;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Feb 2002
;;;;
-;;;; $Id: aodbc-sql.lisp,v 1.1 2002/09/30 10:19:23 kevin Exp $
+;;;; $Id$
;;;;
;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
;;;;
;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
;;;; *************************************************************************
-(declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
-(in-package :clsql-aodbc)
-
+(in-package #:clsql-aodbc)
;; interface foreign library loading routines
-(defmethod database-type-library-loaded ((database-type (eql :aodbc)))
+(defmethod clsql-sys:database-type-library-loaded ((database-type (eql :aodbc)))
"T if foreign library was able to be loaded successfully. "
(when (find-package :dbi) ;; finds Allegro's DBI (AODBC) package
t))
-(defmethod clsql-base-sys:database-type-load-foreign ((databae-type (eql :aodbc)))
+(defmethod clsql-sys:database-type-load-foreign ((databae-type (eql :aodbc)))
t)
(when (find-package :dbi)
- (clsql-base-sys:database-type-load-foreign :aodbc))
-
-(defmethod database-initialize-database-type ((database-type (eql :aodbc)))
- t)
+ (clsql-sys:database-type-load-foreign :aodbc))
;; AODBC interface
-(defclass aodbc-database (database)
- ((aodbc-conn :accessor database-aodbc-conn :initarg :aodbc-conn)))
+(defclass aodbc-database (generic-odbc-database)
+ ((aodbc-conn :accessor database-aodbc-conn :initarg :aodbc-conn)
+ (aodbc-db-type :accessor database-aodbc-db-type :initform :unknown)))
(defmethod database-name-from-spec (connection-spec
(database-type (eql :aodbc)))
(handler-case
(make-instance 'aodbc-database
:name (database-name-from-spec connection-spec :aodbc)
+ :database-type :aodbc
+ :dbi-package (find-package '#:dbi)
:aodbc-conn
(dbi:connect :user user
:password password
:data-source-name dsn))
+ (clsql-error (e)
+ (error e))
(error () ;; Init or Connect failed
- (error 'clsql-connect-error
+ (error 'sql-connection-error
:database-type database-type
:connection-spec connection-spec
- :errno nil
- :error "Connection failed")))))
+ :message "Connection failed")))))
-(defmethod database-disconnect ((database aodbc-database))
- #+aodbc-v2
- (dbi:disconnect (database-aodbc-conn database))
- (setf (database-aodbc-conn database) nil)
- t)
-(defmethod database-query (query-expression (database aodbc-database) types)
- #+aodbc-v2
- (handler-case
- (dbi:sql query-expression :db (database-aodbc-conn database)
- :types types)
- (error ()
- (error 'clsql-sql-error
- :database database
- :expression query-expression
- :errno nil
- :error "Query failed"))))
-
-(defmethod database-execute-command (sql-expression
+
+;;; Sequence functions
+
+(defun %sequence-name-to-table (sequence-name)
+ (concatenate 'string "_CLSQL_SEQ_" (sql-escape sequence-name)))
+
+(defun %table-name-to-sequence-name (table-name)
+ (and (>= (length table-name) 11)
+ (string-equal (subseq table-name 0 11) "_CLSQL_SEQ_")
+ (subseq table-name 11)))
+
+(defmethod database-create-sequence (sequence-name
(database aodbc-database))
- #+aodbc-v2
- (handler-case
- (dbi:sql sql-expression :db (database-aodbc-conn database))
- (error ()
- (error 'clsql-sql-error
- :database database
- :expression sql-expression
- :errno nil
- :error "Execute command failed"))))
-
-(defstruct aodbc-result-set
- (query nil)
- (types nil :type cons)
- (full-set nil :type boolean))
-
-(defmethod database-query-result-set (query-expression (database aodbc-database)
- &key full-set types)
- #+aodbc-v2
- (handler-case
- (multiple-value-bind (query column-names)
- (dbi:sql query-expression
- :db (database-aodbc-conn database)
- :row-count nil
- :column-names t
- :query t
- :types types
- )
- (values
- (make-aodbc-result-set :query query :full-set full-set
- :types types)
- (length column-names)
- nil ;; not able to return number of rows with aodbc
- ))
- (error ()
- (error 'clsql-sql-error
- :database database
- :expression query-expression
- :errno nil
- :error "Query result set failed"))))
-
-(defmethod database-dump-result-set (result-set (database aodbc-database))
- #+aodbc-v2
- (dbi:close-query (aodbc-result-set-query result-set))
+ (let ((table-name (%sequence-name-to-table sequence-name)))
+ (database-execute-command
+ (concatenate 'string "CREATE TABLE " table-name
+ " (last_value int NOT NULL PRIMARY KEY, increment_by int, min_value int, is_called char(1))")
+ database)
+ (database-execute-command
+ (concatenate 'string "INSERT INTO " table-name
+ " VALUES (1,1,1,'f')")
+ database)))
+
+(defmethod database-drop-sequence (sequence-name
+ (database aodbc-database))
+ (database-execute-command
+ (concatenate 'string "DROP TABLE " (%sequence-name-to-table sequence-name))
+ database))
+
+(defmethod database-list-sequences ((database aodbc-database)
+ &key (owner nil))
+ (declare (ignore owner))
+ (warn "database-list-sequences not implemented for AODBC.")
+ nil)
+
+
+(defmethod database-list-indexes ((database aodbc-database)
+ &key (owner nil))
+ (warn "database-list-indexes not implemented for AODBC.")
+ nil)
+
+(defmethod database-set-sequence-position (sequence-name
+ (position integer)
+ (database aodbc-database))
+ (database-execute-command
+ (format nil "UPDATE ~A SET last_value=~A,is_called='t'"
+ (%sequence-name-to-table sequence-name)
+ position)
+ database)
+ position)
+
+(defmethod database-sequence-next (sequence-name (database aodbc-database))
+ (without-interrupts
+ (let* ((table-name (%sequence-name-to-table sequence-name))
+ (tuple
+ (car (database-query
+ (concatenate 'string "SELECT last_value,is_called FROM "
+ table-name)
+ database :auto nil))))
+ (cond
+ ((char-equal (schar (second tuple) 0) #\f)
+ (database-execute-command
+ (format nil "UPDATE ~A SET is_called='t'" table-name)
+ database)
+ (car tuple))
+ (t
+ (let ((new-pos (1+ (car tuple))))
+ (database-execute-command
+ (format nil "UPDATE ~A SET last_value=~D" table-name new-pos)
+ database)
+ new-pos))))))
+
+(defmethod database-sequence-last (sequence-name (database aodbc-database))
+ (without-interrupts
+ (caar (database-query
+ (concatenate 'string "SELECT last_value FROM "
+ (%sequence-name-to-table sequence-name))
+ database :auto nil))))
+
+(defmethod database-create (connection-spec (type (eql :aodbc)))
+ (warn "Not implemented."))
+
+(defmethod database-destroy (connection-spec (type (eql :aodbc)))
+ (warn "Not implemented."))
+
+(defmethod database-probe (connection-spec (type (eql :aodbc)))
+ (warn "Not implemented."))
+
+;;; Backend capabilities
+
+(defmethod database-underlying-type ((database aodbc-database))
+ (database-aodbc-db-type database))
+
+(defmethod db-backend-has-create/destroy-db? ((db-type (eql :aodbc)))
+ nil)
+
+(defmethod database-initialize-database-type ((database-type (eql :aodbc)))
t)
-(defmethod database-store-next-row (result-set
- (database aodbc-database)
- list)
- #+aodbc-v2
- (let ((row (dbi:fetch-row (aodbc-result-set-query result-set) nil 'eof)))
- (if (eq row 'eof)
- nil
- (progn
- (loop for elem in row
- for rest on list
- do
- (setf (car rest) elem))
- list))))
-
-
-(when (clsql-base-sys:database-type-library-loaded :aodbc)
- (clsql-base-sys:initialize-database-type :database-type :aodbc))
+(when (clsql-sys:database-type-library-loaded :aodbc)
+ (clsql-sys:initialize-database-type :database-type :aodbc))
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