r9517: initial rename to db2 files

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

diff --git a/db-db2/db2-loader.lisp b/db-db2/db2-loader.lisp
new file mode 100644 (file)
index 0000000..0e53a31
--- /dev/null
+++ b/db-db2/db2-loader.lisp
@@ -0,0 +1,59 @@
+;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name:          db2-loader.lisp
+;;;; Purpose:       Foreign library loader for CLSQL Db2 interface
+;;;;
+;;;; $Id$
+;;;;
+;;;; This file is part of CLSQL.
+;;;;
+;;;; CLSQL users are granted the rights to distribute and use this software
+;;;; as governed by the terms of the Lisp Lesser GNU Public License
+;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
+;;;; *************************************************************************
+
+(in-package #:clsql-db2)
+
+(defparameter *db2-lib-path*
+  (let ((db2-home (getenv "DB2_HOME")))
+    (when db2-home
+      (make-pathname :directory 
+                    (append 
+                     (pathname-directory
+                      (parse-namestring (concatenate 'string db2-home "/")))
+                       (list "lib"))))))
+
+(defparameter *db2-client-library-path* 
+    (uffi:find-foreign-library
+     "libclntsh"
+     `(,@(when *load-truename* (list (make-pathname :directory (pathname-directory *load-truename*))))
+       ,@(when *db2-lib-path* (list *db2-lib-path*))
+       "/usr/lib/db2/10.1.0.2/client/lib/")
+     :drive-letters '("C")))
+
+(defvar *db2-supporting-libraries* '("c")
+  "Used only by CMU. List of library flags needed to be passed to ld to
+load the Db2 client library succesfully.  If this differs at your site,
+set to the right path before compiling or loading the system.")
+
+(defvar *db2-library-loaded* nil
+  "T if foreign library was able to be loaded successfully")
+
+(defmethod clsql-sys:database-type-library-loaded ((database-type (eql :db2)))
+  *db2-library-loaded*)
+
+(defmethod clsql-sys:database-type-load-foreign ((database-type (eql :db2)))
+  (if (pathnamep *db2-client-library-path*) 
+      (progn
+       (uffi:load-foreign-library *db2-client-library-path*
+                                  :module "clsql-db2"
+                                  :supporting-libraries 
+                                  *db2-supporting-libraries*)
+       (setq *db2-library-loaded* t))
+      (warn "Unable to load db2 client library.")))
+
+(clsql-sys:database-type-load-foreign :db2)
+
+