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 1.17 2002/03/29 14:03:27 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-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))
83 (defmethod database-initialize-database-type ((database-type (eql :mysql)))
86 (uffi:def-type mysql-mysql-ptr-def (* mysql-mysql))
87 (uffi:def-type mysql-row-def mysql-row)
88 (uffi:def-type mysql-mysql-res-ptr-def (* mysql-mysql-res))
90 (defclass mysql-database (database)
91 ((mysql-ptr :accessor database-mysql-ptr :initarg :mysql-ptr
92 :type mysql-mysql-ptr-def)))
94 (defmethod database-name-from-spec (connection-spec (database-type (eql :mysql)))
95 (check-connection-spec connection-spec database-type (host db user password))
96 (destructuring-bind (host db user password) connection-spec
97 (declare (ignore password))
98 (concatenate 'string host "/" db "/" user)))
101 (defmethod database-connect (connection-spec (database-type (eql :mysql)))
102 (check-connection-spec connection-spec database-type (host db user password))
103 (destructuring-bind (host db user password) connection-spec
104 (let ((mysql-ptr (mysql-init (uffi:make-null-pointer 'mysql-mysql)))
106 (if (uffi:null-pointer-p mysql-ptr)
107 (error 'clsql-connect-error
108 :database-type database-type
109 :connection-spec connection-spec
110 :errno (mysql-errno mysql-ptr)
111 :error (mysql-error-string mysql-ptr))
112 (uffi:with-cstrings ((host-native host)
114 (password-native password)
116 (socket-native socket))
117 (let ((error-occurred nil))
119 (if (uffi:null-pointer-p
121 mysql-ptr host-native user-native password-native
122 db-native 0 socket-native 0))
124 (setq error-occurred t)
125 (error 'clsql-connect-error
126 :database-type database-type
127 :connection-spec connection-spec
128 :errno (mysql-errno mysql-ptr)
129 :error (mysql-error-string mysql-ptr)))
130 (make-instance 'mysql-database
131 :name (database-name-from-spec connection-spec
133 :mysql-ptr mysql-ptr))
134 (when error-occurred (mysql-close mysql-ptr)))))))))
137 (defmethod database-disconnect ((database mysql-database))
138 (mysql-close (database-mysql-ptr database))
139 (setf (database-mysql-ptr database) nil)
143 (defmethod database-query (query-expression (database mysql-database)
145 (with-slots (mysql-ptr) database
146 (uffi:with-cstring (query-native query-expression)
147 (if (zerop (mysql-query mysql-ptr query-native))
148 (let ((res-ptr (mysql-use-result mysql-ptr)))
150 (let ((num-fields (mysql-num-fields res-ptr)))
151 (setq types (canonicalize-types
155 (loop for row = (mysql-fetch-row res-ptr)
156 until (uffi:null-pointer-p row)
158 (loop for i from 0 below num-fields
161 (uffi:deref-array row 'mysql-row i)
163 (mysql-free-result res-ptr)))
164 (error 'clsql-sql-error
166 :expression query-expression
167 :errno (mysql-errno mysql-ptr)
168 :error (mysql-error-string mysql-ptr))))
169 (error 'clsql-sql-error
171 :expression query-expression
172 :errno (mysql-errno mysql-ptr)
173 :error (mysql-error-string mysql-ptr))))))
175 (defmethod database-execute-command (sql-expression (database mysql-database))
176 (uffi:with-cstring (sql-native sql-expression)
177 (let ((mysql-ptr (database-mysql-ptr database)))
178 (declare (type mysql-mysql-ptr-def mysql-ptr))
179 (if (zerop (mysql-query mysql-ptr sql-native))
181 (error 'clsql-sql-error
183 :expression sql-expression
184 :errno (mysql-errno mysql-ptr)
185 :error (mysql-error-string mysql-ptr))))))
187 (defstruct mysql-result-set
188 (res-ptr (uffi:make-null-pointer 'mysql-mysql-res)
189 :type mysql-mysql-res-ptr-def)
191 (num-fields nil :type fixnum)
192 (full-set nil :type boolean))
195 (defmethod database-query-result-set (query-expression
196 (database mysql-database)
198 (uffi:with-cstring (query-native query-expression)
199 (let ((mysql-ptr (database-mysql-ptr database)))
200 (declare (type mysql-mysql-ptr-def mysql-ptr))
201 (if (zerop (mysql-query mysql-ptr query-native))
202 (let ((res-ptr (if full-set
203 (mysql-store-result mysql-ptr)
204 (mysql-use-result mysql-ptr))))
205 (declare (type mysql-mysql-res-ptr-def res-ptr))
206 (if (not (uffi:null-pointer-p res-ptr))
207 (let* ((num-fields (mysql-num-fields res-ptr))
208 (result-set (make-mysql-result-set
210 :num-fields num-fields
219 (mysql-num-rows res-ptr))
222 (error 'clsql-sql-error
224 :expression query-expression
225 :errno (mysql-errno mysql-ptr)
226 :error (mysql-error-string mysql-ptr))))
227 (error 'clsql-sql-error
229 :expression query-expression
230 :errno (mysql-errno mysql-ptr)
231 :error (mysql-error-string mysql-ptr))))))
233 (defmethod database-dump-result-set (result-set (database mysql-database))
234 (mysql-free-result (mysql-result-set-res-ptr result-set))
238 (defmethod database-store-next-row (result-set (database mysql-database) list)
239 (let* ((res-ptr (mysql-result-set-res-ptr result-set))
240 (row (mysql-fetch-row res-ptr))
241 (types (mysql-result-set-types result-set)))
242 (declare (type mysql-mysql-res-ptr-def res-ptr)
243 (type mysql-row-def row))
244 (unless (uffi:null-pointer-p row)
245 (loop for i from 0 below (mysql-result-set-num-fields result-set)
250 (uffi:deref-array row 'mysql-row i)