;; Opaque pointer types
;;
-(uffi:def-foreign-type void-pointer :pointer-void)
-(uffi:def-foreign-type oci-env :pointer-void)
-(uffi:def-foreign-type oci-server :pointer-void)
-(uffi:def-foreign-type oci-error :pointer-void)
-(uffi:def-foreign-type oci-svc-ctx :pointer-void)
-(uffi:def-foreign-type oci-stmt :pointer-void)
+(uffi:def-foreign-type cli-handle :pointer-void)
+(uffi:def-foreign-type cli-pointer :pointer-void)
+(uffi:def-foreign-type cli-char :byte)
+(uffi:def-foreign-type cli-ulen :unsigned-int)
+(uffi:def-foreign-type cli-len :int)
+(uffi:def-foreign-type cli-smallint :short)
+(uffi:def-foreign-type cli-usmallint :unsigned-short)
(defvar +null-void-pointer+ (uffi:make-null-pointer :void))
(defvar +null-void-pointer-pointer+ (uffi:make-null-pointer :pointer-void))
-;;; Check an OCI return code for erroricity and signal a reasonably
+;;; Check an CLI return code for erroricity and signal a reasonably
;;; informative condition if so.
;;;
;;; ERRHP provides an error handle which can be used to find
;;; to detect this subcondition, so it doesn't make sense to set ERRHP
;;; unless NULLS-OK is set.
-(defmacro def-oci-routine ((c-oci-symbol lisp-oci-fn) c-return &rest c-parms)
+(defmacro def-cli-routine ((c-cli-symbol lisp-cli-fn) c-return &rest c-parms)
(let ((ll (mapcar (lambda (x) (declare (ignore x)) (gensym)) c-parms)))
- `(let ((%lisp-oci-fn (uffi:def-function
- (,c-oci-symbol ,(intern (concatenate 'string "%" (symbol-name lisp-oci-fn))))
+ `(let ((%lisp-cli-fn (uffi:def-function
+ (,c-cli-symbol ,(intern (concatenate 'string "%" (symbol-name lisp-cli-fn))))
,c-parms
:returning ,c-return)))
- (defun ,lisp-oci-fn (,@ll &key database nulls-ok)
- (let ((result (funcall %lisp-oci-fn ,@ll)))
+ (defun ,lisp-cli-fn (,@ll &key database nulls-ok)
+ (let ((result (funcall %lisp-cli-fn ,@ll)))
+ #+ignore
(case result
(#.+oci-success+
+oci-success+)
(#.+oci-continue+
(error 'sql-database-error :message "OCI Continue"))
(1804
- (error 'sql-database-error :message "Check DB2_HOME and NLS settings."))
+ (error 'sql-database-error :message "Check CLI_HOME and NLS settings."))
(t
(error 'sql-database-error
:message
(format nil "OCI unknown error, code=~A" result)))))))))
-(defmacro def-raw-oci-routine
- ((c-oci-symbol lisp-oci-fn) c-return &rest c-parms)
+(defmacro def-raw-cli-routine
+ ((c-cli-symbol lisp-cli-fn) c-return &rest c-parms)
(let ((ll (mapcar (lambda (x) (declare (ignore x)) (gensym)) c-parms)))
- `(let ((%lisp-oci-fn (uffi:def-function (,c-oci-symbol ,(intern (concatenate 'string "%" (symbol-name lisp-oci-fn))))
+ `(let ((%lisp-cli-fn (uffi:def-function (,c-cli-symbol ,(intern (concatenate 'string "%" (symbol-name lisp-cli-fn))))
,c-parms
:returning ,c-return)))
- (defun ,lisp-oci-fn (,@ll &key database nulls-ok)
- (funcall %lisp-oci-fn ,@ll)))))
-
-
-(def-oci-routine ("OCIInitialize" oci-initialize)
- :int
- (mode :unsigned-long) ; ub4
- (ctxp :pointer-void) ; dvoid *
- (malocfp :pointer-void) ; dvoid *(*)
- (ralocfp :pointer-void) ; dvoid *(*)
- (mfreefp (* :pointer-void))) ; void *(*)
-
-
-(def-oci-routine ("OCIEnvInit" oci-env-init)
- :int
- (envpp :pointer-void) ; OCIEnv **
- (mode :unsigned-long) ; ub4
- (xtramem-sz :unsigned-long) ; size_t
- (usermempp (* :pointer-void))) ; dvoid **
-
-#-oci7
-(def-oci-routine ("OCIEnvCreate" oci-env-create)
- :int
- (envhpp (* :pointer-void))
- (mode :unsigned-int)
- (ctxp :pointer-void)
- (malocfp :pointer-void)
- (ralocfp :pointer-void)
- (mfreefp :pointer-void)
- (xtramemsz :unsigned-long)
- (usrmempp (* :pointer-void)))
-
-(def-oci-routine ("OCIHandleAlloc" oci-handle-alloc)
- :int
- (parenth :pointer-void) ; const dvoid *
- (hndlpp (* :pointer-void)) ; dvoid **
- (type :unsigned-long) ; ub4
- (xtramem_sz :unsigned-long) ; size_t
- (usrmempp (* :pointer-void))) ; dvoid **
-
-(def-oci-routine ("OCIServerAttach" oci-server-attach)
- :int
- (srvhp :pointer-void) ; oci-server
- (errhp :pointer-void) ; oci-error
- (dblink :cstring) ; :in
- (dblink-len :unsigned-long) ; int
- (mode :unsigned-long)) ; int
-
-
-(def-oci-routine ("OCIHandleFree" oci-handle-free)
- :int
- (p0 :pointer-void) ;; handle
- (p1 :unsigned-long)) ;;type
-
-(def-oci-routine ("OCILogon" oci-logon)
- :int
- (envhp :pointer-void) ; env
- (errhp :pointer-void) ; err
- (svchpp (* :pointer-void)) ; svc
- (username :cstring) ; username
- (uname-len :unsigned-long) ;
- (passwd :cstring) ; passwd
- (password-len :unsigned-long) ;
- (dsn :cstring) ; datasource
- (dsn-len :unsigned-long)) ;
-
-(def-oci-routine ("OCILogoff" oci-logoff)
- :int
- (p0 :pointer-void) ; svc
- (p1 :pointer-void)) ; err
-
-(uffi:def-function ("OCIErrorGet" oci-error-get)
- ((handlp :pointer-void)
- (recordno :unsigned-long)
- (sqlstate :cstring)
- (errcodep (* :long))
- (bufp (* :unsigned-char))
- (bufsize :unsigned-long)
- (type :unsigned-long))
- :returning :void)
-
-(def-oci-routine ("OCIStmtPrepare" oci-stmt-prepare)
- :int
- (stmtp :pointer-void)
- (errhp :pointer-void)
- (stmt :cstring)
- (stmt_len :unsigned-long)
- (language :unsigned-long)
- (mode :unsigned-long))
-
-(def-oci-routine ("OCIStmtExecute" oci-stmt-execute)
- :int
- (svchp :pointer-void)
- (stmtp1 :pointer-void)
- (errhp :pointer-void)
- (iters :unsigned-long)
- (rowoff :unsigned-long)
- (snap_in :pointer-void)
- (snap_out :pointer-void)
- (mode :unsigned-long))
-
-(def-raw-oci-routine ("OCIParamGet" oci-param-get)
- :int
- (hndlp :pointer-void)
- (htype :unsigned-long)
- (errhp :pointer-void)
- (parmdpp (* :pointer-void))
- (pos :unsigned-long))
-
-(def-oci-routine ("OCIAttrGet" oci-attr-get)
- :int
- (trgthndlp :pointer-void)
- (trghndltyp :unsigned-int)
- (attributep :pointer-void)
- (sizep (* :unsigned-int))
- (attrtype :unsigned-int)
- (errhp :pointer-void))
-
-(def-oci-routine ("OCIAttrSet" oci-attr-set)
- :int
- (trgthndlp :pointer-void)
- (trgthndltyp :int :in)
- (attributep :pointer-void)
- (size :int)
- (attrtype :int)
- (errhp oci-error))
-
-(def-oci-routine ("OCIDefineByPos" oci-define-by-pos)
- :int
- (stmtp :pointer-void)
- (defnpp (* :pointer-void))
- (errhp :pointer-void)
- (position :unsigned-long)
- (valuep :pointer-void)
- (value_sz :long)
- (dty :unsigned-short)
- (indp (* :short))
- (rlenp (* :unsigned-short))
- (rcodep (* :unsigned-short))
- (mode :unsigned-long))
-
-(def-oci-routine ("OCIStmtFetch" oci-stmt-fetch)
- :int
- (stmthp :pointer-void)
- (errhp :pointer-void)
- (p2 :unsigned-long)
- (p3 :unsigned-short)
- (p4 :unsigned-long))
-
-
-(def-oci-routine ("OCITransStart" oci-trans-start)
- :int
- (svchp :pointer-void)
- (errhp :pointer-void)
- (p2 :unsigned-short)
- (p3 :unsigned-short))
-
-(def-oci-routine ("OCITransCommit" oci-trans-commit)
- :int
- (svchp :pointer-void)
- (errhp :pointer-void)
- (p2 :unsigned-short))
-
-(def-oci-routine ("OCITransRollback" oci-trans-rollback)
- :int
- (svchp :pointer-void)
- (errhp :pointer-void)
- (p2 :unsigned-short))
-
-
-(def-oci-routine ("OCIServerVersion" oci-server-version)
- :int
- (handlp :pointer-void)
- (errhp :pointer-void)
- (bufp (* :unsigned-char))
- (bufsz :int)
- (hndltype :short))
-
-
-
-;;; Low-level routines that don't do error checking. They are used
-;;; for setting up global environment.
-
-(uffi:def-function "OCIInitialize"
- ((mode :unsigned-long) ; ub4
- (ctxp :pointer-void) ; dvoid *
- (malocfp :pointer-void) ; dvoid *(*)
- (ralocfp :pointer-void) ; dvoid *(*)
- (mfreefp (* :pointer-void)))
- :returning :int)
-
-(uffi:def-function "OCIEnvInit"
- ((envpp :pointer-void) ; OCIEnv **
- (mode :unsigned-long) ; ub4
- (xtramem-sz :unsigned-long) ; size_t
- (usermempp (* :pointer-void)))
- :returning :int)
-
-
-(uffi:def-function "OCIHandleAlloc"
- ((parenth :pointer-void) ; const dvoid *
- (hndlpp (* :pointer-void)) ; dvoid **
- (type :unsigned-long) ; ub4
- (xtramem_sz :unsigned-long) ; size_t
- (usrmempp (* :pointer-void)))
- :returning :int)
-
-(defstruct oci-handle
- (type :unknown)
- (pointer (uffi:allocate-foreign-object :pointer-void)))
-
-(defvar *oci-initialized* nil)
-(defvar *oci-env* nil)
-
-(defvar *oci-handle-types*
- '(:error ; error report handle (OCIError)
- :service-context ; service context handle (OCISvcCtx)
- :statement ; statement (application request) handle (OCIStmt)
- :describe ; select list description handle (OCIDescribe)
- :server ; server context handle (OCIServer)
- :session ; user session handle (OCISession)
- :transaction ; transaction context handle (OCITrans)
- :complex-object ; complex object retrieval handle (OCIComplexObject)
- :security)) ; security handle (OCISecurity)
-
-
-
-(defun oci-init (&key (mode +oci-default+))
- (let ((x (OCIInitialize mode +null-void-pointer+ +null-void-pointer+
- +null-void-pointer+ +null-void-pointer-pointer+)))
- (if (= x 0)
- (let ((env (uffi:allocate-foreign-object :pointer-void)))
- (setq *oci-initialized* mode)
- (let ((x (OCIEnvInit env +oci-default+ 0 +null-void-pointer+)))
- (format t ";; OEI: returned ~d~%" x)
- (setq *oci-env* env))))))
-
-(defun oci-check-return (value)
- (when (= value +oci-invalid-handle+)
- (error 'sql-database-error :message "Invalid Handle")))
-
-(defun oci-get-handle (&key type)
- (if (null *oci-initialized*)
- (oci-init))
- (case type
- (:error
- (let ((ptr (uffi:allocate-foreign-object :pointer-void)))
- (let ((x (OCIHandleAlloc
- (uffi:deref-pointer *oci-env* void-pointer)
- ptr
- +oci-default+
- 0
- +null-void-pointer-pointer+)))
- (oci-check-return x)
- ptr)))
- (:service-context
- "OCISvcCtx")
- (:statement
- "OCIStmt")
- (:describe
- "OCIDescribe")
- (:server
- "OCIServer")
- (:session
- "OCISession")
- (:transaction
- "OCITrans")
- (:complex-object
- "OCIComplexObject")
- (:security
- "OCISecurity")
- (t
- (error 'sql-database-error
- :message
- (format nil "'~s' is not a valid OCI handle type" type)))))
-
-(defun oci-environment ()
- (let ((envhp (oci-get-handle :type :env)))
- (oci-env-init envhp 0 0 +null-void-pointer+)
- envhp))
+ (defun ,lisp-cli-fn (,@ll &key database nulls-ok)
+ (funcall %lisp-cli-fn ,@ll)))))
+
+
+(def-cli-routine ("SQLAllocHandle" sql-allocate-handle)
+ :int
+ (fHandleType cli-smallint)
+ (hInput cli-handle)
+ (phOuput (* cli-handle)))
+
+
+;;; CLI Functions needed
+;;; SQLBindParameter
+;;; SQLExecDirect
+;;; SQLNumResultCols
+;;; SQLDescribeCol
+;;; SQLColAttribute
+;;; SQLRowCount
+;;; SQLBindCol
+;;; SQLFetch
+;;; SQLGetData
+;;; SQLEndTran
+;;; SQLFreeHandle
+;;; SQLDisconnect
+;;; SQLSetConnectAttr
(defmethod database-initialize-database-type ((database-type (eql :db2)))
t)
-;;;; arbitrary parameters, tunable for performance or other reasons
-
-(eval-when (:compile-toplevel :load-toplevel :execute)
- (defconstant +errbuf-len+ 512
- "the number of characters that we allocate for an error message buffer")
- (defconstant +n-buf-rows+ 200
- "the number of table rows that we buffer at once when reading a table.
-CMUCL has a compiled-in limit on how much C data can be allocated
-(through malloc() and friends) at any given time, typically 8 Mb.
-Setting this constant to a moderate value should make it less
-likely that we'll have to worry about the CMUCL limit."))
-
-
-(uffi:def-type vp-type :pointer-void)
-(uffi:def-type vpp-type (* :pointer-void))
-
-(defmacro deref-vp (foreign-object)
- `(the vp-type (uffi:deref-pointer (the vpp-type ,foreign-object) :pointer-void)))
-
-(defvar +unsigned-char-null-pointer+
- (uffi:make-null-pointer :unsigned-char))
-(defvar +unsigned-short-null-pointer+
- (uffi:make-null-pointer :unsigned-short))
-(defvar +unsigned-int-null-pointer+
- (uffi:make-null-pointer :unsigned-int))
-
-;; constants - from OCI?
-
-(defconstant +var-not-in-list+ 1007)
-(defconstant +no-data-found+ 1403)
-(defconstant +null-value-returned+ 1405)
-(defconstant +field-truncated+ 1406)
-
-(eval-when (:compile-toplevel :load-toplevel :execute)
- (defconstant SQLT-NUMBER 2)
- (defconstant SQLT-INT 3)
- (defconstant SQLT-FLT 4)
- (defconstant SQLT-STR 5)
- (defconstant SQLT-DATE 12))
-
-;;; Note that despite the suggestive class name (and the way that the
-;;; *DEFAULT-DATABASE* variable holds an object of this class), a DB
-;;; object is not actually a database but is instead a connection to a
-;;; database. Thus, there's no obstacle to having any number of DB
-;;; objects referring to the same database.
-
-(uffi:def-type pointer-pointer-void '(* :pointer-void))
-
-(defclass db2-database (database) ; was struct db
- ((envhp
- :reader envhp
- :initarg :envhp
- :type pointer-pointer-void
- :documentation
- "OCI environment handle")
- (errhp
- :reader errhp
- :initarg :errhp
- :type pointer-pointer-void
- :documentation
- "OCI error handle")
- (svchp
- :reader svchp
- :initarg :svchp
- :type pointer-pointer-void
- :documentation
- "OCI service context handle")
- (data-source-name
- :initarg :dsn
- :initform nil
- :documentation
- "optional data source name (used only for debugging/printing)")
- (user
- :initarg :user
- :reader user
- :type string
- :documentation
- "the \"user\" value given when data source connection was made")
- (date-format
- :initarg :date-format
- :reader date-format
- :initform "YYYY-MM-DD HH24:MI:SS\"+00\"")
- (date-format-length
- :type number
- :documentation
- "Each database connection can be configured with its own date
-output format. In order to extract date strings from output buffers
-holding multiple date strings in fixed-width fields, we need to know
-the length of that format.")
- (server-version
- :type (or null string)
- :initarg :server-version
- :reader server-version
- :documentation
- "Version string of Db2 server.")
- (major-server-version
- :type (or null fixnum)
- :initarg :major-server-version
- :reader major-server-version
- :documentation
- "The major version number of the Db2 server, should be 8, 9, or 10")))
-
-
-;;; Handle the messy case of return code=+oci-error+, querying the
-;;; system for subcodes and reporting them as appropriate. ERRHP and
-;;; NULLS-OK are as in the OERR function.
-
-(defun handle-oci-error (&key database nulls-ok)
- (cond (database
- (with-slots (errhp) database
- (uffi:with-foreign-objects ((errbuf '(:array :unsigned-char
- #.+errbuf-len+))
- (errcode :long))
- ;; ensure errbuf empty string
- (setf (uffi:deref-array errbuf '(:array :unsigned-char) 0)
- (uffi:ensure-char-storable (code-char 0)))
- (setf (uffi:deref-pointer errcode :long) 0)
-
- (uffi:with-cstring (sqlstate nil)
- (oci-error-get (deref-vp errhp) 1
- sqlstate
- errcode
- (uffi:char-array-to-pointer errbuf)
- +errbuf-len+ +oci-htype-error+))
- (let ((subcode (uffi:deref-pointer errcode :long)))
- (unless (and nulls-ok (= subcode +null-value-returned+))
- (error 'sql-database-error
- :database database
- :error-id subcode
- :message (uffi:convert-from-foreign-string errbuf)))))))
- (nulls-ok
- (error 'sql-database-error
- :database database
- :message "can't handle NULLS-OK without ERRHP"))
- (t
- (error 'sql-database-error
- :database database
- :message "OCI Error (and no ERRHP available to find subcode)"))))
-
-;;; Require an OCI success code.
-;;;
-;;; (The ordinary OCI error reporting mechanisms uses a fair amount of
-;;; machinery (environments and other handles). In order to get to
-;;; where we can use these mechanisms, we have to be able to allocate
-;;; the machinery. The functions for allocating the machinery can
-;;; return errors (e.g. out of memory) but shouldn't. Wrapping this function
-;;; around function calls to such have-to-succeed functions enforces
-;;; this condition.)
-
-(defun osucc (code)
- (declare (type fixnum code))
- (unless (= code +oci-success+)
- (error 'sql-database-error
- :message (format nil "unexpected OCI failure, code=~S" code))))
-
-
-;;; Enabling this can be handy for low-level debugging.
-#+nil
-(progn
- (trace #-oci7 oci-env-create oci-initialize oci-handle-alloc oci-logon
- oci-error-get oci-stmt-prepare oci-stmt-execute
- oci-param-get oci-logon oci-attr-get oci-define-by-pos oci-stmt-fetch)
- (setf debug::*debug-print-length* nil))
-
-
-;; Return the INDEXth string of the OCI array, represented as Lisp
-;; SIMPLE-STRING. SIZE is the size of the fixed-width fields used by
-;; Db2 to store strings within the array.
-
-(uffi:def-type string-pointer (* :unsigned-char))
-
-(defun deref-oci-string (arrayptr string-index size)
- (declare (type string-pointer arrayptr))
- (declare (type (mod #.+n-buf-rows+) string-index))
- (declare (type (and unsigned-byte fixnum) size))
- (let ((str (uffi:convert-from-foreign-string
- (uffi:make-pointer
- (+ (uffi:pointer-address arrayptr) (* string-index size))
- :unsigned-char))))
- (if (string-equal str "NULL") nil str)))
-
-;; the OCI library, part Z: no-longer used logic to convert from
-;; Db2's binary date representation to Common Lisp's native date
-;; representation
-
-#+nil
-(defvar +oci-date-bytes+ 7)
-
-;;; Return the INDEXth date in the OCI array, represented as
-;;; a Common Lisp "universal time" (i.e. seconds since 1900).
-
-#+nil
-(defun deref-oci-date (arrayptr index)
- (oci-date->universal-time (uffi:pointer-address
- (uffi:deref-array arrayptr
- '(:array :unsigned-char)
- (* index +oci-date-bytes+)))))
-#+nil
-(defun oci-date->universal-time (oci-date)
- (declare (type (alien (* :unsigned-char)) oci-date))
- (flet (;; a character from OCI-DATE, interpreted as an unsigned byte
- (ub (i)
- (declare (type (mod #.+oci-date-bytes+) i))
- (mod (uffi:deref-array oci-date string-array i) 256)))
- (let* ((century (* (- (ub 0) 100) 100))
- (year (+ century (- (ub 1) 100)))
- (month (ub 2))
- (day (ub 3))
- (hour (1- (ub 4)))
- (minute (1- (ub 5)))
- (second (1- (ub 6))))
- (encode-universal-time second minute hour day month year))))
-
-
-(defmethod database-list-tables ((database db2-database) &key owner)
- (let ((query
- (if owner
- (format nil
- "select user_tables.table_name from user_tables,all_tables where user_tables.table_name=all_tables.table_name and all_tables.owner='~:@(~A~)'"
- owner)
- "select table_name from user_tables")))
- (mapcar #'car (database-query query database nil nil))))
-
-
-(defmethod database-list-views ((database db2-database) &key owner)
- (let ((query
- (if owner
- (format nil
- "select user_views.view_name from user_views,all_views where user_views.view_name=all_views.view_name and all_views.owner='~:@(~A~)'"
- owner)
- "select view_name from user_views")))
- (mapcar #'car
- (database-query query database nil nil))))
-
-(defmethod database-list-indexes ((database db2-database)
- &key (owner nil))
- (let ((query
- (if owner
- (format nil
- "select user_indexes.index_name from user_indexes,all_indexes where user_indexes.index_name=all_indexes.index_name and all_indexes.owner='~:@(~A~)'"
- owner)
- "select index_name from user_indexes")))
- (mapcar #'car (database-query query database nil nil))))
-
-(defmethod database-list-table-indexes (table (database db2-database)
- &key (owner nil))
- (let ((query
- (if owner
- (format nil
- "select user_indexes.index_name from user_indexes,all_indexes where user_indexes.table_name='~A' and user_indexes.index_name=all_indexes.index_name and all_indexes.owner='~:@(~A~)'"
- table owner)
- (format nil "select index_name from user_indexes where table_name='~A'"
- table))))
- (mapcar #'car (database-query query database nil nil))))
-
-
-(defmethod database-list-attributes (table (database db2-database) &key owner)
- (let ((query
- (if owner
- (format nil
- "select user_tab_columns.column_name from user_tab_columns,all_tables where user_tab_columns.table_name='~A' and all_tables.table_name=user_tab_columns.table_name and all_tables.owner='~:@(~A~)'"
- table owner)
- (format nil
- "select column_name from user_tab_columns where table_name='~A'"
- table))))
- (mapcar #'car (database-query query database nil nil))))
-
-(defmethod database-attribute-type (attribute (table string)
- (database db2-database)
- &key (owner nil))
- (let ((query
- (if owner
- (format nil
- "select data_type,data_length,data_scale,nullable from user_tab_columns,all_tables where user_tab_columns.table_name='~A' and column_name='~A' and all_tables.table_name=user_tab_columns.table_name and all_tables.owner='~:@(~A~)'"
- table attribute owner)
- (format nil
- "select data_type,data_length,data_scale,nullable from user_tab_columns where table_name='~A' and column_name='~A'"
- table attribute))))
- (destructuring-bind (type length scale nullable) (car (database-query query database :auto nil))
- (values (ensure-keyword type) length scale
- (if (char-equal #\Y (schar nullable 0)) 1 0)))))
-
-;; Return one row of the table referred to by QC, represented as a
-;; list; or if there are no more rows, signal an error if EOF-ERRORP,
-;; or return EOF-VALUE otherwise.
-
-;; KLUDGE: This CASE statement is a strong sign that the code would be
-;; cleaner if CD were made into an abstract class, we made variant
-;; classes for CD-for-column-of-strings, CD-for-column-of-floats,
-;; etc., and defined virtual functions to handle operations like
-;; get-an-element-from-column. (For a small special purpose module
-;; like this, would arguably be overkill, so I'm not going to do it
-;; now, but if this code ends up getting more complicated in
-;; maintenance, it would become a really good idea.)
-
-;; Arguably this would be a good place to signal END-OF-FILE, but
-;; since the ANSI spec specifically says that END-OF-FILE means a
-;; STREAM which has no more data, and QC is not a STREAM, we signal
-;; DBI-ERROR instead.
-
-(uffi:def-type short-array '(:array :short))
-(uffi:def-type int-pointer '(* :int))
-(uffi:def-type double-pointer '(* :double))
-
-;;; the result of a database query: a cursor through a table
-(defstruct (db2-result-set (:print-function print-query-cursor)
- (:conc-name qc-)
- (:constructor %make-query-cursor))
- (db (error "missing DB") ; db conn. this table is associated with
- :type db2-database
- :read-only t)
- (stmthp (error "missing STMTHP") ; the statement handle used to create
-;; :type alien ; this table. owned by the QUERY-CURSOR
- :read-only t) ; object, deallocated on CLOSE-QUERY
- (cds) ; (error "missing CDS") ; column descriptors
-; :type (simple-array cd 1)
- ; :read-only t)
- (n-from-oci
- 0 ; buffered rows: number of rows recv'd
- :type (integer 0 #.+n-buf-rows+)) ; from the database on the last read
- (n-to-dbi
- 0 ; number of buffered rows returned, i.e.
- :type (integer 0 #.+n-buf-rows+)) ; the index, within the buffered rows,
- ; of the next row which hasn't already
- ; been returned
- (total-n-from-oci
- 0 ; total number of bytes recv'd from OCI
- :type unsigned-byte) ; in all reads
- (oci-end-seen-p nil)) ; Have we seen the end of OCI
- ; data, i.e. OCI returning
- ; less data than we requested?
- ; OCI doesn't seem to like us
- ; to try to read more data
- ; from it after that..
-
-
-(defun fetch-row (qc &optional (eof-errorp t) eof-value)
- ;;(declare (optimize (speed 3)))
- (cond ((zerop (qc-n-from-oci qc))
- (if eof-errorp
- (error 'sql-database-error :message
- (format nil "no more rows available in ~S" qc))
- eof-value))
- ((>= (qc-n-to-dbi qc)
- (qc-n-from-oci qc))
- (refill-qc-buffers qc)
- (fetch-row qc nil eof-value))
- (t
- (let ((cds (qc-cds qc))
- (reversed-result nil)
- (irow (qc-n-to-dbi qc)))
- (dotimes (icd (length cds))
- (let* ((cd (aref cds icd))
- (b (foreign-resource-buffer (cd-buffer cd)))
- (value
- (let* ((arb (foreign-resource-buffer (cd-indicators cd)))
- (indicator (uffi:deref-array arb '(:array :short) irow)))
- ;;(declare (type short-array arb))
- (unless (= indicator -1)
- (ecase (cd-oci-data-type cd)
- (#.SQLT-STR
- (deref-oci-string b irow (cd-sizeof cd)))
- (#.SQLT-FLT
- (uffi:deref-array b '(:array :double) irow))
- (#.SQLT-INT
- (ecase (cd-sizeof cd)
- (4
- (uffi:deref-array b '(:array :int) irow))))
- (#.SQLT-DATE
- (deref-oci-string b irow (cd-sizeof cd))))))))
- (when (and (eq :string (cd-result-type cd))
- value
- (not (stringp value)))
- (setq value (write-to-string value)))
- (push value reversed-result)))
- (incf (qc-n-to-dbi qc))
- (nreverse reversed-result)))))
-
-(defun refill-qc-buffers (qc)
- (with-slots (errhp) (qc-db qc)
- (setf (qc-n-to-dbi qc) 0)
- (cond ((qc-oci-end-seen-p qc)
- (setf (qc-n-from-oci qc) 0))
- (t
- (let ((oci-code (%oci-stmt-fetch
- (deref-vp (qc-stmthp qc))
- (deref-vp errhp)
- +n-buf-rows+
- +oci-fetch-next+ +oci-default+)))
- (ecase oci-code
- (#.+oci-success+ (values))
- (#.+oci-no-data+ (setf (qc-oci-end-seen-p qc) t)
- (values))
- (#.+oci-error+ (handle-oci-error :database (qc-db qc)
- :nulls-ok t))))
- (uffi:with-foreign-object (rowcount :long)
- (oci-attr-get (deref-vp (qc-stmthp qc))
- +oci-htype-stmt+
- rowcount
- +unsigned-int-null-pointer+
- +oci-attr-row-count+
- (deref-vp errhp))
- (setf (qc-n-from-oci qc)
- (- (uffi:deref-pointer rowcount :long)
- (qc-total-n-from-oci qc)))
- (when (< (qc-n-from-oci qc) +n-buf-rows+)
- (setf (qc-oci-end-seen-p qc) t))
- (setf (qc-total-n-from-oci qc)
- (uffi:deref-pointer rowcount :long)))))
- (values)))
-
-;; the guts of the SQL function
-;;
-;; (like the SQL function, but with the QUERY argument hardwired to T, so
-;; that the return value is always a cursor instead of a list)
-
-;; Is this a SELECT statement? SELECT statements are handled
-;; specially by OCIStmtExecute(). (Non-SELECT statements absolutely
-;; require a nonzero iteration count, while the ordinary choice for a
-;; SELECT statement is a zero iteration count.
-
-;; SELECT statements are the only statements which return tables. We
-;; don't free STMTHP in this case, but instead give it to the new
-;; QUERY-CURSOR, and the new QUERY-CURSOR becomes responsible for
-;; freeing the STMTHP when it is no longer needed.
-
-(defun sql-stmt-exec (sql-stmt-string db result-types field-names)
- (with-slots (envhp svchp errhp)
- db
- (let ((stmthp (uffi:allocate-foreign-object :pointer-void)))
- (uffi:with-foreign-object (stmttype :unsigned-short)
-
- (oci-handle-alloc (deref-vp envhp)
- stmthp
- +oci-htype-stmt+ 0 +null-void-pointer-pointer+)
- (oci-stmt-prepare (deref-vp stmthp)
- (deref-vp errhp)
- (uffi:convert-to-cstring sql-stmt-string)
- (length sql-stmt-string)
- +oci-ntv-syntax+ +oci-default+ :database db)
- (oci-attr-get (deref-vp stmthp)
- +oci-htype-stmt+
- stmttype
- +unsigned-int-null-pointer+
- +oci-attr-stmt-type+
- (deref-vp errhp)
- :database db)
- (let* ((select-p (= (uffi:deref-pointer stmttype :unsigned-short) 1))
- (iters (if select-p 0 1)))
-
- (oci-stmt-execute (deref-vp svchp)
- (deref-vp stmthp)
- (deref-vp errhp)
- iters 0 +null-void-pointer+ +null-void-pointer+ +oci-default+
- :database db)
- (cond (select-p
- (make-query-cursor db stmthp result-types field-names))
- (t
- (oci-handle-free (deref-vp stmthp) +oci-htype-stmt+)
- nil)))))))
-
-
-;; Return a QUERY-CURSOR representing the table returned from the OCI
-;; operation done through STMTHP. TYPES is the argument of the same
-;; name from the external SQL function, controlling type conversion
-;; of the returned arguments.
-
-(defun make-query-cursor (db stmthp result-types field-names)
- (let ((qc (%make-query-cursor :db db
- :stmthp stmthp
- :cds (make-query-cursor-cds db stmthp
- result-types
- field-names))))
- (refill-qc-buffers qc)
- qc))
-
-
-;; the hairy part of MAKE-QUERY-CURSOR: Ask OCI for information
-;; about table columns, translate the information into a Lisp
-;; vector of column descriptors, and return it.
-
-;; Allegro defines several flavors of type conversion, but this
-;; implementation only supports the :AUTO flavor.
-
-;; A note of explanation: OCI's internal number format uses 21
-;; bytes (42 decimal digits). 2 separate (?) one-byte fields,
-;; scale and precision, are used to deduce the nature of these
-;; 21 bytes. See pp. 3-10, 3-26, and 6-13 of OCI documentation
-;; for more details.
-
-;; When calling OCI C code to handle the conversion, we have
-;; only two numeric types available to pass the return value:
-;; double-float and signed-long. It would be possible to
-;; bypass the OCI conversion functions and write Lisp code
-;; which reads the 21-byte field directly and decodes
-;; it. However this is left as an exercise for the reader. :-)
-
-;; The following table describes the mapping, based on the implicit
-;; assumption that C's "signed long" type is a 32-bit integer.
-;;
-;; Internal Values SQL Type C Return Type
-;; =============== ======== =============
-;; Precision > 0 SCALE = -127 FLOAT --> double-float
-;; Precision > 0 && <=9 SCALE = 0 INTEGER --> signed-long
-;; Precision = 0 || > 9 SCALE = 0 BIG INTEGER --> double-float
-;; Precision > 0 SCALE > 0 DECIMAL --> double-float
-
-;; (OCI uses 1-based indexing here.)
-
-;; KLUDGE: This should work for all other data types except those
-;; which don't actually fit in their fixed-width field (BLOBs and the
-;; like). As Winton says, we (Cadabra) don't need to worry much about
-;; those, since we can't reason with them, so we don't use them. But
-;; for a more general application it'd be good to have a more
-;; selective and rigorously correct test here for whether we can
-;; actually handle the given DEREF-DTYPE value. -- WHN 20000106
-
-;; Note: The OCI documentation doesn't seem to say whether the COLNAME
-;; value returned here is a newly-allocated copy which we're
-;; responsible for freeing, or a pointer into some system copy which
-;; will be freed when the system itself is shut down. But judging
-;; from the way that the result is used in the cdemodsa.c example
-;; program, it looks like the latter: we should make our own copy of
-;; the value, but not try to free it.
-
-;; WORKAROUND: OCI seems to return ub2 values for the
-;; +oci-attr-data-size+ attribute even though its documentation claims
-;; that it returns a ub4, and even though the associated "sizep" value
-;; is 4, not 2. In order to make the code here work reliably, without
-;; having to patch it later if OCI is ever fixed to match its
-;; documentation, we pre-zero COLSIZE before making the call into OCI.
-
-;; To exercise the weird OCI behavior (thereby blowing up the code
-;; below, beware!) try setting this value into COLSIZE, calling OCI,
-;; then looking at the value in COLSIZE. (setf colsize #x12345678)
-;; debugging only
-
-
-(uffi:def-type byte-pointer (* :byte))
-(uffi:def-type ulong-pointer (* :unsigned-long))
-(uffi:def-type void-pointer-pointer (* :void-pointer))
-
-(defun make-query-cursor-cds (database stmthp result-types field-names)
- (declare (optimize (safety 3) #+nil (speed 3))
- (type db2-database database)
- (type pointer-pointer-void stmthp))
- (with-slots (errhp) database
- (uffi:with-foreign-objects ((dtype-foreign :unsigned-short)
- (parmdp :pointer-void)
- (precision :byte)
- (scale :byte)
- (colname '(* :unsigned-char))
- (colnamelen :unsigned-long)
- (colsize :unsigned-long)
- (colsizesize :unsigned-long)
- (defnp ':pointer-void))
- (let ((buffer nil)
- (sizeof nil))
- (do ((icolumn 0 (1+ icolumn))
- (cds-as-reversed-list nil))
- ((not (eql (oci-param-get (deref-vp stmthp)
- +oci-htype-stmt+
- (deref-vp errhp)
- parmdp
- (1+ icolumn) :database database)
- +oci-success+))
- (coerce (reverse cds-as-reversed-list) 'simple-vector))
- ;; Decode type of ICOLUMNth column into a type we're prepared to
- ;; handle in Lisp.
- (oci-attr-get (deref-vp parmdp)
- +oci-dtype-param+
- dtype-foreign
- +unsigned-int-null-pointer+
- +oci-attr-data-type+
- (deref-vp errhp))
- (let ((dtype (uffi:deref-pointer dtype-foreign :unsigned-short)))
- (declare (fixnum dtype))
- (case dtype
- (#.SQLT-DATE
- (setf buffer (acquire-foreign-resource :unsigned-char
- (* 32 +n-buf-rows+)))
- (setf sizeof 32 dtype #.SQLT-STR))
- (#.SQLT-NUMBER
- (oci-attr-get (deref-vp parmdp)
- +oci-dtype-param+
- precision
- +unsigned-int-null-pointer+
- +oci-attr-precision+
- (deref-vp errhp))
- (oci-attr-get (deref-vp parmdp)
- +oci-dtype-param+
- scale
- +unsigned-int-null-pointer+
- +oci-attr-scale+
- (deref-vp errhp))
- (let ((*scale (uffi:deref-pointer scale :byte))
- (*precision (uffi:deref-pointer precision :byte)))
-
- ;;(format t "scale=~d, precision=~d~%" *scale *precision)
- (cond
- ((or (and (minusp *scale) (zerop *precision))
- (and (zerop *scale) (plusp *precision)))
- (setf buffer (acquire-foreign-resource :int +n-buf-rows+)
- sizeof 4 ;; sizeof(int)
- dtype #.SQLT-INT))
- (t
- (setf buffer (acquire-foreign-resource :double +n-buf-rows+)
- sizeof 8 ;; sizeof(double)
- dtype #.SQLT-FLT)))))
- ;; Default to SQL-STR
- (t
- (setf (uffi:deref-pointer colsize :unsigned-long) 0)
- (setf dtype #.SQLT-STR)
- (oci-attr-get (deref-vp parmdp)
- +oci-dtype-param+
- colsize
- +unsigned-int-null-pointer+
- +oci-attr-data-size+
- (deref-vp errhp))
- (let ((colsize-including-null (1+ (uffi:deref-pointer colsize :unsigned-long))))
- (setf buffer (acquire-foreign-resource
- :unsigned-char (* +n-buf-rows+ colsize-including-null)))
- (setf sizeof colsize-including-null))))
- (let ((retcodes (acquire-foreign-resource :unsigned-short +n-buf-rows+))
- (indicators (acquire-foreign-resource :short +n-buf-rows+))
- (colname-string ""))
- (when field-names
- (oci-attr-get (deref-vp parmdp)
- +oci-dtype-param+
- colname
- colnamelen
- +oci-attr-name+
- (deref-vp errhp))
- (setq colname-string (uffi:convert-from-foreign-string
- (uffi:deref-pointer colname '(* :unsigned-char))
- :length (uffi:deref-pointer colnamelen :unsigned-long))))
- (push (make-cd :name colname-string
- :sizeof sizeof
- :buffer buffer
- :oci-data-type dtype
- :retcodes retcodes
- :indicators indicators
- :result-type (cond
- ((consp result-types)
- (nth icolumn result-types))
- ((null result-types)
- :string)
- (t
- result-types)))
- cds-as-reversed-list)
- (oci-define-by-pos (deref-vp stmthp)
- defnp
- (deref-vp errhp)
- (1+ icolumn) ; OCI 1-based indexing again
- (foreign-resource-buffer buffer)
- sizeof
- dtype
- (foreign-resource-buffer indicators)
- +unsigned-short-null-pointer+
- (foreign-resource-buffer retcodes)
- +oci-default+))))))))
-
-;; Release the resources associated with a QUERY-CURSOR.
-
-(defun close-query (qc)
- (oci-handle-free (deref-vp (qc-stmthp qc)) +oci-htype-stmt+)
- (let ((cds (qc-cds qc)))
- (dotimes (i (length cds))
- (release-cd-resources (aref cds i))))
- (values))
-
-
-;; Release the resources associated with a column description.
-
-(defun release-cd-resources (cd)
- (free-foreign-resource (cd-buffer cd))
- (free-foreign-resource (cd-retcodes cd))
- (free-foreign-resource (cd-indicators cd))
- (values))
-
-
-(defmethod database-name-from-spec (connection-spec (database-type (eql :db2)))
- (check-connection-spec connection-spec database-type (dsn user password))
- (destructuring-bind (dsn user password) connection-spec
- (declare (ignore password))
- (concatenate 'string dsn "/" user)))
-
-
-(defmethod database-connect (connection-spec (database-type (eql :db2)))
- (check-connection-spec connection-spec database-type (dsn user password))
- (destructuring-bind (data-source-name user password)
- connection-spec
- (let ((envhp (uffi:allocate-foreign-object :pointer-void))
- (errhp (uffi:allocate-foreign-object :pointer-void))
- (svchp (uffi:allocate-foreign-object :pointer-void))
- (srvhp (uffi:allocate-foreign-object :pointer-void)))
- ;; Requests to allocate environments and handles should never
- ;; fail in normal operation, and they're done too early to
- ;; handle errors very gracefully (since they're part of the
- ;; error-handling mechanism themselves) so we just assert they
- ;; work.
- (setf (deref-vp envhp) +null-void-pointer+)
- #-oci7
- (oci-env-create envhp +oci-default+ +null-void-pointer+
- +null-void-pointer+ +null-void-pointer+
- +null-void-pointer+ 0 +null-void-pointer-pointer+)
- #+oci7
- (progn
- (oci-initialize +oci-object+ +null-void-pointer+ +null-void-pointer+
- +null-void-pointer+ +null-void-pointer-pointer+)
- (ignore-errors (oci-handle-alloc +null-void-pointer+ envhp
- +oci-htype-env+ 0
- +null-void-pointer-pointer+)) ;no testing return
- (oci-env-init envhp +oci-default+ 0 +null-void-pointer-pointer+))
- (oci-handle-alloc (deref-vp envhp) errhp
- +oci-htype-error+ 0 +null-void-pointer-pointer+)
- (oci-handle-alloc (deref-vp envhp) srvhp
- +oci-htype-server+ 0 +null-void-pointer-pointer+)
-
- #+ignore ;; not used since CLSQL uses the OCILogon function instead
- (uffi:with-cstring (dblink nil)
- (oci-server-attach (deref-vp srvhp)
- (deref-vp errhp)
- dblink
- 0 +oci-default+))
-
- (oci-handle-alloc (deref-vp envhp) svchp
- +oci-htype-svcctx+ 0 +null-void-pointer-pointer+)
- (oci-attr-set (deref-vp svchp)
- +oci-htype-svcctx+
- (deref-vp srvhp) 0 +oci-attr-server+
- (deref-vp errhp))
- ;; oci-handle-alloc((dvoid *)encvhp, (dvoid **)&stmthp, OCI_HTYPE_STMT, 0, 0);
- ;;#+nil
-
- (let ((db (make-instance 'db2-database
- :name (database-name-from-spec connection-spec
- database-type)
- :connection-spec connection-spec
- :envhp envhp
- :errhp errhp
- :database-type :db2
- :svchp svchp
- :dsn data-source-name
- :user user)))
- (oci-logon (deref-vp envhp)
- (deref-vp errhp)
- svchp
- (uffi:convert-to-cstring user) (length user)
- (uffi:convert-to-cstring password) (length password)
- (uffi:convert-to-cstring data-source-name) (length data-source-name)
- :database db)
- ;; :date-format-length (1+ (length date-format)))))
- (setf (slot-value db 'clsql-sys::state) :open)
- (database-execute-command
- (format nil "ALTER SESSION SET NLS_DATE_FORMAT='~A'" (date-format db)) db)
- (let ((server-version
- (caar (database-query
- "SELECT BANNER FROM V$VERSION WHERE BANNER LIKE '%Db2%'" db nil nil))))
- (setf (slot-value db 'server-version) server-version
- (slot-value db 'major-server-version) (major-client-version-from-string
- server-version)))
- db))))
-
-
-(defun major-client-version-from-string (str)
- (cond
- ((search " 10g " str)
- 10)
- ((search "Db29i " str)
- 9)
- ((search "Db28" str)
- 8)))
-
-(defun major-server-version-from-string (str)
- (when (> (length str) 2)
- (cond
- ((string= "10." (subseq str 0 3))
- 10)
- ((string= "9." (subseq str 0 2))
- 9)
- ((string= "8." (subseq str 0 2))
- 8))))
-
-
-;; Close a database connection.
-
-(defmethod database-disconnect ((database db2-database))
- (osucc (oci-logoff (deref-vp (svchp database))
- (deref-vp (errhp database))))
- (osucc (oci-handle-free (deref-vp (envhp database)) +oci-htype-env+))
- ;; Note: It's neither required nor allowed to explicitly deallocate the
- ;; ERRHP handle here, since it's owned by the ENVHP deallocated above,
- ;; and was therefore automatically deallocated at the same time.
- t)
-
-;;; Do the database operation described in SQL-STMT-STRING on database
-;;; DB and, if the command is a SELECT, return a representation of the
-;;; resulting table. The representation of the table is controlled by the
-;;; QUERY argument:
-;;; * If QUERY is NIL, the table is returned as a list of rows, with
-;;; each row represented by a list.
-;;; * If QUERY is non-NIL, the result is returned as a QUERY-CURSOR
-;;; suitable for FETCH-ROW and CLOSE-QUERY
-;;; The TYPES argument controls the type conversion method used
-;;; to construct the table. The Allegro version supports several possible
-;;; values for this argument, but we only support :AUTO.
-
-(defmethod database-query (query-expression (database db2-database) result-types field-names)
- (let ((cursor (sql-stmt-exec query-expression database result-types field-names)))
- ;; (declare (type (or query-cursor null) cursor))
- (if (null cursor) ; No table was returned.
- (values)
- (do ((reversed-result nil))
- (nil)
- (let* ((eof-value :eof)
- (row (fetch-row cursor nil eof-value)))
- (when (eq row eof-value)
- (close-query cursor)
- (if field-names
- (return (values (nreverse reversed-result)
- (loop for cd across (qc-cds cursor)
- collect (cd-name cd))))
- (return (nreverse reversed-result))))
- (push row reversed-result))))))
-
-
-(defmethod database-create-sequence (sequence-name (database db2-database))
- (execute-command
- (concatenate 'string "CREATE SEQUENCE " (sql-escape sequence-name))
- :database database))
-
-(defmethod database-drop-sequence (sequence-name (database db2-database))
- (execute-command
- (concatenate 'string "DROP SEQUENCE " (sql-escape sequence-name))
- :database database))
-
-(defmethod database-sequence-next (sequence-name (database db2-database))
- (caar
- (database-query
- (concatenate 'string "SELECT "
- (sql-escape sequence-name)
- ".NEXTVAL FROM dual"
- )
- database :auto nil)))
-
-(defmethod database-set-sequence-position (name position (database db2-database))
- (without-interrupts
- (let* ((next (database-sequence-next name database))
- (incr (- position next)))
- (database-execute-command
- (format nil "ALTER SEQUENCE ~A INCREMENT BY ~D" name incr)
- database)
- (database-sequence-next name database)
- (database-execute-command
- (format nil "ALTER SEQUENCE ~A INCREMENT BY 1" name)
- database))))
-
-(defmethod database-list-sequences ((database db2-database) &key owner)
- (let ((query
- (if owner
- (format nil
- "select user_sequences.sequence_name from user_sequences,all_sequences where user_sequences.sequence_name=all_sequences.sequence_name and all_sequences.sequence_owner='~:@(~A~)'"
- owner)
- "select sequence_name from user_sequences")))
- (mapcar #'car (database-query query database nil nil))))
-
-(defmethod database-execute-command (sql-expression (database db2-database))
- (database-query sql-expression database nil nil)
- (when (database-autocommit database)
- (db2-commit database))
- t)
-
-
-(defstruct (cd (:constructor make-cd)
- (:print-function print-cd))
- "a column descriptor: metadata about the data in a table"
-
- ;; name of this column
- (name (error "missing NAME") :type simple-string :read-only t)
- ;; the size in bytes of a single element
- (sizeof (error "missing SIZE") :type fixnum :read-only t)
- ;; an array of +N-BUF-ROWS+ elements in C representation
- (buffer (error "Missing BUFFER")
- :type foreign-resource
- :read-only t)
- ;; an array of +N-BUF-ROWS+ OCI return codes in C representation.
- ;; (There must be one return code for every element of every
- ;; row in order to be able to represent nullness.)
- (retcodes (error "Missing RETCODES")
- :type foreign-resource
- :read-only t)
- (indicators (error "Missing INDICATORS")
- :type foreign-resource
- :read-only t)
- ;; the OCI code for the data type of a single element
- (oci-data-type (error "missing OCI-DATA-TYPE")
- :type fixnum
- :read-only t)
- (result-type (error "missing RESULT-TYPE")
- :read-only t))
-
-
-(defun print-cd (cd stream depth)
- (declare (ignore depth))
- (print-unreadable-object (cd stream :type t)
- (format stream
- ":NAME ~S :OCI-DATA-TYPE ~S :OCI-DATA-SIZE ~S"
- (cd-name cd)
- (cd-oci-data-type cd)
- (cd-sizeof cd))))
-
-(defun print-query-cursor (qc stream depth)
- (declare (ignore depth))
- (print-unreadable-object (qc stream :type t :identity t)
- (prin1 (qc-db qc) stream)))
-
-
-(defmethod database-query-result-set ((query-expression string)
- (database db2-database)
- &key full-set result-types)
- (let ((cursor (sql-stmt-exec query-expression database result-types nil)))
- (if full-set
- (values cursor (length (qc-cds cursor)) nil)
- (values cursor (length (qc-cds cursor))))))
-
-
-(defmethod database-dump-result-set (result-set (database db2-database))
- (close-query result-set))
-
-(defmethod database-store-next-row (result-set (database db2-database) list)
- (let* ((eof-value :eof)
- (row (fetch-row result-set nil eof-value)))
- (unless (eq eof-value row)
- (loop for i from 0 below (length row)
- do (setf (nth i list) (nth i row)))
- list)))
-
-(defmethod database-start-transaction ((database db2-database))
- (call-next-method)
- ;; Not needed with simple transaction
- #+ignore
- (with-slots (svchp errhp) database
- (oci-trans-start (deref-vp svchp)
- (deref-vp errhp)
- 60
- +oci-trans-new+))
- t)
-
-
-(defun db2-commit (database)
- (with-slots (svchp errhp) database
- (osucc (oci-trans-commit (deref-vp svchp)
- (deref-vp errhp)
- 0))))
-
-(defmethod database-commit-transaction ((database db2-database))
- (call-next-method)
- (db2-commit database)
- t)
-
-(defmethod database-abort-transaction ((database db2-database))
- (call-next-method)
- (osucc (oci-trans-rollback (deref-vp (svchp database))
- (deref-vp (errhp database))
- 0))
- t)
-
-;; Specifications
-
-(defmethod db-type-has-bigint? ((type (eql :db2)))
- nil)
-
-(defmethod db-type-has-fancy-math? ((db-type (eql :db2)))
- t)
-
-(defmethod db-type-has-boolean-where? ((db-type (eql :db2)))
- nil)
-
-(when (clsql-sys:database-type-library-loaded :db2)
- (clsql-sys:initialize-database-type :database-type :db2))
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