+;; Table and attribute introspection
+
+(defmethod database-list-tables ((database mysql-database) &key (owner nil))
+ (declare (ignore owner))
+ (remove-if #'(lambda (s)
+ (and (>= (length s) 11)
+ (string= (subseq s 0 11) "_clsql_seq_")))
+ (mapcar #'car (database-query "SHOW TABLES" database nil))))
+
+;; MySQL 4.1 does not support views
+(defmethod database-list-views ((database mysql-database)
+ &key (owner nil))
+ (declare (ignore owner))
+ nil)
+
+(defmethod database-list-indexes ((database mysql-database)
+ &key (owner nil))
+ (let ((result '()))
+ (dolist (table (database-list-tables database :owner owner) result)
+ (mapc #'(lambda (index) (push (nth 2 index) result))
+ (database-query
+ (format nil "SHOW INDEX FROM ~A" (string-upcase table))
+ database nil)))))
+
+(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)))
+
+(defmethod database-attribute-type (attribute (table string)
+ (database mysql-database)
+ &key (owner nil))
+ (declare (ignore owner))
+ (let ((result
+ (mapcar #'cadr
+ (database-query
+ (format nil
+ "SHOW COLUMNS FROM ~A LIKE '~A'" table attribute)
+ database nil))))
+ (let* ((str (car result))
+ (end-str (position #\( str))
+ (substr (subseq str 0 end-str)))
+ (if substr
+ (intern (string-upcase substr) :keyword) nil))))
+
+;;; 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= (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))
+ (mapcar #'(lambda (s) (%table-name-to-sequence-name (car s)))
+ (database-query "SHOW TABLES LIKE '%clsql_seq%'"
+ database 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))
+ (declare (ignore sequence-name)))
+
+(defmethod database-create (connection-spec (type (eql :mysql)))
+ (destructuring-bind (host name user password) connection-spec
+ (multiple-value-bind (output status)
+ (clsql-base-sys:command-output "mysqladmin create -u~A -p~A -h~A ~A"
+ user password
+ (if host host "localhost")
+ name)
+ (if (or (not (eql 0 status))
+ (and (search "failed" output) (search "error" output)))
+ (error 'clsql-access-error
+ :connection-spec connection-spec
+ :database-type type
+ :error
+ (format nil "database-create failed: ~A" output))
+ t))))
+
+(defmethod database-destroy (connection-spec (type (eql :mysql)))
+ (destructuring-bind (host name user password) connection-spec
+ (multiple-value-bind (output status)
+ (clsql-base-sys:command-output "mysqladmin drop -f -u~A -p~A -h~A ~A"
+ user password
+ (if host host "localhost")
+ name)
+ (if (or (not (eql 0 status))
+ (and (search "failed" output) (search "error" output)))
+ (error 'clsql-access-error
+ :connection-spec connection-spec
+ :database-type type
+ :error
+ (format nil "database-destroy failed: ~A" output))
+ t))))
+
+(defmethod database-probe (connection-spec (type (eql :mysql)))
+ (destructuring-bind (host name user password) connection-spec
+ (let ((database (database-connect (list host "mysql" user password) type)))
+ (unwind-protect
+ (when
+ (find name (database-query "select db from db"
+ database :auto)
+ :key #'car :test #'string-equal)
+ t)
+ (database-disconnect database)))))
+
+