82 lines
2.3 KiB
C++
82 lines
2.3 KiB
C++
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/*
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CONFIGRULES.hpp - interface for rule based configuration
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Copyright (C) CinelerraCV
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2007, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/** @file configrules.hpp
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** Interface for accessing rule based configuration.
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** By using the Query template, you can pose a query in prolog syntax and get some
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** existing or newly created object fulfilling the requested predicates. The actual
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** implementation is hidden behind the #instance (Singleton factory). As of 1/2008,
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** it is \i planned to use an embedded YAP Prolog system at some point in the future,
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** for now we use a \link MockConfigRules mock implementation \endlink employing a
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** preconfigured Map.
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**
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** Fully implementing this facility would require the participating objects to register capabilities
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** they want to provide, together with functors carrying out the neccessary configuration steps.
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** All details and consequences of this approach still have to be worked out...
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**
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** @see cinelerra::Query
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** @see mobject::session::DefsManager
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** @see asset::StructFactory
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**
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*/
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#ifndef CINELERRA_CONFIGRULES_H
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#define CINELERRA_CONFIGRULES_H
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#include "common/query.hpp"
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#include "common/singleton.hpp"
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#include <string>
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namespace cinelerra
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{
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using std::string;
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/**
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* Generic query interface for retrieving objects matching
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* some capability query
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*/
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class ConfigRules
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{
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protected:
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ConfigRules ();
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friend class cinelerra::singleton::StaticCreate<ConfigRules>;
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public:
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static Singleton<ConfigRules> instance;
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};
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namespace query
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{
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} // namespace query
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} // namespace cinelerra
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#endif
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