IComponentManager.h

/******************************************************************************
Este arquivo eh parte da implementacao do ambiente declarativo do middleware
Ginga (Ginga-NCL).

Direitos Autorais Reservados (c) 1989-2007 PUC-Rio/Laboratorio TeleMidia

Este programa eh software livre; voce pode redistribui-lo e/ou modificah-lo sob
os termos da Licenca Publica Geral GNU versao 2 conforme publicada pela Free
Software Foundation.

Este programa eh distribuido na expectativa de que seja util, porem, SEM
NENHUMA GARANTIA; nem mesmo a garantia implicita de COMERCIABILIDADE OU
ADEQUACAO A UMA FINALIDADE ESPECIFICA. Consulte a Licenca Publica Geral do
GNU versao 2 para mais detalhes.

Voce deve ter recebido uma copia da Licenca Publica Geral do GNU versao 2 junto
com este programa; se nao, escreva para a Free Software Foundation, Inc., no
endereco 59 Temple Street, Suite 330, Boston, MA 02111-1307 USA.

Para maiores informacoes:
ncl @ telemidia.puc-rio.br
http://www.ncl.org.br
http://www.ginga.org.br
http://www.telemidia.puc-rio.br
******************************************************************************
This file is part of the declarative environment of middleware Ginga (Ginga-NCL)

Copyright: 1989-2007 PUC-RIO/LABORATORIO TELEMIDIA, All Rights Reserved.

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License version 2 as published by
the Free Software Foundation.

This program 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 version 2 for more
details.

You should have received a copy of the GNU General Public License version 2
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA

For further information contact:
ncl @ telemidia.puc-rio.br
http://www.ncl.org.br
http://www.ginga.org.br
http://www.telemidia.puc-rio.br
*******************************************************************************/

#ifndef _IComponentManager_H_
#define _IComponentManager_H_

#include "component/IComponent.h"

#include "system/compat/SystemCompat.h"
using namespace ::br::pucrio::telemidia::ginga::core::system::compat;

#include <iostream>
#include <map>
#include <string>
using namespace std;

typedef void* CMCreator();

namespace br {
namespace pucrio {
namespace telemidia {
namespace ginga {
namespace core {
namespace cm {
    class IComponentManager {
        public:
            virtual ~IComponentManager(){};

            virtual void setUnloadComponents(bool allowUnload)=0;
            virtual void* getObject(string objectName)=0;
            virtual set<string>* getObjectsFromInterface(
                    string interfaceName)=0;

            virtual map<string, set<string>*>* getUnsolvedDependencies()=0;
            virtual bool releaseComponentFromObject(string objName)=0;
            virtual void refreshComponentDescription()=0;
            virtual map<string, IComponent*>* getComponentDescription()=0;
            virtual bool isAvailable(string objName)=0;

        private:
            virtual bool releaseComponent(void* component)=0;

        public:
            static IComponentManager* getCMInstance() {
                void* comp;
                IComponentManager* icm = NULL;
                CMCreator* cmCreator;

                icm = (IComponentManager*)(
                        SystemCompat::getComponentManagerInstance());

                if (icm == NULL) {
                    cmCreator = (CMCreator*)SystemCompat::loadComponent(
                            "libgingacccm", &comp, "createCM");

                    if (cmCreator != NULL) {
                        icm = (IComponentManager*)(cmCreator());
                        SystemCompat::setComponentManagerInstance(icm);
                    }
                }

                return (icm);
            }
    };
}
}
}
}
}
}

#endif //_IComponentManager_H_