from-view obj (mapcar #'car selects) db-vals))
+ (mapc #'(lambda (jo)
+ ;; find all immediate-select slots and join-vals for this object
+ (let* ((slots (class-slots (class-of jo)))
+ (pos-list (remove-if #'null
+ (mapcar
+ #'(lambda (s)
+ (position s immediate-selects
+ :key #'car
+ :test #'eq))
+ slots))))
+ (get-slot-values-from-view jo
+ (mapcar #'car
+ (mapcar #'(lambda (pos)
+ (nth pos immediate-selects))
+ pos-list))
+ (mapcar #'(lambda (pos) (nth pos join-vals))
+ pos-list))))
+ 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 instance)
- (prog1
- (build-object vals sclass jclass sel immediate-join instance)
- (setf vals (nthcdr (+ (list-length sel) (list-length immediate-join))
- vals))))
- sclasses immediate-join-classes sels immediate-joins instances)))
+ (mapcar #'(lambda (sclass jclass sel immediate-join instance)
+ (prog1
+ (build-object vals sclass jclass sel immediate-join instance)
+ (setf vals (nthcdr (+ (list-length sel) (list-length immediate-join))
+ vals))))
+ sclasses immediate-join-classes sels immediate-joins instances)))
(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
- order-by offset limit refresh flatp result-types
- inner-join on
- (database *default-database*)
- instances)
+ (car objects)
+ objects))))
+
+(defun find-all (view-classes
+ &rest args
+ &key all set-operation distinct from where group-by having
+ order-by offset limit refresh flatp result-types
+ inner-join on
+ (database *default-database*)
+ instances)
"Called by SELECT to generate object query results when the
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)))
- (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)
- (when (and table-a table-b)
- (string= (string (slot-value table-a 'name))
- (string (slot-value table-b 'name))))))
+ (declare (ignore all set-operation group-by having offset limit inner-join on))
+ (flet ((ref-equal (ref1 ref2)
+ (string= (sql-output ref1 database)
+ (sql-output ref2 database)))
+ (table-sql-expr (table)
+ (sql-expression :table (view-table table)))
+ (tables-equal (table-a table-b)
+ (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 :result-types)
(remf args :instances)
(let* ((*db-deserializing* t)
- (sclasses (mapcar #'find-class view-classes))
- (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 (mapcar #'append sels immediate-join-sels)))
- (sel-tables (collect-table-refs where))
- (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)))
- (order-by-slots (mapcar #'(lambda (ob) (if (atom ob) ob (car ob)))
- (listify order-by))))
-
+ (sclasses (mapcar #'find-class view-classes))
+ (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 (mapcar #'append sels immediate-join-sels)))
+ (sel-tables (collect-table-refs where))
+ (tables (remove-if #'null
+ (remove-duplicates
+ (append (mapcar #'table-sql-expr sclasses)
+ (mapcan #'(lambda (jc-list)
+ (mapcar
+ #'(lambda (jc) (when jc (table-sql-expr jc)))
+ jc-list))
+ immediate-join-classes)
+ sel-tables)
+ :test #'tables-equal)))
+ (order-by-slots (mapcar #'(lambda (ob) (if (atom ob) ob (car ob)))
+ (listify order-by)))
+ (join-where nil))
+
+
+ ;;(format t "sclasses: ~W~%ijc: ~W~%tables: ~W~%" sclasses immediate-join-classes tables)
+
(dolist (ob order-by-slots)
- (when (and ob (not (member ob (mapcar #'cdr fullsels)
- :test #'ref-equal)))
- (setq fullsels
- (append fullsels (mapcar #'(lambda (att) (cons nil att))
- order-by-slots)))))
+ (when (and ob (not (member ob (mapcar #'cdr fullsels)
+ :test #'ref-equal)))
+ (setq fullsels
+ (append fullsels (mapcar #'(lambda (att) (cons nil att))
+ order-by-slots)))))
(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))))))
+ (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)
- (let* ((rows (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)))
- (instances-to-add (- (length rows) (length instances)))
- (perhaps-extended-instances
- (if (plusp instances-to-add)
- (append instances (do ((i 0 (1+ i))
- (res nil))
- ((= i instances-to-add) res)
- (push (make-list (length sclasses) :initial-element nil) res)))
- instances))
- (objects (mapcar
- #'(lambda (row instance)
- (build-objects row sclasses immediate-join-classes sels
- immediate-join-sels database refresh flatp
- (if (and flatp (atom instance))
- (list instance)
- instance)))
- rows perhaps-extended-instances)))
- objects))))
+ (when jclasses
+ (mapcar
+ #'(lambda (jclass jslot)
+ (let ((dbi (view-class-slot-db-info jslot)))
+ (setq join-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 join-where (listify join-where))))))
+ jclasses jslots)))
+ sclasses immediate-join-classes immediate-join-slots)
+ ;; Reported buggy on clsql-devel
+ ;; (when where (setq where (listify where)))
+ (cond
+ ((and where join-where)
+ (setq where (list (apply #'sql-and where join-where))))
+ ((and (null where) (> (length join-where) 1))
+ (setq where (list (apply #'sql-and join-where)))))
+
+ (let* ((rows (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)))
+ (instances-to-add (- (length rows) (length instances)))
+ (perhaps-extended-instances
+ (if (plusp instances-to-add)
+ (append instances (do ((i 0 (1+ i))
+ (res nil))
+ ((= i instances-to-add) res)
+ (push (make-list (length sclasses) :initial-element nil) res)))
+ instances))
+ (objects (mapcar
+ #'(lambda (row instance)
+ (build-objects row sclasses immediate-join-classes sels
+ immediate-join-sels database refresh flatp
+ (if (and flatp (atom instance))
+ (list instance)
+ instance)))
+ rows perhaps-extended-instances)))
+ objects))))
(defmethod instance-refreshed ((instance standard-db-object)))
-(defun select (&rest select-all-args)
+(defvar *default-caching* t
+ "Controls whether SELECT caches objects by default. The CommonSQL
+specification states caching is on by default.")
+
+(defun select (&rest select-all-args)
"Executes a query on DATABASE, which has a default value of
*DEFAULT-DATABASE*, specified by the SQL expressions supplied
using the remaining arguments in SELECT-ALL-ARGS. The SELECT
argument can be used to generate queries in both functional and
-object oriented contexts.
+object oriented contexts.
In the functional case, the required arguments specify the
columns selected by the query and may be symbolic SQL expressions
by default which means that the second value returned is a list
of strings representing the columns selected by the query. If
FIELD-NAMES is nil, the list of column names is not returned as a
-second value.
+second value.
In the object oriented case, the required arguments to SELECT are
symbols denoting View Classes which specify the database tables
for each record selected in the query, the results are returned
as elements of a list."
- (flet ((select-objects (target-args)
- (and target-args
- (every #'(lambda (arg)
- (and (symbolp arg)
- (find-class arg nil)))
- target-args))))
- (multiple-value-bind (target-args qualifier-args)
- (query-get-selections select-all-args)
- (unless (or *default-database* (getf qualifier-args :database))
- (signal-no-database-error nil))
-
- (cond
- ((select-objects target-args)
- (let ((caching (getf qualifier-args :caching t))
- (result-types (getf qualifier-args :result-types :auto))
- (refresh (getf qualifier-args :refresh nil))
- (database (or (getf qualifier-args :database) *default-database*))
- (order-by (getf qualifier-args :order-by)))
- (remf qualifier-args :caching)
- (remf qualifier-args :refresh)
- (remf qualifier-args :result-types)
-
-
- ;; Add explicity table name to order-by if not specified and only
- ;; one selected table. This is required so FIND-ALL won't duplicate
- ;; the field
- (when (and order-by (= 1 (length target-args)))
- (let ((table-name (view-table (find-class (car target-args))))
- (order-by-list (copy-seq (listify order-by))))
-
- (loop for i from 0 below (length order-by-list)
- do (etypecase (nth i order-by-list)
- (sql-ident-attribute
- (unless (slot-value (nth i order-by-list) 'qualifier)
- (setf (slot-value (nth i order-by-list) 'qualifier) table-name)))
- (cons
- (unless (slot-value (car (nth i order-by-list)) 'qualifier)
- (setf (slot-value (car (nth i order-by-list)) 'qualifier) table-name)))))
- (setf (getf qualifier-args :order-by) order-by-list)))
-
- (cond
- ((null caching)
- (apply #'find-all target-args
- (append qualifier-args (list :result-types result-types))))
- (t
- (let ((cached (records-cache-results target-args qualifier-args database)))
- (cond
- ((and cached (not refresh))
- cached)
- ((and cached refresh)
- (let ((results (apply #'find-all (append (list target-args) qualifier-args `(:instances ,cached :result-types :auto)))))
- (setf (records-cache-results target-args qualifier-args database) results)
- results))
- (t
- (let ((results (apply #'find-all target-args (append qualifier-args
- '(:result-types :auto)))))
- (setf (records-cache-results target-args qualifier-args database) results)
- results))))))))
- (t
- (let* ((expr (apply #'make-query select-all-args))
- (specified-types
- (mapcar #'(lambda (attrib)
- (if (typep attrib 'sql-ident-attribute)
- (let ((type (slot-value attrib 'type)))
- (if type
- type
- t))
- t))
- (slot-value expr 'selections))))
- (destructuring-bind (&key (flatp nil)
- (result-types :auto)
- (field-names t)
- (database *default-database*)
- &allow-other-keys)
- qualifier-args
- (query expr :flatp flatp
- :result-types
- ;; specifying a type for an attribute overrides result-types
- (if (some #'(lambda (x) (not (eq t x))) specified-types)
- specified-types
- result-types)
- :field-names field-names
- :database database))))))))
+ (flet ((select-objects (target-args)
+ (and target-args
+ (every #'(lambda (arg)
+ (and (symbolp arg)
+ (find-class arg nil)))
+ target-args))))
+ (multiple-value-bind (target-args qualifier-args)
+ (query-get-selections select-all-args)
+ (unless (or *default-database* (getf qualifier-args :database))
+ (signal-no-database-error nil))
+
+ (cond
+ ((select-objects target-args)
+ (let ((caching (getf qualifier-args :caching *default-caching*))
+ (result-types (getf qualifier-args :result-types :auto))
+ (refresh (getf qualifier-args :refresh nil))
+ (database (or (getf qualifier-args :database) *default-database*))
+ (order-by (getf qualifier-args :order-by)))
+ (remf qualifier-args :caching)
+ (remf qualifier-args :refresh)
+ (remf qualifier-args :result-types)
+
+ ;; Add explicity table name to order-by if not specified and only
+ ;; one selected table. This is required so FIND-ALL won't duplicate
+ ;; the field
+ (when (and order-by (= 1 (length target-args)))
+ (let ((table-name (view-table (find-class (car target-args))))
+ (order-by-list (copy-seq (listify order-by))))
+
+ (loop for i from 0 below (length order-by-list)
+ do (etypecase (nth i order-by-list)
+ (sql-ident-attribute
+ (unless (slot-value (nth i order-by-list) 'qualifier)
+ (setf (slot-value (nth i order-by-list) 'qualifier) table-name)))
+ (cons
+ (unless (slot-value (car (nth i order-by-list)) 'qualifier)
+ (setf (slot-value (car (nth i order-by-list)) 'qualifier) table-name)))))
+ (setf (getf qualifier-args :order-by) order-by-list)))
+
+ (cond
+ ((null caching)
+ (apply #'find-all target-args
+ (append qualifier-args
+ (list :result-types result-types :refresh refresh))))
+ (t
+ (let ((cached (records-cache-results target-args qualifier-args database)))
+ (cond
+ ((and cached (not refresh))
+ cached)
+ ((and cached refresh)
+ (let ((results (apply #'find-all (append (list target-args) qualifier-args `(:instances ,cached :result-types :auto :refresh ,refresh)))))
+ (setf (records-cache-results target-args qualifier-args database) results)
+ results))
+ (t
+ (let ((results (apply #'find-all target-args (append qualifier-args
+ `(:result-types :auto :refresh ,refresh)))))
+ (setf (records-cache-results target-args qualifier-args database) results)
+ results))))))))
+ (t
+ (let* ((expr (apply #'make-query select-all-args))
+ (specified-types
+ (mapcar #'(lambda (attrib)
+ (if (typep attrib 'sql-ident-attribute)
+ (let ((type (slot-value attrib 'type)))
+ (if type
+ type
+ t))
+ t))
+ (slot-value expr 'selections))))
+ (destructuring-bind (&key (flatp nil)
+ (result-types :auto)
+ (field-names t)
+ (database *default-database*)
+ &allow-other-keys)
+ qualifier-args
+ (query expr :flatp flatp
+ :result-types
+ ;; specifying a type for an attribute overrides result-types
+ (if (some #'(lambda (x) (not (eq t x))) specified-types)
+ specified-types
+ result-types)
+ :field-names field-names
+ :database database))))))))
(defun compute-records-cache-key (targets qualifiers)
(list targets
- (do ((args *select-arguments* (cdr args))
- (results nil))
- ((null args) results)
- (let* ((arg (car args))
- (value (getf qualifiers arg)))
- (when value
- (push (list arg
- (typecase value
- (cons (cons (sql (car value)) (cdr value)))
- (%sql-expression (sql value))
- (t value)))
- results))))))
+ (do ((args *select-arguments* (cdr args))
+ (results nil))
+ ((null args) results)
+ (let* ((arg (car args))
+ (value (getf qualifiers arg)))
+ (when value
+ (push (list arg
+ (typecase value
+ (cons (cons (sql (car value)) (cdr value)))
+ (%sql-expression (sql value))
+ (t value)))
+ results))))))
(defun records-cache-results (targets qualifiers database)
(when (record-caches database)
- (gethash (compute-records-cache-key targets qualifiers) (record-caches database))))
+ (gethash (compute-records-cache-key targets qualifiers) (record-caches database))))
(defun (setf records-cache-results) (results targets qualifiers database)
(unless (record-caches database)
(setf (record-caches database)
- (make-hash-table :test 'equal
- #+allegro :values #+allegro :weak)))
+ (make-hash-table :test 'equal
+ #+allegro :values #+allegro :weak
+ #+clisp :weak #+clisp :value
+ #+lispworks :weak-kind #+lispworks :value)))
(setf (gethash (compute-records-cache-key targets qualifiers)
- (record-caches database)) results)
+ (record-caches database)) results)
results)
+
+;;; Serialization functions
+
+(defun write-instance-to-stream (obj stream)
+ "Writes an instance to a stream where it can be later be read.
+NOTE: an error will occur if a slot holds a value which can not be written readably."
+ (let* ((class (class-of obj))
+ (alist '()))
+ (dolist (slot (ordered-class-slots (class-of obj)))
+ (let ((name (slot-definition-name slot)))
+ (when (and (not (eq 'view-database name))
+ (slot-boundp obj name))
+ (push (cons name (slot-value obj name)) alist))))
+ (setq alist (reverse alist))
+ (write (cons (class-name class) alist) :stream stream :readably t))
+ obj)
+
+(defun read-instance-from-stream (stream)
+ (let ((raw (read stream nil nil)))
+ (when raw
+ (let ((obj (make-instance (car raw))))
+ (dolist (pair (cdr raw))
+ (setf (slot-value obj (car pair)) (cdr pair)))
+ obj))))
projects / clsql.git / blobdiff