1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
5 ;;;; Name: aodbc-sql.cl
6 ;;;; Purpose: Low-level interface for CLSQL AODBC backend
7 ;;;; Programmer: Kevin M. Rosenberg
8 ;;;; Date Started: Feb 2002
12 ;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
14 ;;;; CLSQL users are granted the rights to distribute and use this software
15 ;;;; as governed by the terms of the Lisp Lesser GNU Public License
16 ;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
17 ;;;; *************************************************************************
19 (in-package #:clsql-aodbc)
21 ;; interface foreign library loading routines
22 (defmethod clsql-base-sys:database-type-library-loaded ((database-type (eql :aodbc)))
23 "T if foreign library was able to be loaded successfully. "
24 (when (find-package :dbi) ;; finds Allegro's DBI (AODBC) package
27 (defmethod clsql-base-sys:database-type-load-foreign ((databae-type (eql :aodbc)))
30 (when (find-package :dbi)
31 (clsql-base-sys:database-type-load-foreign :aodbc))
33 (defmethod database-initialize-database-type ((database-type (eql :aodbc)))
39 (defclass aodbc-database (database)
40 ((aodbc-conn :accessor database-aodbc-conn :initarg :aodbc-conn)))
42 (defmethod database-name-from-spec (connection-spec
43 (database-type (eql :aodbc)))
44 (check-connection-spec connection-spec database-type (dsn user password))
45 (destructuring-bind (dsn user password) connection-spec
46 (declare (ignore password))
47 (concatenate 'string dsn "/" user)))
49 (defmethod database-connect (connection-spec (database-type (eql :aodbc)))
50 (check-connection-spec connection-spec database-type (dsn user password))
52 (destructuring-bind (dsn user password) connection-spec
54 (make-instance 'aodbc-database
55 :name (database-name-from-spec connection-spec :aodbc)
57 (dbi:connect :user user
59 :data-source-name dsn))
60 (error () ;; Init or Connect failed
61 (error 'clsql-connect-error
62 :database-type database-type
63 :connection-spec connection-spec
65 :error "Connection failed")))))
67 (defmethod database-disconnect ((database aodbc-database))
69 (dbi:disconnect (database-aodbc-conn database))
70 (setf (database-aodbc-conn database) nil)
73 (defmethod database-query (query-expression (database aodbc-database) result-types)
76 (dbi:sql query-expression :db (database-aodbc-conn database)
79 (error 'clsql-sql-error
81 :expression query-expression
83 :error "Query failed"))))
85 (defmethod database-execute-command (sql-expression
86 (database aodbc-database))
89 (dbi:sql sql-expression :db (database-aodbc-conn database))
91 (error 'clsql-sql-error
93 :expression sql-expression
95 :error "Execute command failed"))))
97 (defstruct aodbc-result-set
99 (types nil :type cons)
100 (full-set nil :type boolean))
102 (defmethod database-query-result-set ((query-expression string)
103 (database aodbc-database)
104 &key full-set result-types)
107 (multiple-value-bind (query column-names)
108 (dbi:sql query-expression
109 :db (database-aodbc-conn database)
116 (make-aodbc-result-set :query query :full-set full-set
118 (length column-names)
119 nil ;; not able to return number of rows with aodbc
122 (error 'clsql-sql-error
124 :expression query-expression
126 :error "Query result set failed"))))
128 (defmethod database-dump-result-set (result-set (database aodbc-database))
130 (dbi:close-query (aodbc-result-set-query result-set))
133 (defmethod database-store-next-row (result-set
134 (database aodbc-database)
137 (let ((row (dbi:fetch-row (aodbc-result-set-query result-set) nil 'eof)))
141 (loop for elem in row
144 (setf (car rest) elem))
147 ;;; Sequence functions
149 (defun %sequence-name-to-table (sequence-name)
150 (concatenate 'string "_clsql_seq_" (sql-escape sequence-name)))
152 (defun %table-name-to-sequence-name (table-name)
153 (and (>= (length table-name) 11)
154 (string= (subseq table-name 0 11) "_clsql_seq_")
155 (subseq table-name 11)))
157 (defmethod database-create-sequence (sequence-name
158 (database aodbc-database))
159 (let ((table-name (%sequence-name-to-table sequence-name)))
160 (database-execute-command
161 (concatenate 'string "CREATE TABLE " table-name
162 " (id int NOT NULL PRIMARY KEY AUTO_INCREMENT)")
164 (database-execute-command
165 (concatenate 'string "INSERT INTO " table-name
169 (defmethod database-drop-sequence (sequence-name
170 (database aodbc-database))
171 (database-execute-command
172 (concatenate 'string "DROP TABLE " (%sequence-name-to-table sequence-name))
175 (defmethod database-list-sequences ((database aodbc-database)
177 (declare (ignore owner))
178 (mapcar #'(lambda (s) (%table-name-to-sequence-name (car s)))
179 (database-query "SHOW TABLES LIKE '%clsql_seq%'"
182 (defmethod database-set-sequence-position (sequence-name
184 (database aodbc-database))
185 (database-execute-command
186 (format nil "UPDATE ~A SET id=~A" (%sequence-name-to-table sequence-name)
191 (defmethod database-sequence-next (sequence-name (database aodbc-database))
192 (warn "Not implemented."))
194 (defmethod database-sequence-last (sequence-name (database aodbc-database))
195 (declare (ignore sequence-name)))
197 (defmethod database-create (connection-spec (type (eql :aodbc)))
198 (warn "Not implemented."))
200 (defmethod database-destroy (connection-spec (type (eql :aodbc)))
201 (warn "Not implemented."))
203 (defmethod database-probe (connection-spec (type (eql :aodbc)))
204 (warn "Not implemented."))
207 (when (clsql-base-sys:database-type-library-loaded :aodbc)
208 (clsql-base-sys:initialize-database-type :database-type :aodbc))