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 1.6 2002/03/24 22:25:51 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)
37 (:export #:mysql-database)
38 (:documentation "This is the CLSQL interface to MySQL."))
40 (in-package :clsql-mysql)
42 (defmethod database-initialize-database-type ((database-type (eql :mysql)))
45 (uffi:def-type mysql-mysql-ptr-def (* mysql-mysql))
46 (uffi:def-type mysql-row-def mysql-row)
47 (uffi:def-type mysql-mysql-res-ptr-def (* mysql-mysql-res))
49 (defclass mysql-database (database)
50 ((mysql-ptr :accessor database-mysql-ptr :initarg :mysql-ptr
51 :type mysql-mysql-ptr-def)))
53 (defmethod database-name-from-spec (connection-spec (database-type (eql :mysql)))
54 (check-connection-spec connection-spec database-type (host db user password))
55 (destructuring-bind (host db user password) connection-spec
56 (declare (ignore password))
57 (concatenate 'string host "/" db "/" user)))
59 (defmethod database-connect (connection-spec (database-type (eql :mysql)))
60 (check-connection-spec connection-spec database-type (host db user password))
61 (destructuring-bind (host db user password) connection-spec
62 (let ((mysql-ptr (mysql-init (uffi:make-null-pointer 'mysql-mysql)))
64 (if (uffi:null-pointer-p mysql-ptr)
65 (error 'clsql-connect-error
66 :database-type database-type
67 :connection-spec connection-spec
68 :errno (mysql-errno mysql-ptr)
69 :error (mysql-error-string mysql-ptr))
70 (uffi:with-cstrings ((host-native host)
72 (password-native password)
74 (socket-native socket))
75 (let ((error-occurred nil))
77 (if (uffi:null-pointer-p
79 mysql-ptr host-native user-native password-native
80 db-native 0 socket-native 0))
82 (setq error-occurred t)
83 (error 'clsql-connect-error
84 :database-type database-type
85 :connection-spec connection-spec
86 :errno (mysql-errno mysql-ptr)
87 :error (mysql-error-string mysql-ptr)))
88 (make-instance 'mysql-database
89 :name (database-name-from-spec connection-spec
91 :mysql-ptr mysql-ptr))
92 (when error-occurred (mysql-close mysql-ptr)))))))))
95 (defmethod database-disconnect ((database mysql-database))
96 (mysql-close (database-mysql-ptr database))
97 (setf (database-mysql-ptr database) nil)
101 (defstruct mysql-result-set
102 (res-ptr (uffi:make-null-pointer 'mysql-mysql-res)
103 :type mysql-mysql-res-ptr-def)
105 (full-set nil :type boolean))
107 (defmethod database-dump-result-set (result-set (database mysql-database))
108 (mysql-free-result (mysql-result-set-res-ptr result-set))
112 (defmethod database-store-next-row (result-set (database mysql-database) list)
113 (let* ((res-ptr (mysql-result-set-res-ptr result-set))
114 (row (mysql-fetch-row res-ptr)))
115 (declare (type mysql-mysql-res-ptr-def res-ptr)
116 (type mysql-row-def row))
117 (unless (uffi:null-pointer-p row)
118 (loop for i from 0 below (mysql-num-fields res-ptr)
122 (uffi:convert-from-foreign-string (uffi:deref-array row 'mysql-row i))))
126 (defmethod database-execute-command (sql-expression (database mysql-database))
127 (uffi:with-cstring (sql-native sql-expression)
128 (let ((mysql-ptr (database-mysql-ptr database)))
129 (declare (type mysql-mysql-ptr-def mysql-ptr))
130 (if (zerop (mysql-query mysql-ptr sql-native))
132 (error 'clsql-sql-error
134 :expression sql-expression
135 :errno (mysql-errno mysql-ptr)
136 :error (mysql-error-string mysql-ptr))))))
140 (defmethod database-query (query-expression (database mysql-database)
142 (with-slots (mysql-ptr) database
143 (uffi:with-cstring (query-native query-expression)
144 (if (zerop (mysql-query mysql-ptr query-native))
145 (let ((res-ptr (mysql-use-result mysql-ptr)))
148 (loop for row = (mysql-fetch-row res-ptr)
149 until (uffi:null-pointer-p row)
151 (loop for i from 0 below (mysql-num-fields res-ptr)
153 (uffi:convert-from-foreign-string
154 (uffi:deref-array row 'mysql-row i))))
155 (mysql-free-result res-ptr))
156 (error 'clsql-sql-error
158 :expression query-expression
159 :errno (mysql-errno mysql-ptr)
160 :error (mysql-error-string mysql-ptr))))
161 (error 'clsql-sql-error
163 :expression query-expression
164 :errno (mysql-errno mysql-ptr)
165 :error (mysql-error-string mysql-ptr))))))
168 (defmethod database-query-result-set (query-expression (database mysql-database)
169 &key full-set field-types)
170 (uffi:with-cstring (query-native query-expression)
171 (let ((mysql-ptr (database-mysql-ptr database)))
172 (declare (type mysql-mysql-ptr-def mysql-ptr))
173 (if (zerop (mysql-query mysql-ptr query-native))
174 (let ((res-ptr (if full-set
175 (mysql-store-result mysql-ptr)
176 (mysql-use-result mysql-ptr))))
177 (declare (type mysql-mysql-res-ptr-def res-ptr))
178 (if (not (uffi:null-pointer-p res-ptr))
180 (values (make-mysql-result-set :res-ptr res-ptr :full-set t
181 :field-types field-types)
182 (mysql-num-fields res-ptr)
183 (mysql-num-rows res-ptr))
184 (values (make-mysql-result-set :res-ptr res-ptr)
185 (mysql-num-fields res-ptr)))
186 (error 'clsql-sql-error
188 :expression query-expression
189 :errno (mysql-errno mysql-ptr)
190 :error (mysql-error-string mysql-ptr))))
191 (error 'clsql-sql-error
193 :expression query-expression
194 :errno (mysql-errno mysql-ptr)
195 :error (mysql-error-string mysql-ptr))))))