;;;; FILE IDENTIFICATION
;;;;
;;;; Name: odbc-sql.cl
-;;;; Purpose: Low-level interface for CLSQL ODBC backend
+;;;; Purpose: Medium-level interface for CLSQL ODBC backend
;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Feb 2002
;;;;
-;;;; $Id: odbc-sql.lisp 8983 2004-04-12 21:16:48Z kevin $
+;;;; $Id$
;;;;
;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
;;;;
;;;; *************************************************************************
(defpackage #:clsql-odbc
- (:use #:common-lisp #:clsql-base)
+ (:use #:common-lisp #:clsql-sys)
(:export #:odbc-database)
(:documentation "This is the CLSQL interface to ODBC."))
;; ODBC interface
-(defclass odbc-database (database)
- ((odbc-conn :accessor database-odbc-conn :initarg :odbc-conn)
- (odbc-db-type :accessor database-odbc-db-type)))
+(defclass odbc-database (generic-odbc-database)
+ ((odbc-db-type :accessor database-odbc-db-type)))
(defmethod database-name-from-spec (connection-spec
(database-type (eql :odbc)))
(check-connection-spec connection-spec database-type (dsn user password))
(destructuring-bind (dsn user password) connection-spec
(handler-case
- (let ((db
- (make-instance 'odbc-database
- :name (database-name-from-spec connection-spec :odbc)
- :database-type :odbc
- :odbc-conn
- (odbc-dbi:connect :user user
- :password password
- :data-source-name dsn))))
+ (let ((db (make-instance 'odbc-database
+ :name (database-name-from-spec connection-spec :odbc)
+ :database-type :odbc
+ :dbi-package (find-package '#:odbc-dbi)
+ :odbc-conn
+ (odbc-dbi:connect :user user
+ :password password
+ :data-source-name dsn))))
(store-type-of-connected-database db)
+ ;; Ensure this database type is initialized so can check capabilities of
+ ;; underlying database
+ (initialize-database-type :database-type database-type)
db)
- (clsql-error (e)
- (error e))
- #+ignore
- (error () ;; Init or Connect failed
- (error 'clsql-connect-error
- :database-type database-type
- :connection-spec connection-spec
- :errno nil
- :error "Connection failed")))))
+ #+ignore
+ (error () ;; Init or Connect failed
+ (error 'sql-connection-error
+ :database-type database-type
+ :connection-spec connection-spec
+ :message "Connection failed")))))
(defmethod database-underlying-type ((database odbc-database))
(database-odbc-db-type database))
(defun store-type-of-connected-database (db)
- (let* ((odbc-conn (database-odbc-conn db))
+ (let* ((odbc-conn (clsql-sys::odbc-conn db))
(server-name (odbc-dbi::get-odbc-info odbc-conn odbc::$SQL_SERVER_NAME))
(dbms-name (odbc-dbi::get-odbc-info odbc-conn odbc::$SQL_DBMS_NAME))
(type
(cond
((or (search "postgresql" server-name :test #'char-equal)
(search "postgresql" dbms-name :test #'char-equal))
+ (unless (find-package 'clsql-postgresql)
+ (ignore-errors (asdf:operate 'asdf:load-op 'clsql-postgresql-socket)))
:postgresql)
((or (search "mysql" server-name :test #'char-equal)
(search "mysql" dbms-name :test #'char-equal))
+ (unless (find-package 'clsql-mysql)
+ ;; ignore errors on platforms where the shared libraries are not available
+ (ignore-errors (asdf:operate 'asdf:load-op 'clsql-mysql)))
:mysql)
((or (search "oracle" server-name :test #'char-equal)
(search "oracle" dbms-name :test #'char-equal))
:oracle))))
(setf (database-odbc-db-type db) type)))
-(defmethod database-disconnect ((database odbc-database))
- (odbc-dbi:disconnect (database-odbc-conn database))
- (setf (database-odbc-conn database) nil)
- t)
-
-(defmethod database-query (query-expression (database odbc-database)
- result-types field-names)
- (handler-case
- (odbc-dbi:sql query-expression :db (database-odbc-conn database)
- :result-types result-types
- :column-names field-names)
- (clsql-error (e)
- (error e))
- #+ignore
- (error ()
- (error 'clsql-sql-error
- :database database
- :expression query-expression
- :errno nil
- :error "Query failed"))))
-
-(defmethod database-execute-command (sql-expression
- (database odbc-database))
- (handler-case
- (odbc-dbi:sql sql-expression :db (database-odbc-conn database))
- (clsql-error (e)
- (error e))
- #+ignore
- (error ()
- (error 'clsql-sql-error
- :database database
- :expression sql-expression
- :errno nil
- :error "Execute command failed"))))
-
-(defstruct odbc-result-set
- (query nil)
- (types nil)
- (full-set nil :type boolean))
-
-(defmethod database-query-result-set ((query-expression string)
- (database odbc-database)
- &key full-set result-types)
- (handler-case
- (multiple-value-bind (query column-names)
- (odbc-dbi:sql query-expression
- :db (database-odbc-conn database)
- :row-count nil
- :column-names t
- :query t
- :result-types result-types)
- (values
- (make-odbc-result-set :query query :full-set full-set
- :types result-types)
- (length column-names)
- nil ;; not able to return number of rows with odbc
- ))
- #+ignore
- (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 odbc-database))
- (odbc-dbi:close-query (odbc-result-set-query result-set))
- t)
-
-(defmethod database-store-next-row (result-set
- (database odbc-database)
- list)
- (let ((row (odbc-dbi:fetch-row (odbc-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))))
-
-;;; 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 odbc-database))
- (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 odbc-database))
- (database-execute-command
- (concatenate 'string "DROP TABLE " (%sequence-name-to-table sequence-name))
- database))
-
-(defmethod database-list-sequences ((database odbc-database)
- &key (owner nil))
- (declare (ignore owner))
- ;; FIXME: Underlying database backend stuff should come from that backend
-
- (case (database-odbc-db-type database)
- (:mysql
- (mapcan #'(lambda (s)
- (let ((sn (%table-name-to-sequence-name (car s))))
- (and sn (list sn))))
- (database-query "SHOW TABLES" database nil nil)))
- ((:postgresql :postgresql-socket)
- (mapcar #'(lambda (s) (%table-name-to-sequence-name (car s)))
- (database-query "SELECT RELNAME FROM pg_class WHERE RELNAME LIKE '%clsql_seq%'"
- database nil nil)))))
-
-(defmethod database-list-tables ((database odbc-database)
- &key (owner nil))
- (declare (ignore owner))
- (multiple-value-bind (rows col-names)
- (odbc-dbi:list-all-database-tables :db (database-odbc-conn database))
- (declare (ignore col-names))
- ;; TABLE_SCHEM is hard-coded in second column by ODBC Driver Manager
- ;; TABLE_NAME in third column, TABLE_TYPE in fourth column
- (loop for row in rows
- when (and (not (string-equal "information_schema" (nth 1 row)))
- (string-equal "TABLE" (nth 3 row)))
- collect (nth 2 row))))
-
-(defmethod database-list-views ((database odbc-database)
- &key (owner nil))
- (declare (ignore owner))
- (multiple-value-bind (rows col-names)
- (odbc-dbi:list-all-database-tables :db (database-odbc-conn database))
- (declare (ignore col-names))
- ;; TABLE_SCHEM is hard-coded in second column by ODBC Driver Manager
- ;; TABLE_NAME in third column, TABLE_TYPE in fourth column
- (loop for row in rows
- when (and (not (string-equal "information_schema" (nth 1 row)))
- (string-equal "VIEW" (nth 3 row)))
- collect (nth 2 row))))
-(defmethod database-list-attributes ((table string) (database odbc-database)
- &key (owner nil))
- (declare (ignore owner))
- (multiple-value-bind (rows col-names)
- (odbc-dbi:list-all-table-columns table :db (database-odbc-conn database))
- (declare (ignore col-names))
- ;; COLUMN_NAME is hard-coded by odbc spec as fourth position
- (loop for row in rows
- collect (fourth row))))
-
-(defmethod database-attribute-type ((attribute string) (table string) (database odbc-database)
- &key (owner nil))
- (declare (ignore owner))
- (multiple-value-bind (rows col-names)
- (odbc-dbi:list-all-table-columns table :db (database-odbc-conn database))
- (declare (ignore col-names))
- ;; COLUMN_NAME is hard-coded by odbc spec as fourth position
- ;; TYPE_NAME is the sixth column
- ;; PRECISION/COLUMN_SIZE is the seventh column
- ;; SCALE/DECIMAL_DIGITS is the ninth column
- ;; NULLABLE is the eleventh column
- (loop for row in rows
- when (string-equal attribute (fourth row))
- do
- (let ((size (seventh row))
- (precision (ninth row))
- (scale (nth 10 row)))
- (return (values (ensure-keyword (sixth row))
- (when size (parse-integer size))
- (when precision (parse-integer precision))
- (when scale (parse-integer scale))))))))
-
-(defmethod database-set-sequence-position (sequence-name
- (position integer)
- (database odbc-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 odbc-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 odbc-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 :odbc)))
(declare (ignore connection-spec))
(defmethod database-list-table-indexes (table (database odbc-database)
&key (owner nil))
(declare (ignore owner))
- (odbc-list-table-indexes table database))
-
-(defun odbc-list-table-indexes (table database)
(multiple-value-bind (rows col-names)
(odbc-dbi:list-table-indexes
table
- :db (database-odbc-conn database))
+ :db (clsql-sys::odbc-conn database))
(declare (ignore col-names))
;; INDEX_NAME is hard-coded in sixth position by ODBC driver
;; FIXME: ??? is hard-coded in the fourth position
;; nothing to do
t)
-(when (clsql-base:database-type-library-loaded :odbc)
- (clsql-base:initialize-database-type :database-type :odbc))
+(when (clsql-sys:database-type-library-loaded :odbc)
+ (clsql-sys:initialize-database-type :database-type :odbc))
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