;;;;
;;;; Name: mysql-sql.lisp
;;;; Purpose: High-level MySQL interface using UFFI
-;;;; Programmers: Kevin M. Rosenberg based on
-;;;; Original code by Pierre R. Mai
;;;; Date Started: Feb 2002
;;;;
;;;; $Id$
;;;;
-;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
-;;;; and Copyright (c) 1999-2001 by Pierre R. Mai
-;;;;
;;;; CLSQL users are granted the rights to distribute and use this software
;;;; as governed by the terms of the Lisp Lesser GNU Public License
;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
;;;; *************************************************************************
-(eval-when (:compile-toplevel)
- (declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0))))
-
-;;;; Modified by Kevin Rosenberg, Feb 20002
-;;;; -- Added support for Allegro CL and Lispworks using UFFI layer
-;;;; -- Changed database-connect to use mysql-real-connect. This way,
-;;;; can avoid using double (unwind-protect)
-;;;; -- Changed database-connect to have MySQL library allocate space
-;;;; for MYSQL structure. This will make the code more robust in
-;;;; the event that MySQL library changes the size of the mysql-mysql
-;;;; structure.
-;;;;
-;;;; Mar 2002
-;;;; Added field types
-
(defpackage #:clsql-mysql
(:use #:common-lisp #:clsql-base-sys #:mysql #:clsql-uffi)
(:export #:mysql-database)
list)))
+;; Table and attribute introspection
+
+(defmethod database-list-tables ((database mysql-database) &key (owner nil))
+ (declare (ignore owner))
+ (remove-if #'(lambda (s)
+ (and (>= (length s) 10)
+ (string= (subseq s 0 10) "_usql_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 "_usql_seq_" (sql-escape sequence-name)))
+
+(defun %table-name-to-sequence-name (table-name)
+ (and (>= (length table-name) 10)
+ (string= (subseq table-name 0 10) "_usql_seq_")
+ (subseq table-name 10)))
+
+(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 '%usql_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))
+ (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)))
+
+;; Functions depending upon high-level CommonSQL classes/functions
+#|
+(defmethod database-output-sql ((expr clsql-sys::sql-typecast-exp)
+ (database mysql-database))
+ (with-slots (clsql-sys::modifier clsql-sys::components)
+ expr
+ (if clsql-sys::modifier
+ (progn
+ (clsql-sys::output-sql clsql-sys::components database)
+ (write-char #\: sql-sys::*sql-stream*)
+ (write-char #\: sql-sys::*sql-stream*)
+ (write-string (symbol-name clsql-sys::modifier)
+ clsql-sys::*sql-stream*)))))
+
+(defmethod database-output-sql-as-type ((type (eql 'integer)) val
+ (database mysql-database))
+ ;; typecast it so it uses the indexes
+ (when val
+ (make-instance 'clsql-sys::sql-typecast-exp
+ :modifier 'int8
+ :components val)))
+|#
+
(when (clsql-base-sys:database-type-library-loaded :mysql)
(clsql-base-sys:initialize-database-type :database-type :mysql))
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