r9516: initial template for db2

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

diff --git a/db-db2/oracle-loader.lisp b/db-db2/oracle-loader.lisp
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+;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name:          oracle-loader.lisp
+;;;; Purpose:       Foreign library loader for CLSQL Oracle 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-oracle)
+
+(defparameter *oracle-lib-path*
+  (let ((oracle-home (getenv "ORACLE_HOME")))
+    (when oracle-home
+      (make-pathname :directory 
+                    (append 
+                     (pathname-directory
+                      (parse-namestring (concatenate 'string oracle-home "/")))
+                       (list "lib"))))))
+
+(defparameter *oracle-client-library-path* 
+    (uffi:find-foreign-library
+     "libclntsh"
+     `(,@(when *load-truename* (list (make-pathname :directory (pathname-directory *load-truename*))))
+       ,@(when *oracle-lib-path* (list *oracle-lib-path*))
+       "/usr/lib/oracle/10.1.0.2/client/lib/")
+     :drive-letters '("C")))
+
+(defvar *oracle-supporting-libraries* '("c")
+  "Used only by CMU. List of library flags needed to be passed to ld to
+load the Oracle client library succesfully.  If this differs at your site,
+set to the right path before compiling or loading the system.")
+
+(defvar *oracle-library-loaded* nil
+  "T if foreign library was able to be loaded successfully")
+
+(defmethod clsql-sys:database-type-library-loaded ((database-type (eql :oracle)))
+  *oracle-library-loaded*)
+
+(defmethod clsql-sys:database-type-load-foreign ((database-type (eql :oracle)))
+  (if (pathnamep *oracle-client-library-path*) 
+      (progn
+       (uffi:load-foreign-library *oracle-client-library-path*
+                                  :module "clsql-oracle"
+                                  :supporting-libraries 
+                                  *oracle-supporting-libraries*)
+       (setq *oracle-library-loaded* t))
+      (warn "Unable to load oracle client library.")))
+
+(clsql-sys:database-type-load-foreign :oracle)
+
+