1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
5 ;;;; Name: mysql-sql.cl
6 ;;;; Purpose: High-level MySQL interface using UFFI
7 ;;;; Programmers: Kevin M. Rosenberg based on
8 ;;;; Original code by Pierre R. Mai
9 ;;;; Date Started: Feb 2002
11 ;;;; $Id: mysql-sql.cl,v 1.22 2002/05/27 17:19:30 kevin Exp $
13 ;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
14 ;;;; and Copyright (c) 1999-2001 by Pierre R. Mai
16 ;;;; CLSQL users are granted the rights to distribute and use this software
17 ;;;; as governed by the terms of the Lisp Lesser GNU Public License
18 ;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
19 ;;;; *************************************************************************
21 (declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
23 ;;;; Modified by Kevin Rosenberg, Feb 20002
24 ;;;; -- Added support for Allegro CL and Lispworks using UFFI layer
25 ;;;; -- Changed database-connect to use mysql-real-connect. This way,
26 ;;;; can avoid using double (unwind-protect)
27 ;;;; -- Changed database-connect to have MySQL library allocate space
28 ;;;; for MYSQL structure. This will make the code more robust in
29 ;;;; the event that MySQL library changes the size of the mysql-mysql
33 ;;;; Added field types
35 (defpackage :clsql-mysql
36 (:use :common-lisp :clsql-base-sys :mysql :clsql-uffi)
37 (:export #:mysql-database)
38 (:documentation "This is the CLSQL interface to MySQL."))
40 (in-package :clsql-mysql)
42 ;;; Field conversion functions
44 (defun make-type-list-for-auto (num-fields res-ptr)
46 #+ignore (field-vec (mysql-fetch-fields res-ptr)))
47 (dotimes (i num-fields)
49 (let* ( (field (mysql-fetch-field-direct res-ptr i))
50 #+ignore (field (uffi:deref-array field-vec 'mysql-field-vector i))
51 (type (uffi:get-slot-value field 'mysql-field 'type)))
54 ((#.mysql-field-types#tiny
55 #.mysql-field-types#short
56 #.mysql-field-types#int24
57 #.mysql-field-types#long)
59 (#.mysql-field-types#longlong
61 ((#.mysql-field-types#double
62 #.mysql-field-types#float
63 #.mysql-field-types#decimal)
68 (nreverse new-types)))
70 (defun canonicalize-types (types num-fields res-ptr)
73 (let ((auto-list (make-type-list-for-auto num-fields res-ptr)))
76 (canonicalize-type-list types auto-list))
82 (defmethod database-initialize-database-type ((database-type (eql :mysql)))
85 (uffi:def-type mysql-mysql-ptr-def (* mysql-mysql))
86 (uffi:def-type mysql-row-def mysql-row)
87 (uffi:def-type mysql-mysql-res-ptr-def (* mysql-mysql-res))
89 (defclass mysql-database (database)
90 ((mysql-ptr :accessor database-mysql-ptr :initarg :mysql-ptr
91 :type mysql-mysql-ptr-def)))
93 (defmethod database-type ((database mysql-database))
96 (defmethod database-name-from-spec (connection-spec (database-type (eql :mysql)))
97 (check-connection-spec connection-spec database-type (host db user password))
98 (destructuring-bind (host db user password) connection-spec
99 (declare (ignore password))
100 (concatenate 'string host "/" db "/" user)))
102 (defmethod database-connect (connection-spec (database-type (eql :mysql)))
103 (check-connection-spec connection-spec database-type (host db user password))
104 (destructuring-bind (host db user password) connection-spec
105 (let ((mysql-ptr (mysql-init (uffi:make-null-pointer 'mysql-mysql)))
107 (if (uffi:null-pointer-p mysql-ptr)
108 (error 'clsql-connect-error
109 :database-type database-type
110 :connection-spec connection-spec
111 :errno (mysql-errno mysql-ptr)
112 :error (mysql-error-string mysql-ptr))
113 (uffi:with-cstrings ((host-native host)
115 (password-native password)
117 (socket-native socket))
118 (let ((error-occurred nil))
120 (if (uffi:null-pointer-p
122 mysql-ptr host-native user-native password-native
123 db-native 0 socket-native 0))
125 (setq error-occurred t)
126 (error 'clsql-connect-error
127 :database-type database-type
128 :connection-spec connection-spec
129 :errno (mysql-errno mysql-ptr)
130 :error (mysql-error-string mysql-ptr)))
131 (make-instance 'mysql-database
132 :name (database-name-from-spec connection-spec
134 :connection-spec connection-spec
135 :mysql-ptr mysql-ptr))
136 (when error-occurred (mysql-close mysql-ptr)))))))))
139 (defmethod database-disconnect ((database mysql-database))
140 (mysql-close (database-mysql-ptr database))
141 (setf (database-mysql-ptr database) nil)
145 (defmethod database-query (query-expression (database mysql-database)
147 (with-slots (mysql-ptr) database
148 (uffi:with-cstring (query-native query-expression)
149 (if (zerop (mysql-query mysql-ptr query-native))
150 (let ((res-ptr (mysql-use-result mysql-ptr)))
152 (let ((num-fields (mysql-num-fields res-ptr)))
153 (setq types (canonicalize-types
157 (loop for row = (mysql-fetch-row res-ptr)
158 until (uffi:null-pointer-p row)
160 (loop for i from 0 below num-fields
163 (uffi:deref-array row 'mysql-row i)
165 (mysql-free-result res-ptr)))
166 (error 'clsql-sql-error
168 :expression query-expression
169 :errno (mysql-errno mysql-ptr)
170 :error (mysql-error-string mysql-ptr))))
171 (error 'clsql-sql-error
173 :expression query-expression
174 :errno (mysql-errno mysql-ptr)
175 :error (mysql-error-string mysql-ptr))))))
177 (defmethod database-execute-command (sql-expression (database mysql-database))
178 (uffi:with-cstring (sql-native sql-expression)
179 (let ((mysql-ptr (database-mysql-ptr database)))
180 (declare (type mysql-mysql-ptr-def mysql-ptr))
181 (if (zerop (mysql-query mysql-ptr sql-native))
183 (error 'clsql-sql-error
185 :expression sql-expression
186 :errno (mysql-errno mysql-ptr)
187 :error (mysql-error-string mysql-ptr))))))
189 (defstruct mysql-result-set
190 (res-ptr (uffi:make-null-pointer 'mysql-mysql-res)
191 :type mysql-mysql-res-ptr-def)
193 (num-fields nil :type fixnum)
194 (full-set nil :type boolean))
197 (defmethod database-query-result-set (query-expression
198 (database mysql-database)
200 (uffi:with-cstring (query-native query-expression)
201 (let ((mysql-ptr (database-mysql-ptr database)))
202 (declare (type mysql-mysql-ptr-def mysql-ptr))
203 (if (zerop (mysql-query mysql-ptr query-native))
204 (let ((res-ptr (if full-set
205 (mysql-store-result mysql-ptr)
206 (mysql-use-result mysql-ptr))))
207 (declare (type mysql-mysql-res-ptr-def res-ptr))
208 (if (not (uffi:null-pointer-p res-ptr))
209 (let* ((num-fields (mysql-num-fields res-ptr))
210 (result-set (make-mysql-result-set
212 :num-fields num-fields
221 (mysql-num-rows res-ptr))
224 (error 'clsql-sql-error
226 :expression query-expression
227 :errno (mysql-errno mysql-ptr)
228 :error (mysql-error-string mysql-ptr))))
229 (error 'clsql-sql-error
231 :expression query-expression
232 :errno (mysql-errno mysql-ptr)
233 :error (mysql-error-string mysql-ptr))))))
235 (defmethod database-dump-result-set (result-set (database mysql-database))
236 (mysql-free-result (mysql-result-set-res-ptr result-set))
240 (defmethod database-store-next-row (result-set (database mysql-database) list)
241 (let* ((res-ptr (mysql-result-set-res-ptr result-set))
242 (row (mysql-fetch-row res-ptr))
243 (types (mysql-result-set-types result-set)))
244 (declare (type mysql-mysql-res-ptr-def res-ptr)
245 (type mysql-row-def row))
246 (unless (uffi:null-pointer-p row)
247 (loop for i from 0 below (mysql-result-set-num-fields result-set)
252 (uffi:deref-array row 'mysql-row i)
258 (when (clsql-base-sys:database-type-library-loaded :mysql)
259 (clsql-base-sys:initialize-database-type :database-type :mysql)
260 (pushnew :mysql cl:*features*))