r9519: add prepared statements for postgresql

[clsql.git] / db-db2 / db2-sql.lisp

diff --git a/db-db2/db2-sql.lisp b/db-db2/db2-sql.lisp
index 788d491a76e54ff870fbac0267d11ccb4d566f98..16aa2165cf3613808749948aa2b7440843f2b237 100644 (file)
--- a/db-db2/db2-sql.lisp
+++ b/db-db2/db2-sql.lisp
@@ -18,3 +18,55 @@
 (defmethod database-initialize-database-type ((database-type (eql :db2)))
   t)
 
+(defclass db2-database (database)
+  ((henv :initform nil :allocation :class :initarg :henv :accessor henv)
+   (hdbc :initform nil :initarg :hdbc :accessor hdbc)))
+
+
+(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 (server user password) connection-spec
+    (handler-case
+       (let ((db (make-instance 'db2-database
+                   :name (database-name-from-spec connection-spec :db2)
+                   :database-type :db2)))
+         (db2-connect db server user password)
+         db)
+      (error ()        ;; Init or Connect failed
+       (error 'sql-connection-error
+              :database-type database-type
+              :connection-spec connection-spec
+              :message "Connection failed")))))
+
+
+;; API Functions
+
+(uffi:def-type handle-type cli-handle)
+(uffi:def-type handle-ptr-type (* cli-handle))
+
+(defmacro deref-vp (foreign-object)
+  `(the handle-type (uffi:deref-pointer (the handle-ptr-type ,foreign-object) cli-handle)))
+
+(defun db2-connect (db server user password)
+  (let ((henv (uffi:allocate-foreign-object cli-handle))
+       (hdbc (uffi:allocate-foreign-object cli-handle)))
+    (sql-alloc-handle SQL_HANDLE_ENV SQL_NULL_HANDLE henv)
+    (setf (slot-value db 'henv) henv)
+    (setf (slot-value db 'hdbc) hdbc)
+    
+    (sql-alloc-handle SQL_HANDLE_DBC (deref-vp henv) hdbc)
+    (uffi:with-cstrings ((native-server server)
+                        (native-user user)
+                        (native-password password))
+      (sql-connect (deref-vp hdbc)
+                  native-server SQL_NTS
+                  native-user SQL_NTS
+                  native-password SQL_NTS)))
+    db)