1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
5 ;;;; Name: mysql-usql.cl
6 ;;;; Purpose: MySQL interface functions to support UncommonSQL
7 ;;;; Programmers: Kevin M. Rosenberg and onShore Development Inc
8 ;;;; Date Started: Mar 2002
12 ;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
13 ;;;; and by onShore Development Inc.
15 ;;;; CLSQL users are granted the rights to distribute and use this software
16 ;;;; as governed by the terms of the Lisp Lesser GNU Public License
17 ;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
18 ;;;; *************************************************************************
20 (in-package #:clsql-mysql)
22 ;; Table and attribute introspection
24 (defmethod database-list-tables ((database mysql-database) &key (owner nil))
25 (declare (ignore owner))
26 (remove-if #'(lambda (s)
27 (and (>= (length s) 10)
28 (string= (subseq s 0 10) "_usql_seq_")))
29 (mapcar #'car (database-query "SHOW TABLES" database nil))))
31 ;; MySQL 4.1 does not support views
32 (defmethod database-list-views ((database mysql-database)
34 (declare (ignore owner))
37 (defmethod database-list-indexes ((database mysql-database)
40 (dolist (table (database-list-tables database :owner owner) result)
41 (mapc #'(lambda (index) (push (nth 2 index) result))
43 (format nil "SHOW INDEX FROM ~A" (string-upcase table))
46 (defmethod database-list-attributes ((table string) (database mysql-database)
48 (declare (ignore owner))
51 (format nil "SHOW COLUMNS FROM ~A" table)
54 (defmethod database-attribute-type (attribute (table string)
55 (database mysql-database)
57 (declare (ignore owner))
62 "SHOW COLUMNS FROM ~A LIKE '~A'" table attribute)
64 (let* ((str (car result))
65 (end-str (position #\( str))
66 (substr (subseq str 0 end-str)))
68 (intern (string-upcase substr) :keyword) nil))))
70 ;;; Sequence functions
72 (defun %sequence-name-to-table (sequence-name)
73 (concatenate 'string "_usql_seq_" (sql-escape sequence-name)))
75 (defun %table-name-to-sequence-name (table-name)
76 (and (>= (length table-name) 10)
77 (string= (subseq table-name 0 10) "_usql_seq_")
78 (subseq table-name 10)))
80 (defmethod database-create-sequence (sequence-name
81 (database mysql-database))
82 (let ((table-name (%sequence-name-to-table sequence-name)))
83 (database-execute-command
84 (concatenate 'string "CREATE TABLE " table-name
85 " (id int NOT NULL PRIMARY KEY AUTO_INCREMENT)")
87 (database-execute-command
88 (concatenate 'string "INSERT INTO " table-name
92 (defmethod database-drop-sequence (sequence-name
93 (database mysql-database))
94 (database-execute-command
95 (concatenate 'string "DROP TABLE " (%sequence-name-to-table sequence-name))
98 (defmethod database-list-sequences ((database mysql-database)
100 (declare (ignore owner))
101 (mapcar #'(lambda (s) (%table-name-to-sequence-name (car s)))
102 (database-query "SHOW TABLES LIKE '%usql_seq%'"
105 (defmethod database-set-sequence-position (sequence-name
107 (database mysql-database))
108 (database-execute-command
109 (format nil "UPDATE ~A SET id=~A" (%sequence-name-to-table sequence-name)
112 (mysql:mysql-insert-id (clsql-mysql::database-mysql-ptr database)))
114 (defmethod database-sequence-next (sequence-name (database mysql-database))
115 (database-execute-command
116 (concatenate 'string "UPDATE " (%sequence-name-to-table sequence-name)
117 " SET id=LAST_INSERT_ID(id+1)")
119 (mysql:mysql-insert-id (clsql-mysql::database-mysql-ptr database)))
121 (defmethod database-sequence-last (sequence-name (database mysql-database))
122 (declare (ignore sequence-name)))
124 ;; Misc USQL functions
128 (defmethod database-output-sql ((expr clsql-sys::sql-typecast-exp)
129 (database mysql-database))
130 (with-slots (clsql-sys::modifier clsql-sys::components)
132 (if clsql-sys::modifier
134 (clsql-sys::output-sql clsql-sys::components database)
135 (write-char #\: sql-sys::*sql-stream*)
136 (write-char #\: sql-sys::*sql-stream*)
137 (write-string (symbol-name clsql-sys::modifier)
138 clsql-sys::*sql-stream*)))))
141 (defmethod database-output-sql-as-type ((type (eql 'integer)) val
142 (database mysql-database))
143 ;; typecast it so it uses the indexes
145 (make-instance 'clsql-sys::sql-typecast-exp