1 ;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
2 ;;;; *************************************************************************
3 ;;;; FILE IDENTIFICATION
5 ;;;; Name: oracle-sql.lisp
9 ;;;; This file is part of CLSQL.
11 ;;;; CLSQL users are granted the rights to distribute and use this software
12 ;;;; as governed by the terms of the Lisp Lesser GNU Public License
13 ;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
14 ;;;; *************************************************************************
16 (in-package #:clsql-oracle)
18 (defmethod database-initialize-database-type
19 ((database-type (eql :oracle)))
22 ;;;; arbitrary parameters, tunable for performance or other reasons
24 (eval-when (:compile-toplevel :load-toplevel :execute)
25 (defconstant +errbuf-len+ 512
26 "the number of characters that we allocate for an error message buffer")
27 (defconstant +n-buf-rows+ 200
28 "the number of table rows that we buffer at once when reading a table.
29 CMUCL has a compiled-in limit on how much C data can be allocated
30 (through malloc() and friends) at any given time, typically 8 Mb.
31 Setting this constant to a moderate value should make it less
32 likely that we'll have to worry about the CMUCL limit."))
35 ;;; utilities for mucking around with C-level stuff
37 ;; Return the address of ALIEN-OBJECT (like the C operator "&").
39 ;; The INDICES argument is useful to give the ALIEN-OBJECT the
40 ;; expected number of zero indices, especially when we have a bunch of
41 ;; 1-element arrays running around due to the workaround for the CMUCL
42 ;; 18b WITH-ALIEN scalar bug.
44 (defmacro c-& (alien-object type)
45 `(uffi:pointer-address (uffi:deref-pointer ,alien-object ,type)))
47 ;; constants - from OCI?
49 (defconstant +var-not-in-list+ 1007)
50 (defconstant +no-data-found+ 1403)
51 (defconstant +null-value-returned+ 1405)
52 (defconstant +field-truncated+ 1406)
54 (eval-when (:compile-toplevel :load-toplevel :execute)
55 (defconstant SQLT-INT 3)
56 (defconstant SQLT-STR 5)
57 (defconstant SQLT-FLT 4)
58 (defconstant SQLT-DATE 12))
60 ;;; Note that despite the suggestive class name (and the way that the
61 ;;; *DEFAULT-DATABASE* variable holds an object of this class), a DB
62 ;;; object is not actually a database but is instead a connection to a
63 ;;; database. Thus, there's no obstacle to having any number of DB
64 ;;; objects referring to the same database.
66 (uffi:def-type pointer-pointer-void '(* :pointer-void))
68 (defclass oracle-database (database) ; was struct db
72 :type pointer-pointer-void
74 "OCI environment handle")
78 :type pointer-pointer-void
84 :type pointer-pointer-void
86 "OCI service context handle")
91 "optional data source name (used only for debugging/printing)")
97 "the \"user\" value given when data source connection was made")
101 :initform "YYYY-MM-DD HH24:MI:SS\"+00\"")
105 "Each database connection can be configured with its own date
106 output format. In order to extract date strings from output buffers
107 holding multiple date strings in fixed-width fields, we need to know
108 the length of that format.")
111 :initarg :server-version
112 :reader server-version
114 "Version string of Oracle server.")
115 (major-version-number
116 :type (or null fixnum)
117 :initarg :major-version-number
118 :reader major-version-number
120 "The major version number of Oracle, should be 8, 9, or 10")))
123 ;;; Handle the messy case of return code=+oci-error+, querying the
124 ;;; system for subcodes and reporting them as appropriate. ERRHP and
125 ;;; NULLS-OK are as in the OERR function.
127 (defun handle-oci-error (&key database nulls-ok)
131 (uffi:with-foreign-objects ((errbuf :unsigned-char +errbuf-len+)
133 ;; ensure errbuf empty string
134 (setf (uffi:deref-array errbuf '(:array :unsigned-char) 0)
135 (uffi:ensure-char-storable (code-char 0)))
137 (setf (uffi:deref-pointer errcode :long) 0)
138 (oci-error-get (uffi:deref-pointer errhp void-pointer) 1
139 (uffi:make-null-pointer :unsigned-char)
140 errcode errbuf +errbuf-len+ +oci-htype-error+)
141 (let ((subcode (uffi:deref-pointer errcode :long)))
142 (unless (and nulls-ok (= subcode +null-value-returned+))
143 (error 'sql-database-error
146 :message (uffi:convert-from-foreign-string errbuf)))))))
148 (error 'sql-database-error
150 :message "can't handle NULLS-OK without ERRHP"))
152 (error 'sql-database-error
154 :message "OCI Error (and no ERRHP available to find subcode)"))))
156 ;;; Require an OCI success code.
158 ;;; (The ordinary OCI error reporting mechanisms uses a fair amount of
159 ;;; machinery (environments and other handles). In order to get to
160 ;;; where we can use these mechanisms, we have to be able to allocate
161 ;;; the machinery. The functions for allocating the machinery can
162 ;;; return errors (e.g. out of memory) but shouldn't. Wrapping this function
163 ;;; around function calls to such have-to-succeed functions enforces
167 (declare (type fixnum code))
168 (unless (= code +oci-success+)
170 :format-control "unexpected OCI failure, code=~S"
171 :format-arguments (list code))))
174 ;;; Enabling this can be handy for low-level debugging.
177 (trace oci-initialize #+oci-8-1-5 oci-env-create oci-handle-alloc oci-logon
178 oci-error-get oci-stmt-prepare oci-stmt-execute
179 oci-param-get oci-logon oci-attr-get oci-define-by-pos oci-stmt-fetch)
180 (setf debug::*debug-print-length* nil))
183 ;;;; the OCI library, part V: converting from OCI representations to Lisp
186 ;; Return the INDEXth string of the OCI array, represented as Lisp
187 ;; SIMPLE-STRING. SIZE is the size of the fixed-width fields used by
188 ;; Oracle to store strings within the array.
190 ;; In the wild world of databases, trailing spaces aren't generally
191 ;; significant, since e.g. "LARRY " and "LARRY " are the same string
192 ;; stored in different fixed-width fields. OCI drops trailing spaces
193 ;; for us in some cases but apparently not for fields of fixed
194 ;; character width, e.g.
196 ;; (dbi:sql "create table employees (name char(15), job char(15), city
197 ;; char(15), rate float)" :db orcl :types :auto)
198 ;; In order to map the "same string" property above onto Lisp equality,
199 ;; we drop trailing spaces in all cases:
201 (uffi:def-type string-pointer (* :unsigned-char))
203 (defun deref-oci-string (arrayptr string-index size)
204 (declare (type string-pointer arrayptr))
205 (declare (type (mod #.+n-buf-rows+) string-index))
206 (declare (type (and unsigned-byte fixnum) size))
207 (let* ((raw (uffi:convert-from-foreign-string
209 (+ (uffi:pointer-address arrayptr) (* string-index size))
211 (trimmed (string-trim " " raw)))
212 (if (equal trimmed "NULL") nil trimmed)))
214 ;; the OCI library, part Z: no-longer used logic to convert from
215 ;; Oracle's binary date representation to Common Lisp's native date
219 (defvar +oci-date-bytes+ 7)
221 ;;; Return the INDEXth date in the OCI array, represented as
222 ;;; a Common Lisp "universal time" (i.e. seconds since 1900).
225 (defun deref-oci-date (arrayptr index)
226 (oci-date->universal-time (uffi:pointer-address
227 (uffi:deref-array arrayptr
228 '(:array :unsigned-char)
229 (* index +oci-date-bytes+)))))
231 (defun oci-date->universal-time (oci-date)
232 (declare (type (alien (* :unsigned-char)) oci-date))
233 (flet (;; a character from OCI-DATE, interpreted as an unsigned byte
235 (declare (type (mod #.+oci-date-bytes+) i))
236 (mod (uffi:deref-array oci-date string-pointer i) 256)))
237 (let* ((century (* (- (ub 0) 100) 100))
238 (year (+ century (- (ub 1) 100)))
243 (second (1- (ub 6))))
244 (encode-universal-time second minute hour day month year))))
246 ;; Return (VALUES ALL-TABLES COLUMN-NAMES), where ALL-TABLES is a
247 ;; table containing one row for each table available in DB, and
248 ;; COLUMN-NAMES is a list of header names for the columns in
251 ;; The Allegro version also accepted a HSTMT argument.
253 ;(defmethod database-list-tables ((db oracle-database))
254 ; (sql:query "select '',OWNER,TABLE_NAME,TABLE_TYPE,'' from all_catalog"))
257 (defmethod database-list-tables ((database oracle-database) &key owner)
259 (database-query "select table_name from user_tables"
262 (values (database-query "select TABLE_NAME from all_catalog
263 where owner not in ('PUBLIC','SYSTEM','SYS','WMSYS','EXFSYS','CTXSYS','WKSYS','WK_TEST','MDSYS','DMSYS','OLAPSYS','ORDSYS','XDB')"
267 (defmethod database-list-views ((database oracle-database)
269 ;; (database-query "select table_name from all_catalog" database nil nil)
271 (database-query "select view_name from user_views" database nil nil)))
274 (defmethod database-list-indexes ((database oracle-database)
277 (database-query "select index_name from user_indexes" database nil nil)))
279 (defmethod list-all-table-columns (table (db oracle-database))
280 (declare (string table))
281 (let* ((sql-stmt (concatenate
287 "user_tab_columns.COLUMN_NAME,"
288 "user_tab_columns.DATA_TYPE from user_tab_columns,"
289 "all_tables where all_tables.table_name = '" table "'"
290 " and user_tab_columns.table_name = '" table "'"))
291 (preresult (database-query sql-stmt db :auto nil)))
292 ;; PRERESULT is like RESULT except that it has a name instead of
293 ;; type codes in the fifth column of each row. To fix this, we
294 ;; destructively modify PRERESULT.
295 (dolist (preresult-row preresult)
296 (setf (fifth preresult-row)
297 (if (find (fifth preresult-row)
305 (defmethod database-list-attributes (table (database oracle-database) &key owner)
309 "select user_tab_columns,column_name from user_tab_columns where user_tab_columns.table_name='~A'"
314 ;; Return one row of the table referred to by QC, represented as a
315 ;; list; or if there are no more rows, signal an error if EOF-ERRORP,
316 ;; or return EOF-VALUE otherwise.
318 ;; KLUDGE: This CASE statement is a strong sign that the code would be
319 ;; cleaner if CD were made into an abstract class, we made variant
320 ;; classes for CD-for-column-of-strings, CD-for-column-of-floats,
321 ;; etc., and defined virtual functions to handle operations like
322 ;; get-an-element-from-column. (For a small special purpose module
323 ;; like this, would arguably be overkill, so I'm not going to do it
324 ;; now, but if this code ends up getting more complicated in
325 ;; maintenance, it would become a really good idea.)
327 ;; Arguably this would be a good place to signal END-OF-FILE, but
328 ;; since the ANSI spec specifically says that END-OF-FILE means a
329 ;; STREAM which has no more data, and QC is not a STREAM, we signal
330 ;; DBI-ERROR instead.
332 (uffi:def-type short-pointer '(* :short))
333 (uffi:def-type int-pointer '(* :int))
334 (uffi:def-type double-pointer '(* :double))
336 ;;; the result of a database query: a cursor through a table
337 (defstruct (oracle-result-set (:print-function print-query-cursor)
339 (:constructor %make-query-cursor))
340 (db (error "missing DB") ; db conn. this table is associated with
341 :type oracle-database
343 (stmthp (error "missing STMTHP") ; the statement handle used to create
344 ;; :type alien ; this table. owned by the QUERY-CURSOR
345 :read-only t) ; object, deallocated on CLOSE-QUERY
346 (cds) ; (error "missing CDS") ; column descriptors
347 ; :type (simple-array cd 1)
350 0 ; buffered rows: number of rows recv'd
351 :type (integer 0 #.+n-buf-rows+)) ; from the database on the last read
353 0 ; number of buffered rows returned, i.e.
354 :type (integer 0 #.+n-buf-rows+)) ; the index, within the buffered rows,
355 ; of the next row which hasn't already
358 0 ; total number of bytes recv'd from OCI
359 :type unsigned-byte) ; in all reads
360 (oci-end-seen-p nil)) ; Have we seen the end of OCI
361 ; data, i.e. OCI returning
362 ; less data than we requested?
363 ; OCI doesn't seem to like us
364 ; to try to read more data
365 ; from it after that..
368 (defun fetch-row (qc &optional (eof-errorp t) eof-value)
369 ;;(declare (optimize (speed 3)))
370 (cond ((zerop (qc-n-from-oci qc))
372 (error 'clsql-error :message
373 (format nil "no more rows available in ~S" qc))
375 ((>= (qc-n-to-dbi qc)
377 (refill-qc-buffers qc)
378 (fetch-row qc nil eof-value))
380 (let ((cds (qc-cds qc))
381 (reversed-result nil)
382 (irow (qc-n-to-dbi qc)))
383 (dotimes (icd (length cds))
384 (let* ((cd (aref cds icd))
385 (b (foreign-resource-buffer (cd-buffer cd)))
387 (let ((arb (foreign-resource-buffer (cd-indicators cd))))
388 (declare (type int-pointer arb))
389 (unless (= (uffi:deref-array arb '(:array :int) irow) -1)
390 (ecase (cd-oci-data-type cd)
392 (deref-oci-string b irow (cd-sizeof cd)))
394 (uffi:with-cast-pointer (bd b :double)
395 (uffi:deref-array bd '(:array :double) irow)))
397 (uffi:with-cast-pointer (bi b :int)
398 (uffi:deref-array bi '(:array :int) irow)))
400 (deref-oci-string b irow (cd-sizeof cd))))))))
401 (push value reversed-result)))
402 (incf (qc-n-to-dbi qc))
403 (nreverse reversed-result)))))
405 (defun refill-qc-buffers (qc)
406 (with-slots (errhp) (qc-db qc)
407 (setf (qc-n-to-dbi qc) 0)
408 (cond ((qc-oci-end-seen-p qc)
409 (setf (qc-n-from-oci qc) 0))
411 (let ((oci-code (%oci-stmt-fetch
412 (uffi:deref-pointer (qc-stmthp qc) void-pointer)
413 (uffi:deref-pointer errhp void-pointer)
415 +oci-fetch-next+ +oci-default+)))
417 (#.+oci-success+ (values))
418 (#.+oci-no-data+ (setf (qc-oci-end-seen-p qc) t)
420 (#.+oci-error+ (handle-oci-error :database (qc-db qc)
422 (uffi:with-foreign-object (rowcount :long)
423 (oci-attr-get (uffi:deref-pointer (qc-stmthp qc) void-pointer)
426 (uffi:make-null-pointer :unsigned-long)
428 (uffi:deref-pointer errhp void-pointer))
429 (setf (qc-n-from-oci qc)
430 (- (uffi:deref-pointer rowcount :long)
431 (qc-total-n-from-oci qc)))
432 (when (< (qc-n-from-oci qc) +n-buf-rows+)
433 (setf (qc-oci-end-seen-p qc) t))
434 (setf (qc-total-n-from-oci qc)
435 (uffi:deref-pointer rowcount :long)))))
438 ;; the guts of the SQL function
440 ;; (like the SQL function, but with the QUERY argument hardwired to T, so
441 ;; that the return value is always a cursor instead of a list)
443 ;; Is this a SELECT statement? SELECT statements are handled
444 ;; specially by OCIStmtExecute(). (Non-SELECT statements absolutely
445 ;; require a nonzero iteration count, while the ordinary choice for a
446 ;; SELECT statement is a zero iteration count.
448 ;; SELECT statements are the only statements which return tables. We
449 ;; don't free STMTHP in this case, but instead give it to the new
450 ;; QUERY-CURSOR, and the new QUERY-CURSOR becomes responsible for
451 ;; freeing the STMTHP when it is no longer needed.
453 (defun sql-stmt-exec (sql-stmt-string db &key types)
454 (with-slots (envhp svchp errhp)
456 (let ((stmthp (uffi:allocate-foreign-object void-pointer)))
457 (uffi:with-foreign-object (stmttype :unsigned-short)
459 (oci-handle-alloc (uffi:deref-pointer envhp void-pointer)
461 +oci-htype-stmt+ 0 +null-void-pointer-pointer+)
462 (oci-stmt-prepare (uffi:deref-pointer stmthp void-pointer)
463 (uffi:deref-pointer errhp void-pointer)
464 (uffi:convert-to-cstring sql-stmt-string)
465 (length sql-stmt-string)
466 +oci-ntv-syntax+ +oci-default+ :database db)
467 (oci-attr-get (uffi:deref-pointer stmthp void-pointer)
470 (uffi:make-null-pointer :unsigned-int)
472 (uffi:deref-pointer errhp void-pointer)
474 (let* ((select-p (= (uffi:deref-pointer stmttype :unsigned-short) 1))
475 (iters (if select-p 0 1)))
477 (oci-stmt-execute (uffi:deref-pointer svchp void-pointer)
478 (uffi:deref-pointer stmthp void-pointer)
479 (uffi:deref-pointer errhp void-pointer)
480 iters 0 +null-void-pointer+ +null-void-pointer+ +oci-default+
483 (make-query-cursor db stmthp types))
485 (oci-handle-free (uffi:deref-pointer stmthp void-pointer) +oci-htype-stmt+)
489 ;; Return a QUERY-CURSOR representing the table returned from the OCI
490 ;; operation done through STMTHP. TYPES is the argument of the same
491 ;; name from the external SQL function, controlling type conversion
492 ;; of the returned arguments.
494 (defun make-query-cursor (db stmthp types)
495 (let ((qc (%make-query-cursor :db db
497 :cds (make-query-cursor-cds db stmthp types))))
498 (refill-qc-buffers qc)
502 ;; the hairy part of MAKE-QUERY-CURSOR: Ask OCI for information
503 ;; about table columns, translate the information into a Lisp
504 ;; vector of column descriptors, and return it.
506 ;; Allegro defines several flavors of type conversion, but this
507 ;; implementation only supports the :AUTO flavor.
509 ;; A note of explanation: OCI's internal number format uses 21
510 ;; bytes (42 decimal digits). 2 separate (?) one-byte fields,
511 ;; scale and precision, are used to deduce the nature of these
512 ;; 21 bytes. See pp. 3-10, 3-26, and 6-13 of OCI documentation
515 ;; When calling OCI C code to handle the conversion, we have
516 ;; only two numeric types available to pass the return value:
517 ;; double-float and signed-long. It would be possible to
518 ;; bypass the OCI conversion functions and write Lisp code
519 ;; which reads the 21-byte field directly and decodes
520 ;; it. However this is left as an exercise for the reader. :-)
522 ;; The following table describes the mapping, based on the implicit
523 ;; assumption that C's "signed long" type is a 32-bit integer.
525 ;; Internal Values SQL Type C Return Type
526 ;; =============== ======== =============
527 ;; Precision > 0 SCALE = -127 FLOAT --> double-float
528 ;; Precision > 0 && <=9 SCALE = 0 INTEGER --> signed-long
529 ;; Precision = 0 || > 9 SCALE = 0 BIG INTEGER --> double-float
530 ;; Precision > 0 SCALE > 0 DECIMAL --> double-float
532 ;; (OCI uses 1-based indexing here.)
534 ;; KLUDGE: This should work for all other data types except those
535 ;; which don't actually fit in their fixed-width field (BLOBs and the
536 ;; like). As Winton says, we (Cadabra) don't need to worry much about
537 ;; those, since we can't reason with them, so we don't use them. But
538 ;; for a more general application it'd be good to have a more
539 ;; selective and rigorously correct test here for whether we can
540 ;; actually handle the given DEREF-DTYPE value. -- WHN 20000106
542 ;; Note: The OCI documentation doesn't seem to say whether the COLNAME
543 ;; value returned here is a newly-allocated copy which we're
544 ;; responsible for freeing, or a pointer into some system copy which
545 ;; will be freed when the system itself is shut down. But judging
546 ;; from the way that the result is used in the cdemodsa.c example
547 ;; program, it looks like the latter: we should make our own copy of
548 ;; the value, but not try to free it.
550 ;; WORKAROUND: OCI seems to return ub2 values for the
551 ;; +oci-attr-data-size+ attribute even though its documentation claims
552 ;; that it returns a ub4, and even though the associated "sizep" value
553 ;; is 4, not 2. In order to make the code here work reliably, without
554 ;; having to patch it later if OCI is ever fixed to match its
555 ;; documentation, we pre-zero COLSIZE before making the call into OCI.
557 ;; To exercise the weird OCI behavior (thereby blowing up the code
558 ;; below, beware!) try setting this value into COLSIZE, calling OCI,
559 ;; then looking at the value in COLSIZE. (setf colsize #x12345678)
563 (defun make-query-cursor-cds (database stmthp types)
564 (declare (optimize (safety 3) #+nil (speed 3))
565 (type oracle-database database)
566 (type pointer-pointer-void stmthp))
569 (unless (eq types :auto)
570 (error "unsupported TYPES value"))
571 (uffi:with-foreign-objects ((dtype-foreign :unsigned-short)
572 (parmdp ':pointer-void)
575 (colname '(* :unsigned-char))
576 (colnamelen :unsigned-long)
577 (colsize :unsigned-long)
578 (colsizesize :unsigned-long)
579 (defnp ':pointer-void))
582 (do ((icolumn 0 (1+ icolumn))
583 (cds-as-reversed-list nil))
584 ((not (eql (oci-param-get (uffi:deref-pointer stmthp void-pointer)
586 (uffi:deref-pointer errhp void-pointer)
588 (1+ icolumn) :database database)
590 (coerce (reverse cds-as-reversed-list) 'simple-vector))
591 ;; Decode type of ICOLUMNth column into a type we're prepared to
593 (oci-attr-get (uffi:deref-pointer parmdp void-pointer)
596 (uffi:make-null-pointer :int) +oci-attr-data-type+
597 (uffi:deref-pointer errhp void-pointer))
598 (let ((dtype (uffi:deref-pointer dtype-foreign :unsigned-short)))
601 (setf buffer (acquire-foreign-resource :char (* 32 +n-buf-rows+)))
602 (setf sizeof 32 dtype #.SQLT-STR))
604 ;;(oci-attr-get parmdp +oci-dtype-param+
605 ;;(addr precision) nil +oci-attr-precision+
606 ;;(uffi:deref-pointer errhp))
607 (oci-attr-get (uffi:deref-pointer parmdp void-pointer)
610 (uffi:make-null-pointer :int) +oci-attr-scale+
611 (uffi:deref-pointer errhp void-pointer))
613 ((zerop (uffi:deref-pointer scale :byte))
614 (setf buffer (acquire-foreign-resource :init +n-buf-rows+)
615 sizeof 4 ;; sizeof(int)
618 (setf buffer (acquire-foreign-resource :double +n-buf-rows+)
619 sizeof 8 ;; sizeof(double)
621 (t ; Default to SQL-STR
622 (setf (uffi:deref-pointer colsize :unsigned-long) 0
624 (oci-attr-get (uffi:deref-pointer parmdp void-pointer)
627 (uffi:make-null-pointer :int) ;; (uffi:pointer-address colsizesize)
629 (uffi:deref-pointer errhp void-pointer))
630 (let ((colsize-including-null (1+ (uffi:deref-pointer colsize :unsigned-long))))
631 (setf buffer (acquire-foreign-resource
632 :char (* +n-buf-rows+ colsize-including-null)))
633 (setf sizeof colsize-including-null))))
634 (let ((retcodes (acquire-foreign-resource :short +n-buf-rows+))
635 (indicators (acquire-foreign-resource :short +n-buf-rows+)))
636 (push (make-cd :name "col" ;(subseq colname 0 colnamelen)
641 :indicators indicators)
642 cds-as-reversed-list)
643 (oci-define-by-pos (uffi:deref-pointer stmthp void-pointer)
645 (uffi:deref-pointer errhp void-pointer)
646 (1+ icolumn) ; OCI 1-based indexing again
647 (foreign-resource-buffer buffer)
650 (foreign-resource-buffer indicators)
651 (uffi:make-null-pointer :unsigned-short)
652 (foreign-resource-buffer retcodes)
653 +oci-default+))))))))
655 ;; Release the resources associated with a QUERY-CURSOR.
657 (defun close-query (qc)
658 (oci-handle-free (uffi:deref-pointer (qc-stmthp qc) void-pointer) +oci-htype-stmt+)
659 (let ((cds (qc-cds qc)))
660 (dotimes (i (length cds))
661 (release-cd-resources (aref cds i))))
665 ;; Release the resources associated with a column description.
667 (defun release-cd-resources (cd)
668 (free-foreign-resource (cd-buffer cd))
669 (free-foreign-resource (cd-retcodes cd))
670 (free-foreign-resource (cd-indicators cd))
674 (defmethod database-name-from-spec (connection-spec (database-type (eql :oracle)))
675 (check-connection-spec connection-spec database-type (dsn user password))
676 (destructuring-bind (dsn user password) connection-spec
677 (declare (ignore password))
678 (concatenate 'string dsn "/" user)))
681 (defmethod database-connect (connection-spec (database-type (eql :oracle)))
682 (check-connection-spec connection-spec database-type (dsn user password))
683 (destructuring-bind (data-source-name user password)
685 (let ((envhp (uffi:allocate-foreign-object :pointer-void))
686 (errhp (uffi:allocate-foreign-object :pointer-void))
687 (svchp (uffi:allocate-foreign-object :pointer-void))
688 (srvhp (uffi:allocate-foreign-object :pointer-void)))
689 ;; Requests to allocate environments and handles should never
690 ;; fail in normal operation, and they're done too early to
691 ;; handle errors very gracefully (since they're part of the
692 ;; error-handling mechanism themselves) so we just assert they
694 (setf (uffi:deref-pointer envhp void-pointer) +null-void-pointer+)
697 (oci-env-create envhp +oci-default+ +null-void-pointer+
698 +null-void-pointer+ +null-void-pointer+
699 +null-void-pointer+ 0 +null-void-pointer-pointer+)
700 (oci-handle-alloc envhp
701 (c-& errhp void-pointer) +oci-htype-error+ 0
702 +null-void-pointer-pointer+))
705 (oci-initialize +oci-object+ +null-void-pointer+ +null-void-pointer+
706 +null-void-pointer+ +null-void-pointer-pointer+)
707 (ignore-errors (oci-handle-alloc +null-void-pointer+ envhp
709 +null-void-pointer-pointer+)) ;no testing return
710 (oci-env-init envhp +oci-default+ 0 +null-void-pointer-pointer+)
711 (oci-handle-alloc (uffi:deref-pointer envhp void-pointer) errhp
712 +oci-htype-error+ 0 +null-void-pointer-pointer+)
713 (oci-handle-alloc (uffi:deref-pointer envhp void-pointer) srvhp
714 +oci-htype-server+ 0 +null-void-pointer-pointer+)
715 (oci-server-attach (uffi:deref-pointer srvhp void-pointer)
716 (uffi:deref-pointer errhp void-pointer)
717 (uffi:make-null-pointer :unsigned-char)
719 (oci-handle-alloc (uffi:deref-pointer envhp void-pointer) svchp
720 +oci-htype-svcctx+ 0 +null-void-pointer-pointer+)
721 (oci-attr-set (uffi:deref-pointer svchp void-pointer)
723 (uffi:deref-pointer srvhp void-pointer) 0 +oci-attr-server+
724 (uffi:deref-pointer errhp void-pointer))
725 ;; oci-handle-alloc((dvoid *)encvhp, (dvoid **)&stmthp, OCI_HTYPE_STMT, 0, 0);
728 (let (db server-version)
729 (uffi:with-foreign-object (buf '(:array :unsigned-char #.+errbuf-len+))
730 (oci-server-version (uffi:deref-pointer svchp void-pointer)
731 (uffi:deref-pointer errhp void-pointer)
732 buf +errbuf-len+ +oci-htype-svcctx+)
733 (setf server-version (uffi:convert-from-foreign-string buf)))
734 (setq db (make-instance 'oracle-database
735 :name (database-name-from-spec connection-spec
739 :database-type :oracle
741 :dsn data-source-name
743 :server-version server-version
744 :major-version-number (major-version-from-string
747 (oci-logon (uffi:deref-pointer envhp void-pointer)
748 (uffi:deref-pointer errhp void-pointer)
750 (uffi:convert-to-cstring user) (length user)
751 (uffi:convert-to-cstring password) (length password)
752 (uffi:convert-to-cstring data-source-name) (length data-source-name)
754 ;; :date-format-length (1+ (length date-format)))))
755 (setf (slot-value db 'clsql-sys::state) :open)
756 (database-execute-command
757 (format nil "alter session set NLS_DATE_FORMAT='~A'" (date-format db)) db)
761 (defun major-version-from-string (str)
763 ((search " 10g " str)
769 ;; Close a database connection.
771 (defmethod database-disconnect ((database oracle-database))
772 (osucc (oci-logoff (uffi:deref-pointer (svchp database) void-pointer)
773 (uffi:deref-pointer (errhp database) void-pointer)))
774 (osucc (oci-handle-free (uffi:deref-pointer (envhp database) void-pointer)
776 ;; Note: It's neither required nor allowed to explicitly deallocate the
777 ;; ERRHP handle here, since it's owned by the ENVHP deallocated above,
778 ;; and was therefore automatically deallocated at the same time.
781 ;;; Do the database operation described in SQL-STMT-STRING on database
782 ;;; DB and, if the command is a SELECT, return a representation of the
783 ;;; resulting table. The representation of the table is controlled by the
785 ;;; * If QUERY is NIL, the table is returned as a list of rows, with
786 ;;; each row represented by a list.
787 ;;; * If QUERY is non-NIL, the result is returned as a QUERY-CURSOR
788 ;;; suitable for FETCH-ROW and CLOSE-QUERY
789 ;;; The TYPES argument controls the type conversion method used
790 ;;; to construct the table. The Allegro version supports several possible
791 ;;; values for this argument, but we only support :AUTO.
793 (defmethod database-query (query-expression (database oracle-database) result-types field-names)
794 (let ((cursor (sql-stmt-exec query-expression database :types :auto)))
795 ;; (declare (type (or query-cursor null) cursor))
796 (if (null cursor) ; No table was returned.
798 (do ((reversed-result nil))
800 (let* ((eof-value :eof)
801 (row (fetch-row cursor nil eof-value)))
802 (when (eq row eof-value)
804 (return (nreverse reversed-result)))
805 (push row reversed-result))))))
808 (defmethod database-create-sequence
809 (sequence-name (database oracle-database))
811 (concatenate 'string "CREATE SEQUENCE "
812 (sql-escape sequence-name))
815 (defmethod database-drop-sequence
816 (sequence-name (database oracle-database))
818 (concatenate 'string "DROP SEQUENCE "
819 (sql-escape sequence-name))
822 (defmethod database-sequence-next (sequence-name (database oracle-database))
825 (concatenate 'string "SELECT "
826 (sql-escape sequence-name)
828 ) :database database)))
830 (defmethod database-list-sequences ((database oracle-database) &key owner)
831 (mapcar #'car (database-query "select sequence_name from user_sequences"
834 (defmethod database-execute-command (sql-expression (database oracle-database))
835 (database-query sql-expression database nil nil)
837 (database-query "commit" database nil nil)
841 ;;; a column descriptor: metadata about the data in a table
842 (defstruct (cd (:constructor make-cd)
843 (:print-function print-cd))
844 ;; name of this column
845 (name (error "missing NAME") :type simple-string :read-only t)
846 ;; the size in bytes of a single element
847 (sizeof (error "missing SIZE") :type fixnum :read-only t)
848 ;; an array of +N-BUF-ROWS+ elements in C representation
849 (buffer (error "Missing BUFFER")
850 :type foreign-resource
852 ;; an array of +N-BUF-ROWS+ OCI return codes in C representation.
853 ;; (There must be one return code for every element of every
854 ;; row in order to be able to represent nullness.)
855 (retcodes (error "Missing RETCODES")
856 :type foreign-resource
858 (indicators (error "Missing INDICATORS")
859 :type foreign-resource
861 ;; the OCI code for the data type of a single element
862 (oci-data-type (error "missing OCI-DATA-TYPE")
867 (defun print-cd (cd stream depth)
868 (declare (ignore depth))
869 (print-unreadable-object (cd stream :type t)
871 ":NAME ~S :OCI-DATA-TYPE ~S :OCI-DATA-SIZE ~S"
873 (cd-oci-data-type cd)
876 (defun print-query-cursor (qc stream depth)
877 (declare (ignore depth))
878 (print-unreadable-object (qc stream :type t :identity t)
879 (prin1 (qc-db qc) stream)))
882 (defmethod database-query-result-set ((query-expression string)
883 (database oracle-database)
884 &key full-set result-types)
887 (defmethod database-dump-result-set (result-set (database oracle-database))
890 (defmethod database-store-next-row (result-set (database oracle-database) list)
893 (defmethod clsql-sys::database-start-transaction ((database oracle-database))
896 ;;(with-slots (svchp errhp) database
897 ;; (osucc (oci-trans-start (uffi:deref-pointer svchp)
898 ;; (uffi:deref-pointer errhp)
900 ;; +oci-trans-new+)))
904 (defmethod clsql-sys::database-commit-transaction ((database oracle-database))
906 (with-slots (svchp errhp) database
907 (osucc (oci-trans-commit (uffi:deref-pointer svchp void-pointer)
908 (uffi:deref-pointer errhp void-pointer)
912 (defmethod clsql-sys::database-abort-transaction ((database oracle-database))
914 (osucc (oci-trans-rollback (uffi:deref-pointer (svchp database) void-pointer)
915 (uffi:deref-pointer (errhp database) void-pointer)
919 (defparameter *constraint-types*
920 '(("NOT-NULL" . "NOT NULL")))
922 (defmethod database-output-sql ((str string) (database oracle-database))
923 (if (and (null (position #\' str))
924 (null (position #\\ str)))
925 (format nil "'~A'" str)
926 (let* ((l (length str))
927 (buf (make-string (+ l 3))))
928 (setf (aref buf 0) #\')
931 ((= i l) (setf (aref buf j) #\'))
932 (if (= j (- (length buf) 1))
933 (setf buf (adjust-array buf (+ (length buf) 1))))
934 (cond ((eql (aref str i) #\')
935 (setf (aref buf j) #\')
937 (setf (aref buf j) (aref str i)))
943 (defmethod db-type-has-bigint? ((type (eql :oracle)))
946 (defmethod db-type-has-fancy-math? ((db-type (eql :postgresql)))