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+;;;; -*- Mode: LISP; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; *************************************************************************
+;;;; FILE IDENTIFICATION
+;;;;
+;;;; Name:          classes.cl
+;;;; Purpose:       Classes for High-level SQL interface
+;;;; Programmers:   Kevin M. Rosenberg based on
+;;;;                 original code by Pierre R. Mai 
+;;;; Date Started:  Feb 2002
+;;;;
+;;;; $Id: classes.cl,v 1.4 2002/09/17 17:16:43 kevin Exp $
+;;;;
+;;;; This file, part of CLSQL, is Copyright (c) 2002 by Kevin M. Rosenberg
+;;;; and Copyright (c) 1999-2001 by Pierre R. Mai
+;;;;
+;;;; 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.
+;;;; *************************************************************************
+
+(declaim (optimize (debug 3) (speed 3) (safety 1) (compilation-speed 0)))
+(in-package :clsql-base-sys)
+
+
+(defclass database ()
+  ((name :initform nil :initarg :name :reader database-name)
+   (connection-spec :initform nil :initarg :connection-spec :reader connection-spec
+		    :documentation "Require to use connection pool")
+   (transaction-level :initform 0 :accessor transaction-level)
+   (transaction :initform nil :accessor transaction)
+   (conn-pool :initform nil :initarg :conn-pool :accessor conn-pool))
+  (:documentation
+   "This class is the supertype of all databases handled by CLSQL."))
+
+(defmethod print-object ((object database) stream)
+  (print-unreadable-object (object stream :type t :identity t)
+    (write-string (if (slot-boundp object 'name)
+		      (database-name object)
+		      "<unbound>")
+		  stream)))
+
+;; Closed database idea and original code comes from UncommonSQL
+
+(defclass closed-database ()
+  ((name :initarg :name :reader database-name))
+  (:documentation
+   "This class represents databases after they are closed via 'disconnect'."))
+
+(defmethod print-object ((object closed-database) stream)
+  (print-unreadable-object (object stream :type t :identity t)
+    (write-string (if (slot-boundp object 'name)
+		      (database-name object)
+		      "<unbound>")
+		  stream)))
+