+;; Table and attribute introspection
+
+(defmethod database-list-tables ((database mysql-database) &key (owner nil))
+ (declare (ignore owner))
+ (cond
+ ((eql #\5 (char (database-server-info database) 0))
+ (loop for (name type) in (database-query "SHOW FULL TABLES" database nil nil)
+ when (and (string-equal type "base table")
+ (not (and (>= (length name) 11)
+ (string-equal (subseq name 0 11) "_CLSQL_SEQ_"))))
+ collect name))
+ (t
+ (remove-if #'(lambda (s)
+ (and (>= (length s) 11)
+ (string-equal (subseq s 0 11) "_CLSQL_SEQ_")))
+ (mapcar #'car (database-query "SHOW TABLES" database nil nil))))))
+
+(defmethod database-list-views ((database mysql-database)
+ &key (owner nil))
+ (declare (ignore owner))
+ (cond
+ ((eql #\5 (char (database-server-info database) 0))
+ (loop for (name type) in (database-query "SHOW FULL TABLES" database nil nil)
+ when (string-equal type "view")
+ collect name))
+ (t
+ nil)))
+
+(defmethod database-list-indexes ((database mysql-database)
+ &key (owner nil))
+ (let ((result '()))
+ (dolist (table (database-list-tables database :owner owner) result)
+ (setq result
+ (append (database-list-table-indexes table database :owner owner)
+ result)))))
+
+(defmethod database-list-table-indexes (table (database mysql-database)
+ &key (owner nil))
+ (declare (ignore owner))
+ (do ((results nil)
+ (rows (database-query
+ (format nil "SHOW INDEX FROM ~A" table)
+ database nil nil)
+ (cdr rows)))
+ ((null rows) (nreverse results))
+ (let ((col (nth 2 (car rows))))
+ (unless (find col results :test #'string-equal)
+ (push col results)))))
+
+(defmethod database-list-attributes ((table string) (database mysql-database)
+ &key (owner nil))
+ (declare (ignore owner))
+ (mapcar #'car
+ (database-query
+ (format nil "SHOW COLUMNS FROM ~A" table)
+ database nil nil)))
+
+(defmethod database-attribute-type (attribute (table string)
+ (database mysql-database)
+ &key (owner nil))
+ (declare (ignore owner))
+ (let ((row (car (database-query
+ (format nil
+ "SHOW COLUMNS FROM ~A LIKE '~A'" table attribute)
+ database nil nil))))
+ (let* ((raw-type (second row))
+ (null (third row))
+ (start-length (position #\( raw-type))
+ (type (if start-length
+ (subseq raw-type 0 start-length)
+ raw-type))
+ (length (when start-length
+ (parse-integer (subseq raw-type (1+ start-length))
+ :junk-allowed t))))
+ (when type
+ (values (ensure-keyword type) length nil (if (string-equal null "YES") 1 0))))))
+
+;;; Sequence functions
+
+(defun %sequence-name-to-table (sequence-name)
+ (concatenate 'string "_CLSQL_SEQ_" (sql-escape sequence-name)))
+
+(defun %table-name-to-sequence-name (table-name)
+ (and (>= (length table-name) 11)
+ (string-equal (subseq table-name 0 11) "_CLSQL_SEQ_")
+ (subseq table-name 11)))
+
+(defmethod database-create-sequence (sequence-name
+ (database mysql-database))
+ (let ((table-name (%sequence-name-to-table sequence-name)))
+ (database-execute-command
+ (concatenate 'string "CREATE TABLE " table-name
+ " (id int NOT NULL PRIMARY KEY AUTO_INCREMENT)")
+ database)
+ (database-execute-command
+ (concatenate 'string "INSERT INTO " table-name
+ " VALUES (-1)")
+ database)))
+
+(defmethod database-drop-sequence (sequence-name
+ (database mysql-database))
+ (database-execute-command
+ (concatenate 'string "DROP TABLE " (%sequence-name-to-table sequence-name))
+ database))
+
+(defmethod database-list-sequences ((database mysql-database)
+ &key (owner nil))
+ (declare (ignore owner))
+ (mapcan #'(lambda (s)
+ (let ((sn (%table-name-to-sequence-name (car s))))
+ (and sn (list sn))))
+ (database-query "SHOW TABLES" database nil nil)))
+
+(defmethod database-set-sequence-position (sequence-name
+ (position integer)
+ (database mysql-database))
+ (database-execute-command
+ (format nil "UPDATE ~A SET id=~A" (%sequence-name-to-table sequence-name)
+ position)
+ database)
+ (mysql:mysql-insert-id (clsql-mysql::database-mysql-ptr database)))
+
+(defmethod database-sequence-next (sequence-name (database mysql-database))
+ (without-interrupts
+ (database-execute-command
+ (concatenate 'string "UPDATE " (%sequence-name-to-table sequence-name)
+ " SET id=LAST_INSERT_ID(id+1)")
+ database)
+ (mysql:mysql-insert-id (clsql-mysql::database-mysql-ptr database))))
+
+(defmethod database-sequence-last (sequence-name (database mysql-database))
+ (without-interrupts
+ (caar (database-query
+ (concatenate 'string "SELECT id from "
+ (%sequence-name-to-table sequence-name))
+ database :auto nil))))
+
+(defmethod database-last-auto-increment-id ((database mysql-database) table column)
+ (declare (ignore table column))
+ (car (query "SELECT LAST_INSERT_ID();"
+ :flatp t :field-names nil
+ :database database)))
+
+(defmethod database-create (connection-spec (type (eql :mysql)))
+ (destructuring-bind (host name user password) connection-spec
+ (let ((database (database-connect (list host "" user password)
+ type)))
+ (setf (slot-value database 'clsql-sys::state) :open)
+ (unwind-protect
+ (database-execute-command (format nil "create database ~A" name) database)
+ (database-disconnect database)))))
+
+(defmethod database-destroy (connection-spec (type (eql :mysql)))
+ (destructuring-bind (host name user password) connection-spec
+ (let ((database (database-connect (list host "" user password)
+ type)))
+ (setf (slot-value database 'clsql-sys::state) :open)
+ (unwind-protect
+ (database-execute-command (format nil "drop database ~A" name) database)
+ (database-disconnect database)))))
+
+(defmethod database-probe (connection-spec (type (eql :mysql)))
+ (when (find (second connection-spec) (database-list connection-spec type)
+ :test #'string-equal)
+ t))
+
+(defmethod database-list (connection-spec (type (eql :mysql)))
+ (destructuring-bind (host name user password &optional port options) connection-spec
+ (declare (ignore options))
+ (let ((database (database-connect (list host (or name "mysql")
+ user password port) type)))
+ (unwind-protect
+ (progn
+ (setf (slot-value database 'clsql-sys::state) :open)
+ (mapcar #'car (database-query "show databases" database :auto nil)))
+ (progn
+ (database-disconnect database)
+ (setf (slot-value database 'clsql-sys::state) :closed))))))
+
+
+;;; Prepared statements
+
+(defclass mysql-stmt ()
+ ((database :initarg :database :reader database)
+ (stmt :initarg :stmt :accessor stmt)
+ (input-bind :initarg :input-bind :reader input-bind)
+ (output-bind :initarg :output-bind :reader output-bind)
+ (types :initarg :types :reader types)
+ (result-set :initarg :result-set :reader result-set)
+ (num-fields :initarg :num-fields :reader num-fields)
+ (field-names :initarg :field-names :accessor stmt-field-names)
+ (length-ptr :initarg :length-ptr :reader length-ptr)
+ (is-null-ptr :initarg :is-null-ptr :reader is-null-ptr)
+ (result-types :initarg :result-types :reader result-types)))
+
+(defun clsql-type->mysql-type (type)
+ (cond
+ ((in type :null) mysql-field-types#null)
+ ((in type :int :integer) mysql-field-types#long)
+ ((in type :short) mysql-field-types#short)
+ ((in type :bigint) mysql-field-types#longlong)
+ ((in type :float :double :number) mysql-field-types#double)
+ ((and (consp type) (in (car type) :char :string :varchar)) mysql-field-types#var-string)
+ ((or (eq type :blob) (and (consp type) (in (car type) :blob))) mysql-field-types#var-string)
+ (t
+ (error 'sql-user-error
+ :message
+ (format nil "Unknown clsql type ~A." type)))))
+
+#+mysql-client-v4.1
+(defmethod database-prepare (sql-stmt types (database mysql-database) result-types field-names)
+ (let* ((mysql-ptr (database-mysql-ptr database))
+ (stmt (mysql-stmt-init mysql-ptr)))
+ (when (uffi:null-pointer-p stmt)
+ (error 'sql-database-error
+ :error-id (mysql-errno mysql-ptr)
+ :message (mysql-error-string mysql-ptr)))
+
+ (uffi:with-cstring (native-query sql-stmt)
+ (unless (zerop (mysql-stmt-prepare stmt native-query (uffi:foreign-encoded-octet-count
+ sql-stmt :encoding (encoding database))))
+ (mysql-stmt-close stmt)
+ (error 'sql-database-error
+ :error-id (mysql-errno mysql-ptr)
+ :message (mysql-error-string mysql-ptr))))
+
+ (unless (= (mysql-stmt-param-count stmt) (length types))
+ (mysql-stmt-close stmt)
+ (error 'sql-database-error
+ :message
+ (format nil "Mysql param count (~D) does not match number of types (~D)"
+ (mysql-stmt-param-count stmt) (length types))))
+
+ (let ((rs (mysql-stmt-result-metadata stmt)))
+ (when (uffi:null-pointer-p rs)
+ (warn "mysql_stmt_result_metadata returned NULL")
+ #+nil
+ (mysql-stmt-close stmt)
+ #+nil
+ (error 'sql-database-error
+ :message "mysql_stmt_result_metadata returned NULL"))
+
+ (let ((input-bind (uffi:allocate-foreign-object 'mysql-bind (length types)))
+ (mysql-types (mapcar 'clsql-type->mysql-type types))
+ field-vec num-fields is-null-ptr output-bind length-ptr)
+
+ (print 'a)
+ (dotimes (i (length types))
+ (let* ((binding (uffi:deref-array input-bind '(:array mysql-bind) i)))
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::buffer-type)
+ (nth i mysql-types))
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::buffer-length) 0)))
+
+ (print 'b)
+ (unless (uffi:null-pointer-p rs)
+ (setq field-vec (mysql-fetch-fields rs)
+ num-fields (mysql-num-fields rs)
+ is-null-ptr (uffi:allocate-foreign-object :byte num-fields)
+ output-bind (uffi:allocate-foreign-object 'mysql-bind num-fields)
+ length-ptr (uffi:allocate-foreign-object :unsigned-long num-fields))
+ (dotimes (i num-fields)
+ (declare (fixnum i))
+ (let* ((field (uffi:deref-array field-vec '(:array mysql-field) i))
+ (type (uffi:get-slot-value field 'mysql-field 'type))
+ (binding (uffi:deref-array output-bind '(:array mysql-bind) i)))
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::buffer-type) type)
+
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::buffer-length) 0)
+ #+need-to-allocate-foreign-object-for-this
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::is-null)
+ (+ i (uffi:pointer-address is-null-ptr)))
+ #+need-to-allocate-foreign-object-for-this
+ (setf (uffi:get-slot-value binding 'mysql-bind 'length)
+ (+ (* i 8) (uffi:pointer-address length-ptr)))
+
+ (case type
+ ((#.mysql-field-types#var-string #.mysql-field-types#string
+ #.mysql-field-types#tiny-blob #.mysql-field-types#blob
+ #.mysql-field-types#medium-blob #.mysql-field-types#long-blob)
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::buffer-length) 1024)
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::buffer)
+ (uffi:allocate-foreign-object :unsigned-char 1024)))
+ (#.mysql-field-types#tiny
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::buffer)
+ (uffi:allocate-foreign-object :byte)))
+ (#.mysql-field-types#short
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::buffer)
+ (uffi:allocate-foreign-object :short)))
+ (#.mysql-field-types#long
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::buffer)
+ ;; segfaults if supply :int on amd64
+ (uffi:allocate-foreign-object :long)))
+ #+64bit
+ (#.mysql-field-types#longlong
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::buffer)
+ (uffi:allocate-foreign-object :long)))
+ (#.mysql-field-types#float
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::buffer)
+ (uffi:allocate-foreign-object :float)))
+ (#.mysql-field-types#double
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::buffer)
+ (uffi:allocate-foreign-object :double)))
+ ((#.mysql-field-types#time #.mysql-field-types#date
+ #.mysql-field-types#datetime #.mysql-field-types#timestamp)
+ (uffi:allocate-foreign-object 'mysql-time))
+ (t
+ (error "mysql type ~D not supported." type)))))
+
+ (unless (zerop (mysql-stmt-bind-result stmt output-bind))
+ (mysql-stmt-close stmt)
+ (error 'sql-database-error
+ :error-id (mysql-stmt-errno stmt)
+ :message (uffi:convert-from-cstring
+ (mysql-stmt-error stmt)))))
+
+ (make-instance 'mysql-stmt
+ :database database
+ :stmt stmt
+ :num-fields num-fields
+ :input-bind input-bind
+ :output-bind output-bind
+ :result-set rs
+ :result-types result-types
+ :length-ptr length-ptr
+ :is-null-ptr is-null-ptr
+ :types mysql-types
+ :field-names field-names)))))
+
+#+mysql-client-v4.1
+(defmethod database-bind-parameter ((stmt mysql-stmt) position value)
+ ;; FIXME: will need to allocate bind structure. This should probably be
+ ;; done in C since the API is not mature and may change
+ (let ((binding (uffi:deref-array (input-bind stmt) '(:array mysql-bind) (1- position)))
+ (type (nth (1- position) (types stmt))))
+ (setf (uffi:get-slot-value binding 'mysql-bind 'length) 0)
+ (cond
+ ((null value)
+ (when (is-null-ptr stmt)
+ (setf (uffi:deref-array (is-null-ptr stmt) '(:array :byte) (1- position)) 1)))
+ (t
+ (when (is-null-ptr stmt)
+ (setf (uffi:deref-array (is-null-ptr stmt) '(:array :byte) (1- position)) 0))
+ (case type
+ (#.mysql-field-types#long
+ (setf (uffi:get-slot-value binding 'mysql-bind 'mysql::buffer) value))
+ (t
+ (warn "Unknown input bind type ~D." type))
+ )))))
+
+#+mysql-client-v4.1
+(defmethod database-run-prepared ((stmt mysql-stmt))
+ (print 'a1)
+ (when (input-bind stmt)
+ (unless (zerop (mysql-stmt-bind-param (stmt stmt) (input-bind stmt)))
+ (error 'sql-database-error
+ :error-id (mysql-stmt-errno (stmt stmt))
+ :message (uffi:convert-from-cstring
+ (mysql-stmt-error (stmt stmt))))))
+ (print 'a2)
+ (unless (zerop (mysql-stmt-execute (stmt stmt)))
+ (error 'sql-database-error
+ :error-id (mysql-stmt-errno (stmt stmt))
+ :message (uffi:convert-from-cstring
+ (mysql-stmt-error (stmt stmt)))))
+ (print 'a3)
+ (unless (zerop (mysql-stmt-store-result (stmt stmt)))
+ (error 'sql-database-error
+ :error-id (mysql-stmt-errno (stmt stmt))
+ :message (uffi:convert-from-cstring
+ (mysql-stmt-error (stmt stmt)))))
+ (database-fetch-prepared-rows stmt))
+
+#+mysql-client-v4.1
+(defun database-fetch-prepared-rows (stmt)
+ (do ((rc (mysql-stmt-fetch (stmt stmt)) (mysql-stmt-fetch (stmt stmt)))
+ (num-fields (num-fields stmt))
+ (rows '()))
+ ((not (zerop rc)) (nreverse rows))
+ (push
+ (loop for i from 0 below num-fields
+ collect
+ (let ((is-null
+ (not (zerop (uffi:ensure-char-integer
+ (uffi:deref-array (is-null-ptr stmt) '(:array :byte) i))))))
+ (unless is-null
+ (let* ((bind (uffi:deref-array (output-bind stmt) '(:array mysql-bind) i))
+ (type (uffi:get-slot-value bind 'mysql-bind 'mysql::buffer-type))
+ (buffer (uffi:get-slot-value bind 'mysql-bind 'mysql::buffer)))
+ (case type
+ ((#.mysql-field-types#var-string #.mysql-field-types#string
+ #.mysql-field-types#tiny-blob #.mysql-field-types#blob
+ #.mysql-field-types#medium-blob #.mysql-field-types#long-blob)
+ (uffi:convert-from-foreign-string buffer :encoding (encoding (database stmt))))
+ (#.mysql-field-types#tiny
+ (uffi:ensure-char-integer
+ (uffi:deref-pointer buffer :byte)))
+ (#.mysql-field-types#short
+ (uffi:deref-pointer buffer :short))
+ (#.mysql-field-types#long
+ (uffi:deref-pointer buffer :int))
+ #+64bit
+ (#.mysql-field-types#longlong
+ (uffi:deref-pointer buffer :long))
+ (#.mysql-field-types#float
+ (uffi:deref-pointer buffer :float))
+ (#.mysql-field-types#double
+ (uffi:deref-pointer buffer :double))
+ ((#.mysql-field-types#time #.mysql-field-types#date
+ #.mysql-field-types#datetime #.mysql-field-types#timestamp)
+ (let ((year (uffi:get-slot-value buffer 'mysql-time 'mysql::year))
+ (month (uffi:get-slot-value buffer 'mysql-time 'mysql::month))
+ (day (uffi:get-slot-value buffer 'mysql-time 'mysql::day))
+ (hour (uffi:get-slot-value buffer 'mysql-time 'mysql::hour))
+ (minute (uffi:get-slot-value buffer 'mysql-time 'mysql::minute))
+ (second (uffi:get-slot-value buffer 'mysql-time 'mysql::second)))
+ (db-timestring
+ (make-time :year year :month month :day day :hour hour
+ :minute minute :second second))))
+ (t
+ (list type)))))))
+ rows)))
+
+
+
+
+#+mysql-client-v4.1
+(defmethod database-free-prepared ((stmt mysql-stmt))
+ (with-slots (stmt) stmt
+ (mysql-stmt-close stmt))
+ )
+
+
+;;; Database capabilities
+
+(defmethod db-type-use-column-on-drop-index? ((db-type (eql :mysql)))
+ t)
+
+(defmethod db-type-has-views? ((db-type (eql :mysql)))
+ #+mysql-client-v5 t
+ #-mysql-client-v5 nil)
+
+(defmethod db-type-has-subqueries? ((db-type (eql :mysql)))
+ #+(or mysql-client-v4.1 mysql-client-v5) t
+ #-(or mysql-client-v4.1 mysql-client-v5) nil)
+
+(defmethod db-type-has-boolean-where? ((db-type (eql :mysql)))
+ #+(or mysql-client-v4.1 mysql-client-v5) t
+ #-(or mysql-client-v4.1 mysql-client-v5) nil)
+
+(defmethod db-type-has-union? ((db-type (eql :mysql)))
+ (not (eql (schar mysql::*mysql-client-info* 0) #\3)))
+
+(defmethod db-type-transaction-capable? ((db-type (eql :mysql)) database)
+ (let ((tuple (car (database-query "SHOW VARIABLES LIKE 'HAVE_INNODB'" database :auto nil))))
+ (and tuple (string-equal "YES" (second tuple)))))
+
+(defmethod db-type-has-prepared-stmt? ((db-type (eql :mysql)))
+ #+(or mysql-client-v4.1 mysql-client-v5) t
+ #-(or mysql-client-v4.1 mysql-client-v5) nil)
+
+(defmethod db-type-has-auto-increment? ((db-type (eql :mysql)))
+ t)
+
+(when (clsql-sys:database-type-library-loaded :mysql)
+ (clsql-sys:initialize-database-type :database-type :mysql))