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)
58 (dbi:connect :user user
60 :data-source-name dsn))
63 (error () ;; Init or Connect failed
64 (error 'clsql-connect-error
65 :database-type database-type
66 :connection-spec connection-spec
68 :error "Connection failed")))))
70 (defmethod database-disconnect ((database aodbc-database))
72 (dbi:disconnect (database-aodbc-conn database))
73 (setf (database-aodbc-conn database) nil)
76 (defmethod database-query (query-expression (database aodbc-database) result-types)
79 (dbi:sql query-expression :db (database-aodbc-conn database)
84 (error 'clsql-sql-error
86 :expression query-expression
88 :error "Query failed"))))
90 (defmethod database-execute-command (sql-expression
91 (database aodbc-database))
94 (dbi:sql sql-expression :db (database-aodbc-conn database))
98 (error 'clsql-sql-error
100 :expression sql-expression
102 :error "Execute command failed"))))
104 (defstruct aodbc-result-set
106 (types nil :type cons)
107 (full-set nil :type boolean))
109 (defmethod database-query-result-set ((query-expression string)
110 (database aodbc-database)
111 &key full-set result-types)
114 (multiple-value-bind (query column-names)
115 (dbi:sql query-expression
116 :db (database-aodbc-conn database)
123 (make-aodbc-result-set :query query :full-set full-set
125 (length column-names)
126 nil ;; not able to return number of rows with aodbc
131 (error 'clsql-sql-error
133 :expression query-expression
135 :error "Query result set failed"))))
137 (defmethod database-dump-result-set (result-set (database aodbc-database))
139 (dbi:close-query (aodbc-result-set-query result-set))
142 (defmethod database-store-next-row (result-set
143 (database aodbc-database)
146 (let ((row (dbi:fetch-row (aodbc-result-set-query result-set) nil 'eof)))
150 (loop for elem in row
153 (setf (car rest) elem))
156 ;;; Sequence functions
158 (defun %sequence-name-to-table (sequence-name)
159 (concatenate 'string "_clsql_seq_" (sql-escape sequence-name)))
161 (defun %table-name-to-sequence-name (table-name)
162 (and (>= (length table-name) 11)
163 (string= (subseq table-name 0 11) "_clsql_seq_")
164 (subseq table-name 11)))
166 (defmethod database-create-sequence (sequence-name
167 (database aodbc-database))
168 (let ((table-name (%sequence-name-to-table sequence-name)))
169 (database-execute-command
170 (concatenate 'string "CREATE TABLE " table-name
171 " (last_value int NOT NULL PRIMARY KEY, increment_by int, min_value int, is_called char(1))")
173 (database-execute-command
174 (concatenate 'string "INSERT INTO " table-name
175 " VALUES (1,1,1,'f')")
178 (defmethod database-drop-sequence (sequence-name
179 (database aodbc-database))
180 (database-execute-command
181 (concatenate 'string "DROP TABLE " (%sequence-name-to-table sequence-name))
184 (defmethod database-list-sequences ((database aodbc-database)
186 (declare (ignore owner))
187 (mapcar #'(lambda (s) (%table-name-to-sequence-name (car s)))
188 (database-query "SHOW TABLES LIKE '%clsql_seq%'"
191 (defmethod database-list-tables ((database aodbc-database)
193 (declare (ignore owner))
195 (multiple-value-bind (rows col-names)
196 (dbi:list-all-database-tables :db (database-aodbc-conn database))
197 (let ((pos (position "TABLE_NAME" col-names :test #'string-equal)))
199 (loop for row in rows
200 collect (nth pos row))))))
203 (defmethod database-list-attributes ((table string) (database aodbc-database)
205 (declare (ignore owner))
207 (multiple-value-bind (rows col-names)
208 (dbi:list-all-table-columns table :db (database-aodbc-conn database))
209 (let ((pos (position "COLUMN_NAME" col-names :test #'string-equal)))
211 (loop for row in rows
212 collect (nth pos row))))))
214 (defmethod database-attribute-type ((attribute string) (table string) (database aodbc-database)
216 (declare (ignore owner))
218 (multiple-value-bind (rows col-names)
219 (dbi:list-all-table-columns table :db (database-aodbc-conn database))
220 (let ((pos (position "TYPE_NAME" col-names :test #'string-equal)))
222 (loop for row in rows
223 collect (nth pos row))))))
225 (defmethod database-set-sequence-position (sequence-name
227 (database aodbc-database))
228 (database-execute-command
229 (format nil "UPDATE ~A SET last_value=~A,is_called='t'"
230 (%sequence-name-to-table sequence-name)
235 (defmethod database-sequence-next (sequence-name (database aodbc-database))
237 (let* ((table-name (%sequence-name-to-table sequence-name))
240 (concatenate 'string "SELECT last_value,is_called FROM "
245 ((char-equal (schar (second tuple) 0) #\f)
246 (database-execute-command
247 (format nil "UPDATE ~A SET is_called='t'" table-name)
251 (let ((new-pos (1+ (car tuple))))
252 (database-execute-command
253 (format nil "UPDATE ~A SET last_value=~D" table-name new-pos)
257 (defmethod database-sequence-last (sequence-name (database aodbc-database))
259 (caar (database-query
260 (concatenate 'string "SELECT last_value FROM "
261 (%sequence-name-to-table sequence-name))
265 (defmethod database-create (connection-spec (type (eql :aodbc)))
266 (warn "Not implemented."))
268 (defmethod database-destroy (connection-spec (type (eql :aodbc)))
269 (warn "Not implemented."))
271 (defmethod database-probe (connection-spec (type (eql :aodbc)))
272 (warn "Not implemented."))
275 (when (clsql-base-sys:database-type-library-loaded :aodbc)
276 (clsql-base-sys:initialize-database-type :database-type :aodbc))