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 1.19 2002/04/27 20:58:11 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))
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)))
103 (defmethod database-connect (connection-spec (database-type (eql :mysql)))
104 (check-connection-spec connection-spec database-type (host db user password))
105 (destructuring-bind (host db user password) connection-spec
106 (let ((mysql-ptr (mysql-init (uffi:make-null-pointer 'mysql-mysql)))
108 (if (uffi:null-pointer-p mysql-ptr)
109 (error 'clsql-connect-error
110 :database-type database-type
111 :connection-spec connection-spec
112 :errno (mysql-errno mysql-ptr)
113 :error (mysql-error-string mysql-ptr))
114 (uffi:with-cstrings ((host-native host)
116 (password-native password)
118 (socket-native socket))
119 (let ((error-occurred nil))
121 (if (uffi:null-pointer-p
123 mysql-ptr host-native user-native password-native
124 db-native 0 socket-native 0))
126 (setq error-occurred t)
127 (error 'clsql-connect-error
128 :database-type database-type
129 :connection-spec connection-spec
130 :errno (mysql-errno mysql-ptr)
131 :error (mysql-error-string mysql-ptr)))
132 (make-instance 'mysql-database
133 :name (database-name-from-spec connection-spec
135 :connection-spec connection-spec
136 :mysql-ptr mysql-ptr))
137 (when error-occurred (mysql-close mysql-ptr)))))))))
140 (defmethod database-disconnect ((database mysql-database))
141 (mysql-close (database-mysql-ptr database))
142 (setf (database-mysql-ptr database) nil)
146 (defmethod database-query (query-expression (database mysql-database)
148 (with-slots (mysql-ptr) database
149 (uffi:with-cstring (query-native query-expression)
150 (if (zerop (mysql-query mysql-ptr query-native))
151 (let ((res-ptr (mysql-use-result mysql-ptr)))
153 (let ((num-fields (mysql-num-fields res-ptr)))
154 (setq types (canonicalize-types
158 (loop for row = (mysql-fetch-row res-ptr)
159 until (uffi:null-pointer-p row)
161 (loop for i from 0 below num-fields
164 (uffi:deref-array row 'mysql-row i)
166 (mysql-free-result res-ptr)))
167 (error 'clsql-sql-error
169 :expression query-expression
170 :errno (mysql-errno mysql-ptr)
171 :error (mysql-error-string mysql-ptr))))
172 (error 'clsql-sql-error
174 :expression query-expression
175 :errno (mysql-errno mysql-ptr)
176 :error (mysql-error-string mysql-ptr))))))
178 (defmethod database-execute-command (sql-expression (database mysql-database))
179 (uffi:with-cstring (sql-native sql-expression)
180 (let ((mysql-ptr (database-mysql-ptr database)))
181 (declare (type mysql-mysql-ptr-def mysql-ptr))
182 (if (zerop (mysql-query mysql-ptr sql-native))
184 (error 'clsql-sql-error
186 :expression sql-expression
187 :errno (mysql-errno mysql-ptr)
188 :error (mysql-error-string mysql-ptr))))))
190 (defstruct mysql-result-set
191 (res-ptr (uffi:make-null-pointer 'mysql-mysql-res)
192 :type mysql-mysql-res-ptr-def)
194 (num-fields nil :type fixnum)
195 (full-set nil :type boolean))
198 (defmethod database-query-result-set (query-expression
199 (database mysql-database)
201 (uffi:with-cstring (query-native query-expression)
202 (let ((mysql-ptr (database-mysql-ptr database)))
203 (declare (type mysql-mysql-ptr-def mysql-ptr))
204 (if (zerop (mysql-query mysql-ptr query-native))
205 (let ((res-ptr (if full-set
206 (mysql-store-result mysql-ptr)
207 (mysql-use-result mysql-ptr))))
208 (declare (type mysql-mysql-res-ptr-def res-ptr))
209 (if (not (uffi:null-pointer-p res-ptr))
210 (let* ((num-fields (mysql-num-fields res-ptr))
211 (result-set (make-mysql-result-set
213 :num-fields num-fields
222 (mysql-num-rows res-ptr))
225 (error 'clsql-sql-error
227 :expression query-expression
228 :errno (mysql-errno mysql-ptr)
229 :error (mysql-error-string mysql-ptr))))
230 (error 'clsql-sql-error
232 :expression query-expression
233 :errno (mysql-errno mysql-ptr)
234 :error (mysql-error-string mysql-ptr))))))
236 (defmethod database-dump-result-set (result-set (database mysql-database))
237 (mysql-free-result (mysql-result-set-res-ptr result-set))
241 (defmethod database-store-next-row (result-set (database mysql-database) list)
242 (let* ((res-ptr (mysql-result-set-res-ptr result-set))
243 (row (mysql-fetch-row res-ptr))
244 (types (mysql-result-set-types result-set)))
245 (declare (type mysql-mysql-res-ptr-def res-ptr)
246 (type mysql-row-def row))
247 (unless (uffi:null-pointer-p row)
248 (loop for i from 0 below (mysql-result-set-num-fields result-set)
253 (uffi:deref-array row 'mysql-row i)