(defvar *sql-stream* nil
"stream which accumulates SQL output")
-(defun sql-output (sql-expr &optional database)
+(defun sql-output (sql-expr &optional (database *default-database*))
+ "Top-level call for generating SQL strings. Returns an SQL
+ string appropriate for DATABASE which corresponds to the
+ supplied lisp expression SQL-EXPR."
(progv '(*sql-stream*)
`(,(make-string-output-stream))
(output-sql sql-expr database)
(get-output-stream-string *sql-stream*)))
+(defmethod output-sql (expr database)
+ (write-string (database-output-sql expr database) *sql-stream*)
+ (values))
+
+(defvar *output-hash* (make-hash-table :test #'equal)
+ "For caching generated SQL strings.")
+
+(defmethod output-sql :around ((sql t) database)
+ (let* ((hash-key (output-sql-hash-key sql database))
+ (hash-value (when hash-key (gethash hash-key *output-hash*))))
+ (cond ((and hash-key hash-value)
+ (write-string hash-value *sql-stream*))
+ (hash-key
+ (let ((*sql-stream* (make-string-output-stream)))
+ (call-next-method)
+ (setf hash-value (get-output-stream-string *sql-stream*))
+ (setf (gethash hash-key *output-hash*) hash-value))
+ (write-string hash-value *sql-stream*))
+ (t
+ (call-next-method)))))
+
+(defmethod output-sql-hash-key (expr database)
+ (declare (ignore expr database))
+ nil)
+
(defclass %sql-expression ()
())
(defmethod print-object ((self %sql-expression) stream)
(print-unreadable-object
(self stream :type t)
- (write-string (sql-output self) stream)))
+ (write-string (sql-output self) stream))
+ self)
;; For straight up strings
(defmethod print-object ((ident sql) stream)
(format stream "#<~S \"~A\">"
(type-of ident)
- (sql-output ident nil)))
+ (sql-output ident nil))
+ ident)
;; For SQL Identifiers of generic type
+
(defclass sql-ident (%sql-expression)
((name
:initarg :name
- :initform "NULL"))
+ :initform +null-string+))
(:documentation "An SQL identifer."))
(defmethod make-load-form ((sql sql-ident) &optional environment)
sql
`(make-instance 'sql-ident :name ',name)))
-(defvar *output-hash* (make-hash-table :test #'equal))
-
-(defmethod output-sql-hash-key (expr database)
- (declare (ignore expr database))
- nil)
-
-#+ignore
-(defmethod output-sql :around ((sql t) database)
- (let* ((hash-key (output-sql-hash-key sql database))
- (hash-value (when hash-key (gethash hash-key *output-hash*))))
- (cond ((and hash-key hash-value)
- (write-string hash-value *sql-stream*))
- (hash-key
- (let ((*sql-stream* (make-string-output-stream)))
- (call-next-method)
- (setf hash-value (get-output-stream-string *sql-stream*))
- (setf (gethash hash-key *output-hash*) hash-value))
- (write-string hash-value *sql-stream*))
- (t
- (call-next-method)))))
-
(defmethod output-sql ((expr sql-ident) database)
(with-slots (name) expr
(write-string
- (convert-to-db-default-case
+ (convert-to-db-default-case
(etypecase name
- (string name)
- (symbol (symbol-name name)))
+ (string name)
+ (symbol (symbol-name name)))
database)
*sql-stream*))
t)
(defclass sql-ident-attribute (sql-ident)
((qualifier
:initarg :qualifier
- :initform "NULL")
+ :initform +null-string+)
(type
:initarg :type
- :initform "NULL"))
+ :initform +null-string+))
(:documentation "An SQL Attribute identifier."))
(defmethod collect-table-refs (sql)
(defmethod output-sql ((expr sql-ident-attribute) database)
(with-slots (qualifier name type) expr
(if (and (not qualifier) (not type))
- (etypecase name
- ;; Honor care of name
- (string
- (write-string name *sql-stream*))
- (symbol
- (write-string (sql-escape (convert-to-db-default-case
- (symbol-name name) database)) *sql-stream*)))
-
- ;;; KMR: The TYPE field is used by CommonSQL for type conversion -- it
+ (etypecase name
+ ;; Honor care of name
+ (string
+ (write-string name *sql-stream*))
+ (symbol
+ (write-string (sql-escape (convert-to-db-default-case
+ (symbol-name name) database)) *sql-stream*)))
+
+ ;;; KMR: The TYPE field is used by CommonSQL for type conversion -- it
;;; should not be output in SQL statements
#+ignore
(format *sql-stream* "~@[~A.~]~A~@[ ~A~]"
- (when qualifier
- (convert-to-db-default-case (sql-escape qualifier) database))
- (sql-escape (convert-to-db-default-case name database))
- (when type
- (convert-to-db-default-case (symbol-name type) database)))
+ (when qualifier
+ (convert-to-db-default-case (sql-escape qualifier) database))
+ (sql-escape (convert-to-db-default-case name database))
+ (when type
+ (convert-to-db-default-case (symbol-name type) database)))
(format *sql-stream* "~@[~A.~]~A"
- (when qualifier
- (typecase qualifier
+ (when qualifier
+ (typecase qualifier
(string (format nil "~s" qualifier))
- (t (convert-to-db-default-case (sql-escape qualifier)
+ (t (convert-to-db-default-case (sql-escape qualifier)
database))))
- (sql-escape (convert-to-db-default-case name database))))
+ (sql-escape (convert-to-db-default-case name database))))
t))
(defmethod output-sql-hash-key ((expr sql-ident-attribute) database)
- (declare (ignore database))
(with-slots (qualifier name type)
- expr
- (list 'sql-ident-attribute qualifier name type)))
+ expr
+ (list (and database (database-underlying-type database))
+ 'sql-ident-attribute qualifier name type)))
;; For SQL Identifiers for tables
+
(defclass sql-ident-table (sql-ident)
((alias
:initarg :table-alias :initform nil))
`(make-instance 'sql-ident-table :name ',name :table-alias ',alias)))
(defmethod output-sql ((expr sql-ident-table) database)
- (with-slots (name alias)
- expr
- (if (null alias)
- (write-string (sql-escape (convert-to-db-default-case (symbol-name name) database)) *sql-stream*)
- (progn
- (write-string (sql-escape (convert-to-db-default-case (symbol-name name) database)) *sql-stream*)
- (write-char #\Space *sql-stream*)
- (format *sql-stream* "~s" alias))))
+ (with-slots (name alias) expr
+ (let ((namestr (if (symbolp name)
+ (symbol-name name)
+ name)))
+ (if (null alias)
+ (write-string
+ (sql-escape (convert-to-db-default-case namestr database))
+ *sql-stream*)
+ (progn
+ (write-string
+ (sql-escape (convert-to-db-default-case namestr database))
+ *sql-stream*)
+ (write-char #\Space *sql-stream*)
+ (format *sql-stream* "~s" alias)))))
t)
-#|
-(defmethod database-output-sql ((self duration) database)
- (declare (ignore database))
- (format nil "'~a'" (duration-timestring self)))
-
-(defmethod database-output-sql ((self money) database)
- (database-output-sql (slot-value self 'odcl::units) database))
-|#
-
-
(defmethod output-sql-hash-key ((expr sql-ident-table) database)
- (declare (ignore database))
(with-slots (name alias)
- expr
- (list 'sql-ident-table name alias)))
+ expr
+ (list (and database (database-underlying-type database))
+ 'sql-ident-table name alias)))
(defclass sql-relational-exp (%sql-expression)
((operator
:initform nil))
(:documentation "An SQL relational expression."))
+(defmethod make-load-form ((self sql-relational-exp) &optional environment)
+ (make-load-form-saving-slots self
+ :slot-names '(operator sub-expressions)
+ :environment environment))
+
(defmethod collect-table-refs ((sql sql-relational-exp))
(let ((tabs nil))
(dolist (exp (slot-value sql 'sub-expressions))
(defclass sql-upcase-like (sql-relational-exp)
()
(:documentation "An SQL 'like' that upcases its arguments."))
-
-;; Write SQL for relational operators (like 'AND' and 'OR').
-;; should do arity checking of subexpressions
-
+
(defmethod output-sql ((expr sql-upcase-like) database)
(flet ((write-term (term)
(write-string "upper(" *sql-stream*)
(:documentation "An SQL typecast expression."))
(defmethod output-sql ((expr sql-typecast-exp) database)
- (database-output-sql expr database))
-
-(defmethod database-output-sql ((expr sql-typecast-exp) database)
(with-slots (components)
expr
(output-sql components database)))
-
(defmethod collect-table-refs ((sql sql-typecast-exp))
(when (slot-value sql 'components)
(collect-table-refs (slot-value sql 'components))))
(defmethod collect-table-refs ((sql sql-function-exp))
(let ((tabs nil))
- (dolist (exp (slot-value sql 'components))
+ (dolist (exp (slot-value sql 'args))
(let ((refs (collect-table-refs exp)))
(if refs (setf tabs (append refs tabs)))))
(remove-duplicates tabs
(defclass sql-between-exp (sql-function-exp)
- ()
+ ()
(:documentation "An SQL between expression."))
(defmethod output-sql ((expr sql-between-exp) database)
- (with-slots (name args)
- expr
+ (with-slots (args)
+ expr
(output-sql (first args) database)
(write-string " BETWEEN " *sql-stream*)
(output-sql (second args) database)
(output-sql (third args) database))
t)
-(defclass sql-query-modifier-exp (%sql-expression)
+(defclass sql-query-modifier-exp (%sql-expression)
((modifier :initarg :modifier :initform nil)
(components :initarg :components :initform nil))
(:documentation "An SQL query modifier expression."))
(output-sql modifier database)
(write-string " " *sql-stream*)
(output-sql (car components) database)
- (when components
- (mapc #'(lambda (comp)
- (write-string ", " *sql-stream*)
- (output-sql comp database))
- (cdr components))))
+ (when components
+ (mapc #'(lambda (comp)
+ (write-string ", " *sql-stream*)
+ (output-sql comp database))
+ (cdr components))))
t)
(defclass sql-set-exp (%sql-expression)
(find-class arg nil)))
target-args))))
(multiple-value-bind (selections arglist)
- (query-get-selections args)
- (if (select-objects selections)
- (destructuring-bind (&key flatp refresh &allow-other-keys) arglist
- (make-instance 'sql-object-query :objects selections
- :flatp flatp :refresh refresh
- :exp arglist))
- (destructuring-bind (&key all flatp set-operation distinct from where
- group-by having order-by
- offset limit inner-join on &allow-other-keys)
- arglist
- (if (null selections)
- (error "No target columns supplied to select statement."))
- (if (null from)
- (error "No source tables supplied to select statement."))
- (make-instance 'sql-query :selections selections
- :all all :flatp flatp :set-operation set-operation
- :distinct distinct :from from :where where
- :limit limit :offset offset
- :group-by group-by :having having :order-by order-by
- :inner-join inner-join :on on))))))
+ (query-get-selections args)
+ (if (select-objects selections)
+ (destructuring-bind (&key flatp refresh &allow-other-keys) arglist
+ (make-instance 'sql-object-query :objects selections
+ :flatp flatp :refresh refresh
+ :exp arglist))
+ (destructuring-bind (&key all flatp set-operation distinct from where
+ group-by having order-by
+ offset limit inner-join on &allow-other-keys)
+ arglist
+ (if (null selections)
+ (error "No target columns supplied to select statement."))
+ (if (null from)
+ (error "No source tables supplied to select statement."))
+ (make-instance 'sql-query :selections selections
+ :all all :flatp flatp :set-operation set-operation
+ :distinct distinct :from from :where where
+ :limit limit :offset offset
+ :group-by group-by :having having :order-by order-by
+ :inner-join inner-join :on on))))))
(defmethod output-sql ((query sql-query) database)
(with-slots (distinct selections from where group-by having order-by
- limit offset inner-join on all set-operation)
+ limit offset inner-join on all set-operation)
query
(when *in-subselect*
(write-string "(" *sql-stream*))
(write-string "SELECT " *sql-stream*)
- (when all
+ (when all
(write-string "ALL " *sql-stream*))
(when (and distinct (not all))
(write-string "DISTINCT " *sql-stream*)
(output-sql (apply #'vector selections) database)
(when from
(write-string " FROM " *sql-stream*)
- (flet ((ident-table-equal (a b)
+ (flet ((ident-table-equal (a b)
(and (if (and (eql (type-of a) 'sql-ident-table)
(eql (type-of b) 'sql-ident-table))
(string-equal (slot-value a 'alias)
(slot-value b 'alias))
t)
- (string-equal (symbol-name (slot-value a 'name))
- (symbol-name (slot-value b 'name))))))
- (typecase from
- (list (output-sql (apply #'vector
- (remove-duplicates from
+ (string-equal (sql-escape (slot-value a 'name))
+ (sql-escape (slot-value b 'name))))))
+ (typecase from
+ (list (output-sql (apply #'vector
+ (remove-duplicates from
:test #'ident-table-equal))
database))
(string (write-string from *sql-stream*))
- (t (output-sql from database)))))
+ (t (let ((*in-subselect* t))
+ (output-sql from database))))))
(when inner-join
(write-string " INNER JOIN " *sql-stream*)
(output-sql inner-join database))
(output-sql where database)))
(when group-by
(write-string " GROUP BY " *sql-stream*)
- (output-sql group-by database))
+ (if (listp group-by)
+ (do ((order group-by (cdr order)))
+ ((null order))
+ (let ((item (car order)))
+ (typecase item
+ (cons
+ (output-sql (car item) database)
+ (format *sql-stream* " ~A" (cadr item)))
+ (t
+ (output-sql item database)))
+ (when (cdr order)
+ (write-char #\, *sql-stream*))))
+ (output-sql group-by database)))
(when having
(write-string " HAVING " *sql-stream*)
(output-sql having database))
(do ((order order-by (cdr order)))
((null order))
(let ((item (car order)))
- (typecase item
- (cons
+ (typecase item
+ (cons
(output-sql (car item) database)
(format *sql-stream* " ~A" (cadr item)))
- (t
+ (t
(output-sql item database)))
(when (cdr order)
(write-char #\, *sql-stream*))))
(output-sql offset database))
(when *in-subselect*
(write-string ")" *sql-stream*))
- (when set-operation
+ (when set-operation
(write-char #\Space *sql-stream*)
(output-sql set-operation database)))
t)
(with-slots (into attributes values query)
ins
(write-string "INSERT INTO " *sql-stream*)
- (output-sql
+ (output-sql
(typecase into
(string (sql-expression :attribute into))
- (t into))
+ (t into))
database)
(when attributes
(write-char #\Space *sql-stream*)
stmt
(write-string "DELETE FROM " *sql-stream*)
(typecase from
- (symbol (write-string (sql-escape from) *sql-stream*))
+ ((or symbol string) (write-string (sql-escape from) *sql-stream*))
(t (output-sql from database)))
(when where
(write-string " WHERE " *sql-stream*)
(write-char #\Space *sql-stream*)
(write-string
(if (stringp db-type) db-type ; override definition
- (database-get-type-specifier (car type) (cdr type) database
- (database-underlying-type database)))
+ (database-get-type-specifier (car type) (cdr type) database
+ (database-underlying-type database)))
*sql-stream*)
- (let ((constraints (database-constraint-statement
+ (let ((constraints (database-constraint-statement
(if (and db-type (symbolp db-type))
(cons db-type constraints)
constraints)
(write-string (car modifier) *sql-stream*)))
(write-char #\) *sql-stream*)
(when (and (eq :mysql (database-underlying-type database))
- transactions
- (db-type-transaction-capable? :mysql database))
- (write-string " Type=InnoDB" *sql-stream*))))
+ transactions
+ (db-type-transaction-capable? :mysql database))
+ (write-string " Type=InnoDB" *sql-stream*))))
t)
;;
-;; Column constraint types
+;; DATABASE-OUTPUT-SQL
;;
+
+(defmethod database-output-sql ((str string) database)
+ (declare (optimize (speed 3) (safety 1)
+ #+cmu (extensions:inhibit-warnings 3)))
+ (let ((len (length str)))
+ (declare (type fixnum len))
+ (cond ((zerop len)
+ +empty-string+)
+ ((and (null (position #\' str))
+ (null (position #\\ str)))
+ (concatenate 'string "'" str "'"))
+ (t
+ (let ((buf (make-string (+ (* len 2) 2) :initial-element #\')))
+ (declare (simple-string buf))
+ (do* ((i 0 (incf i))
+ (j 1 (incf j)))
+ ((= i len) (subseq buf 0 (1+ j)))
+ (declare (type fixnum i j))
+ (let ((char (aref str i)))
+ (declare (character char))
+ (cond ((char= char #\')
+ (setf (aref buf j) #\')
+ (incf j)
+ (setf (aref buf j) #\'))
+ ((and (char= char #\\)
+ ;; MTP: only escape backslash with pgsql/mysql
+ (member (database-underlying-type database)
+ '(:postgresql :mysql)
+ :test #'eq))
+ (setf (aref buf j) #\\)
+ (incf j)
+ (setf (aref buf j) #\\))
+ (t
+ (setf (aref buf j) char))))))))))
+
+(let ((keyword-package (symbol-package :foo)))
+ (defmethod database-output-sql ((sym symbol) database)
+ (if (null sym)
+ +null-string+
+ (convert-to-db-default-case
+ (if (equal (symbol-package sym) keyword-package)
+ (concatenate 'string "'" (string sym) "'")
+ (symbol-name sym))
+ database))))
+
+(defmethod database-output-sql ((tee (eql t)) database)
+ (if database
+ (let ((val (database-output-sql-as-type 'boolean t database (database-type database))))
+ (when val
+ (typecase val
+ (string (format nil "'~A'" val))
+ (integer (format nil "~A" val)))))
+ "'Y'"))
+
+#+nil(defmethod database-output-sql ((tee (eql t)) database)
+ (declare (ignore database))
+ "'Y'")
+
+(defmethod database-output-sql ((num number) database)
+ (declare (ignore database))
+ (number-to-sql-string num))
+
+(defmethod database-output-sql ((arg list) database)
+ (if (null arg)
+ +null-string+
+ (format nil "(~{~A~^,~})" (mapcar #'(lambda (val)
+ (sql-output val database))
+ arg))))
+
+(defmethod database-output-sql ((arg vector) database)
+ (format nil "~{~A~^,~}" (map 'list #'(lambda (val)
+ (sql-output val database))
+ arg)))
+
+(defmethod output-sql-hash-key ((arg vector) database)
+ (list 'vector (map 'list (lambda (arg)
+ (or (output-sql-hash-key arg database)
+ (return-from output-sql-hash-key nil)))
+ arg)))
+
+(defmethod database-output-sql ((self wall-time) database)
+ (declare (ignore database))
+ (db-timestring self))
+
+(defmethod database-output-sql ((self date) database)
+ (declare (ignore database))
+ (db-datestring self))
+
+(defmethod database-output-sql ((self duration) database)
+ (declare (ignore database))
+ (format nil "'~a'" (duration-timestring self)))
+
+#+ignore
+(defmethod database-output-sql ((self money) database)
+ (database-output-sql (slot-value self 'odcl::units) database))
+
+(defmethod database-output-sql (thing database)
+ (if (or (null thing)
+ (eq 'null thing))
+ +null-string+
+ (error 'sql-user-error
+ :message
+ (format nil
+ "No type conversion to SQL for ~A is defined for DB ~A."
+ (type-of thing) (type-of database)))))
+
+
+;;
+;; Column constraint types and conversion to SQL
+;;
+
(defparameter *constraint-types*
- (list
- (cons (symbol-name-default-case "NOT-NULL") "NOT NULL")
+ (list
+ (cons (symbol-name-default-case "NOT-NULL") "NOT NULL")
(cons (symbol-name-default-case "PRIMARY-KEY") "PRIMARY KEY")
- (cons (symbol-name-default-case "NOT") "NOT")
- (cons (symbol-name-default-case "NULL") "NULL")
- (cons (symbol-name-default-case "PRIMARY") "PRIMARY")
+ (cons (symbol-name-default-case "NOT") "NOT")
+ (cons (symbol-name-default-case "NULL") "NULL")
+ (cons (symbol-name-default-case "PRIMARY") "PRIMARY")
(cons (symbol-name-default-case "KEY") "KEY")
- (cons (symbol-name-default-case "UNSIGNED") "UNSIGNED")
- (cons (symbol-name-default-case "ZEROFILL") "ZEROFILL")
+ (cons (symbol-name-default-case "UNSIGNED") "UNSIGNED")
+ (cons (symbol-name-default-case "ZEROFILL") "ZEROFILL")
(cons (symbol-name-default-case "AUTO-INCREMENT") "AUTO_INCREMENT")
(cons (symbol-name-default-case "UNIQUE") "UNIQUE")))
-;;
-;; Convert type spec to sql syntax
-;;
-
(defmethod database-constraint-statement (constraint-list database)
(declare (ignore database))
(make-constraints-description constraint-list))
-
+
(defun make-constraints-description (constraint-list)
(if constraint-list
(let ((string ""))
(if (null output)
(error 'sql-user-error
:message (format nil "unsupported column constraint '~A'"
- constraint))
+ constraint))
(setq string (concatenate 'string string (cdr output))))
(if (< 1 (length constraint))
(setq string (concatenate 'string string " "))))))))
projects / clsql.git / blobdiff