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-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-sys:database-type-load-foreign ((databae-type (eql :aodbc)))
30 (when (find-package :dbi)
31 (clsql-sys:database-type-load-foreign :aodbc))
36 (defclass aodbc-database (generic-odbc-database)
37 ((aodbc-conn :accessor database-aodbc-conn :initarg :aodbc-conn)
38 (aodbc-db-type :accessor database-aodbc-db-type :initform :unknown)))
40 (defmethod database-name-from-spec (connection-spec
41 (database-type (eql :aodbc)))
42 (check-connection-spec connection-spec database-type (dsn user password))
43 (destructuring-bind (dsn user password) connection-spec
44 (declare (ignore password))
45 (concatenate 'string dsn "/" user)))
47 (defmethod database-connect (connection-spec (database-type (eql :aodbc)))
48 (check-connection-spec connection-spec database-type (dsn user password))
50 (destructuring-bind (dsn user password) connection-spec
52 (make-instance 'aodbc-database
53 :name (database-name-from-spec connection-spec :aodbc)
55 :dbi-package (find-package '#:dbi)
57 (dbi:connect :user user
59 :data-source-name dsn))
62 (error () ;; Init or Connect failed
63 (error 'sql-connection-error
64 :database-type database-type
65 :connection-spec connection-spec
66 :message "Connection failed")))))
70 ;;; Sequence functions
72 (defun %sequence-name-to-table (sequence-name)
73 (concatenate 'string "_CLSQL_SEQ_" (sql-escape sequence-name)))
75 (defun %table-name-to-sequence-name (table-name)
76 (and (>= (length table-name) 11)
77 (string-equal (subseq table-name 0 11) "_CLSQL_SEQ_")
78 (subseq table-name 11)))
80 (defmethod database-create-sequence (sequence-name
81 (database aodbc-database))
82 (let ((table-name (%sequence-name-to-table sequence-name)))
83 (database-execute-command
84 (concatenate 'string "CREATE TABLE " table-name
85 " (last_value int NOT NULL PRIMARY KEY, increment_by int, min_value int, is_called char(1))")
87 (database-execute-command
88 (concatenate 'string "INSERT INTO " table-name
89 " VALUES (1,1,1,'f')")
92 (defmethod database-drop-sequence (sequence-name
93 (database aodbc-database))
94 (database-execute-command
95 (concatenate 'string "DROP TABLE " (%sequence-name-to-table sequence-name))
98 (defmethod database-list-sequences ((database aodbc-database)
100 (declare (ignore owner))
101 (warn "database-list-sequences not implemented for AODBC.")
105 (defmethod database-list-indexes ((database aodbc-database)
107 (warn "database-list-indexes not implemented for AODBC.")
110 (defmethod database-set-sequence-position (sequence-name
112 (database aodbc-database))
113 (database-execute-command
114 (format nil "UPDATE ~A SET last_value=~A,is_called='t'"
115 (%sequence-name-to-table sequence-name)
120 (defmethod database-sequence-next (sequence-name (database aodbc-database))
122 (let* ((table-name (%sequence-name-to-table sequence-name))
125 (concatenate 'string "SELECT last_value,is_called FROM "
127 database :auto nil))))
129 ((char-equal (schar (second tuple) 0) #\f)
130 (database-execute-command
131 (format nil "UPDATE ~A SET is_called='t'" table-name)
135 (let ((new-pos (1+ (car tuple))))
136 (database-execute-command
137 (format nil "UPDATE ~A SET last_value=~D" table-name new-pos)
141 (defmethod database-sequence-last (sequence-name (database aodbc-database))
143 (caar (database-query
144 (concatenate 'string "SELECT last_value FROM "
145 (%sequence-name-to-table sequence-name))
146 database :auto nil))))
148 (defmethod database-create (connection-spec (type (eql :aodbc)))
149 (warn "Not implemented."))
151 (defmethod database-destroy (connection-spec (type (eql :aodbc)))
152 (warn "Not implemented."))
154 (defmethod database-probe (connection-spec (type (eql :aodbc)))
155 (warn "Not implemented."))
157 ;;; Backend capabilities
159 (defmethod database-underlying-type ((database aodbc-database))
160 (database-aodbc-db-type database))
162 (defmethod db-backend-has-create/destroy-db? ((db-type (eql :aodbc)))
165 (defmethod database-initialize-database-type ((database-type (eql :aodbc)))
168 (when (clsql-sys:database-type-library-loaded :aodbc)
169 (clsql-sys:initialize-database-type :database-type :aodbc))