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 1.14 2002/03/27 08:09:25 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 canonicalize-types (types num-fields res-ptr)
47 (canonicalize-type-list types num-fields))
50 #+ignore (field-vec (mysql-fetch-fields res-ptr)))
51 (dotimes (i num-fields)
53 (let* ( (field (mysql-fetch-field-direct res-ptr i))
54 #+ignore (field (uffi:deref-array field-vec 'mysql-field-vector i))
55 (type (uffi:get-slot-value field 'mysql-field 'type)))
58 ((#.mysql-field-types#tiny
59 #.mysql-field-types#short
60 #.mysql-field-types#int24
61 #.mysql-field-types#long)
63 (#.mysql-field-types#longlong
65 ((#.mysql-field-types#double
66 #.mysql-field-types#float
67 #.mysql-field-types#decimal)
72 (nreverse new-types)))
76 (defmethod database-initialize-database-type ((database-type (eql :mysql)))
79 (uffi:def-type mysql-mysql-ptr-def (* mysql-mysql))
80 (uffi:def-type mysql-row-def mysql-row)
81 (uffi:def-type mysql-mysql-res-ptr-def (* mysql-mysql-res))
83 (defclass mysql-database (database)
84 ((mysql-ptr :accessor database-mysql-ptr :initarg :mysql-ptr
85 :type mysql-mysql-ptr-def)))
87 (defmethod database-name-from-spec (connection-spec (database-type (eql :mysql)))
88 (check-connection-spec connection-spec database-type (host db user password))
89 (destructuring-bind (host db user password) connection-spec
90 (declare (ignore password))
91 (concatenate 'string host "/" db "/" user)))
94 (defmethod database-connect (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 (let ((mysql-ptr (mysql-init (uffi:make-null-pointer 'mysql-mysql)))
99 (if (uffi:null-pointer-p mysql-ptr)
100 (error 'clsql-connect-error
101 :database-type database-type
102 :connection-spec connection-spec
103 :errno (mysql-errno mysql-ptr)
104 :error (mysql-error-string mysql-ptr))
105 (uffi:with-cstrings ((host-native host)
107 (password-native password)
109 (socket-native socket))
110 (let ((error-occurred nil))
112 (if (uffi:null-pointer-p
114 mysql-ptr host-native user-native password-native
115 db-native 0 socket-native 0))
117 (setq error-occurred t)
118 (error 'clsql-connect-error
119 :database-type database-type
120 :connection-spec connection-spec
121 :errno (mysql-errno mysql-ptr)
122 :error (mysql-error-string mysql-ptr)))
123 (make-instance 'mysql-database
124 :name (database-name-from-spec connection-spec
126 :mysql-ptr mysql-ptr))
127 (when error-occurred (mysql-close mysql-ptr)))))))))
130 (defmethod database-disconnect ((database mysql-database))
131 (mysql-close (database-mysql-ptr database))
132 (setf (database-mysql-ptr database) nil)
136 (defmethod database-query (query-expression (database mysql-database)
138 (with-slots (mysql-ptr) database
139 (uffi:with-cstring (query-native query-expression)
140 (if (zerop (mysql-query mysql-ptr query-native))
141 (let ((res-ptr (mysql-use-result mysql-ptr)))
143 (let ((num-fields (mysql-num-fields res-ptr)))
144 (setq types (canonicalize-types
148 (loop for row = (mysql-fetch-row res-ptr)
149 until (uffi:null-pointer-p row)
151 (loop for i from 0 below num-fields
154 (uffi:deref-array row 'mysql-row i)
156 (mysql-free-result res-ptr)))
157 (error 'clsql-sql-error
159 :expression query-expression
160 :errno (mysql-errno mysql-ptr)
161 :error (mysql-error-string mysql-ptr))))
162 (error 'clsql-sql-error
164 :expression query-expression
165 :errno (mysql-errno mysql-ptr)
166 :error (mysql-error-string mysql-ptr))))))
168 (defmethod database-execute-command (sql-expression (database mysql-database))
169 (uffi:with-cstring (sql-native sql-expression)
170 (let ((mysql-ptr (database-mysql-ptr database)))
171 (declare (type mysql-mysql-ptr-def mysql-ptr))
172 (if (zerop (mysql-query mysql-ptr sql-native))
174 (error 'clsql-sql-error
176 :expression sql-expression
177 :errno (mysql-errno mysql-ptr)
178 :error (mysql-error-string mysql-ptr))))))
180 (defstruct mysql-result-set
181 (res-ptr (uffi:make-null-pointer 'mysql-mysql-res)
182 :type mysql-mysql-res-ptr-def)
184 (num-fields nil :type fixnum)
185 (full-set nil :type boolean))
188 (defmethod database-query-result-set (query-expression
189 (database mysql-database)
191 (uffi:with-cstring (query-native query-expression)
192 (let ((mysql-ptr (database-mysql-ptr database)))
193 (declare (type mysql-mysql-ptr-def mysql-ptr))
194 (if (zerop (mysql-query mysql-ptr query-native))
195 (let ((res-ptr (if full-set
196 (mysql-store-result mysql-ptr)
197 (mysql-use-result mysql-ptr))))
198 (declare (type mysql-mysql-res-ptr-def res-ptr))
199 (if (not (uffi:null-pointer-p res-ptr))
200 (let* ((num-fields (mysql-num-fields res-ptr))
201 (result-set (make-mysql-result-set
203 :num-fields num-fields
212 (mysql-num-rows res-ptr))
215 (error 'clsql-sql-error
217 :expression query-expression
218 :errno (mysql-errno mysql-ptr)
219 :error (mysql-error-string mysql-ptr))))
220 (error 'clsql-sql-error
222 :expression query-expression
223 :errno (mysql-errno mysql-ptr)
224 :error (mysql-error-string mysql-ptr))))))
226 (defmethod database-dump-result-set (result-set (database mysql-database))
227 (mysql-free-result (mysql-result-set-res-ptr result-set))
231 (defmethod database-store-next-row (result-set (database mysql-database) list)
232 (let* ((res-ptr (mysql-result-set-res-ptr result-set))
233 (row (mysql-fetch-row res-ptr))
234 (types (mysql-result-set-types result-set)))
235 (declare (type mysql-mysql-res-ptr-def res-ptr)
236 (type mysql-row-def row))
237 (unless (uffi:null-pointer-p row)
238 (loop for i from 0 below (mysql-result-set-num-fields result-set)
243 (uffi:deref-array row 'mysql-row i)