X-Git-Url: http://git.kpe.io/?a=blobdiff_plain;f=interfaces%2Fpostgresql%2Fpostgresql-sql.cl;h=4104afa13048ba37f1c421c2a0c36ddfb9f418dd;hb=a8074fe2035d97f5178c41104dd44c839987c380;hp=ce4641960b753dd5101ea5ee44f5dd2322535554;hpb=21a11d58a1d421db0c53a063178dd2bc02663a15;p=clsql.git

diff --git a/interfaces/postgresql/postgresql-sql.cl b/interfaces/postgresql/postgresql-sql.cl
index ce46419..4104afa 100644
--- a/interfaces/postgresql/postgresql-sql.cl
+++ b/interfaces/postgresql/postgresql-sql.cl
@@ -8,7 +8,7 @@
 ;;;;                Original code by Pierre R. Mai 
 ;;;; Date Started:  Feb 2002
 ;;;;
-;;;; $Id: postgresql-sql.cl,v 1.9 2002/03/25 23:48:46 kevin Exp $
+;;;; $Id: postgresql-sql.cl,v 1.14 2002/04/23 18:28:02 kevin Exp $
 ;;;;
 ;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
 ;;;; and Copyright (c) 1999-2001 by Pierre R. Mai
@@ -22,7 +22,7 @@
 (in-package :cl-user)
 
 (defpackage :clsql-postgresql
-    (:use :common-lisp :clsql-sys :postgresql)
+    (:use :common-lisp :clsql-sys :postgresql :clsql-uffi)
     (:export #:postgresql-database)
     (:documentation "This is the CLSQL interface to PostgreSQL."))
 
@@ -30,71 +30,38 @@
 
 ;;; Field conversion functions
 
-(defun canonicalize-types (types num-fields res-ptr)
-  (cond
-   ((if (listp types)
-	(let ((length-types (length types))
-	      (new-types '()))
-	  (loop for i from 0 below num-fields
-	      do
-		(if (>= i length-types)
-		    (push t new-types) ;; types is shorted than num-fields
-		  (push
-		   (case (nth i types)
-		     ((:int :long :double t)
-		      (nth i types))
-		     (t
-		      t))
-		   new-types)))
-	  (nreverse new-types))))
-   ((eq types :auto)
-    (let ((new-types '()))
-      (dotimes (i num-fields)
-	(declare (fixnum i))
-	(let* ((type (PQftype res-ptr i)))
-	  (push
-	   (case type
-	     ((#.pgsql-ftype#bytea
-	       #.pgsql-ftype#int2
-	       #.pgsql-ftype#int4)
-	      :int)
-	     ((#.pgsql-ftype#float4
-	       #.pgsql-ftype#float8)
-	      :double)
-	     (otherwise
-	      t))
-	   new-types)))
+(defun make-type-list-for-auto (num-fields res-ptr)
+  (let ((new-types '()))
+    (dotimes (i num-fields)
+      (declare (fixnum i))
+      (let* ((type (PQftype res-ptr i)))
+	(push
+	 (case type
+	   ((#.pgsql-ftype#bytea
+	     #.pgsql-ftype#int2
+	     #.pgsql-ftype#int4)
+	    :int32)
+	   (#.pgsql-ftype#int8
+	    :int64)
+	   ((#.pgsql-ftype#float4
+	     #.pgsql-ftype#float8)
+	    :double)
+	   (otherwise
+	    t))
+	 new-types)))
       (nreverse new-types)))
-   (t
-    nil)))
-
-
-(uffi:def-function "atoi"
-    ((str :cstring))
-  :returning :int)
-
-(uffi:def-function "atol"
-    ((str :cstring))
-  :returning :long)
-
-(uffi:def-function "atof"
-    ((str :cstring))
-  :returning :double)
-
-(defun convert-raw-field (char-ptr types index)
-  (let ((type (if (listp types)
-		  (nth index types)
-		  types)))
-    (case type
-      (:int
-       (atoi char-ptr))
-      (:long
-       (atol char-ptr))
-      (:double
-       (atof char-ptr))
-      (otherwise
-       (uffi:convert-from-foreign-string char-ptr)))))
 
+(defun canonicalize-types (types num-fields res-ptr)
+  (if (null types)
+      nil
+      (let ((auto-list (make-type-list-for-auto num-fields res-ptr)))
+	(cond
+	  ((listp types)
+	   (canonicalize-type-list types auto-list))
+	  ((eq types :auto)
+	   auto-list)
+	  (t
+	   nil)))))
 
 (defun tidy-error-message (message)
   (unless (stringp message)
@@ -307,3 +274,57 @@
           finally
             (incf (postgresql-result-set-tuple-index result-set))
             (return list)))))
+
+;;; Large objects support (Marc B)
+
+(defmethod database-create-large-object ((database postgresql-database))
+  (lo-create (database-conn-ptr database)
+	     (logior postgresql::+INV_WRITE+ postgresql::+INV_READ+)))
+
+;; (MB)the begin/commit/rollback stuff will be removed when with-transaction wil be implemented
+(defmethod database-write-large-object ( object-id (data string) (database postgresql-database))
+  (let ((ptr (database-conn-ptr database))
+	(length (length data))
+	(result nil)
+	(fd nil))
+    (unwind-protect
+       (progn 
+	 (database-execute-command "begin" database)
+	 (setf fd (lo-open ptr object-id postgresql::+INV_WRITE+))
+	 (when (>= fd 0)
+	   (when (= (lo-write ptr fd data length) length)
+	     (setf result t))))
+      (progn
+	(when (and fd (>= fd 0))
+	  (lo-close ptr fd))
+	(database-execute-command (if result "commit" "rollback") database)))
+    result))
+
+;; (MB) the begin/commit/rollback stuff will be removed when with-transaction wil be implemented
+(defmethod database-read-large-object (object-id (database postgresql-database))
+  (let ((ptr (database-conn-ptr database))
+	(buffer nil)
+	(result nil)
+	(length 0)
+	(fd nil))
+    (unwind-protect
+       (progn
+	 (database-execute-command "begin" database)
+	 (setf fd (lo-open ptr object-id postgresql::+INV_READ+))
+	 (when (>= fd 0)
+	   (setf length (lo-lseek ptr fd 0 2))
+	   (lo-lseek ptr fd 0 0)
+	   (when (> length 0)
+	     (setf buffer (uffi:allocate-foreign-string 
+			   length :unsigned t))
+	     (when (= (lo-read ptr fd buffer length) length)
+	       (setf result (uffi:convert-from-foreign-string
+			     buffer :length length :null-terminated-p nil))))))
+      (progn
+	(when buffer (uffi:free-foreign-object buffer))
+	(when (and fd (>= fd 0)) (lo-close ptr fd))
+	(database-execute-command (if result "commit" "rollback") database)))
+    result))
+
+(defmethod database-delete-large-object (object-id (database postgresql-database))
+  (lo-unlink (database-conn-ptr database) object-id))