------------------------------------------------------------------------------
-- Ada Web Server --
-- --
-- Copyright (C) 2000-2001 --
-- ACT-Europe --
-- --
-- Authors: Dmitriy Anisimkov - Pascal Obry --
-- --
-- This library is free software; you can redistribute it and/or modify --
-- it under the terms of the GNU General Public License as published by --
-- the Free Software Foundation; either version 2 of the License, or (at --
-- your option) any later version. --
-- --
-- This library is distributed in the hope that it will be useful, but --
-- WITHOUT ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
-- General Public License for more details. --
-- --
-- You should have received a copy of the GNU General Public License --
-- along with this library; if not, write to the Free Software Foundation, --
-- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
------------------------------------------------------------------------------
-- $Id: aws-dispatchers.ads,v 1.1 2003/10/05 19:59:54 Jano Exp $
-- This package provides a service to build Callbacks which can support
-- user's data. It is possible to build a new dispatcher by inheriting the
-- handler type and to provides the Dispatch routine.
with Ada.Finalization;
with AWS.Response;
with AWS.Status;
package AWS.Dispatchers is
type Handler is abstract new Ada.Finalization.Controlled with private;
procedure Initialize (Dispatcher : in out Handler);
procedure Adjust (Dispatcher : in out Handler);
procedure Finalize (Dispatcher : in out Handler);
-- Initialize/Adjust/Finalize is doing the reference counting, children
-- should just call these routines if possible. It is possible to know if
-- no more object are referenced by calling Ref_Counter below.
function Dispatch
(Dispatcher : in Handler;
Request : in Status.Data)
return Response.Data is abstract;
-- Call the appropriate inherited dispatcher
function Ref_Counter (Dispatcher : in Handler) return Natural;
-- Returns the reference counter for Handler. If 0 is returned then this
-- object is not referenced anymore, it is safe to deallocate ressources.
type Handler_Class_Access is access all Handler'Class;
procedure Free (Dispatcher : in out Handler_Class_Access);
pragma Inline (Free);
private
type Natural_Access is access all Natural;
type Handler is abstract new Ada.Finalization.Controlled with record
Ref_Counter : Natural_Access := null;
end record;
end AWS.Dispatchers;