Metadata.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 _Metadata_H_
#define _Metadata_H_

#include "IMetadata.h"

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

#include <fstream>
#include <string>
using namespace std;

namespace br {
namespace pucrio {
namespace telemidia {
namespace ginga {
namespace core {
namespace dataprocessing {
namespace ncl {
    class Metadata : public IMetadata {
        private:
            ofstream* mdFile;
            string name;
            double totalLength;
            double targetTotalLen;
            string baseUri;
            string mdUri;
            IDataFile* rootObject;
            map<int, IDataFile*>* dataFiles;

        public:
            Metadata(string name);
            virtual ~Metadata();

            string getRootUri();
            string getName();
            double getTotalLength();
            void setTargetTotalLength(double targetSize);
            bool isConsolidated();

            void setBaseUri(string uri);
            string getBaseUri();

            void setRootObject(IDataFile* rootObject);
            IDataFile* getRootObject();

            void addDataFile(IDataFile* dataObject);
            IDataFile* getDataFile(int structureId);
            map<int, IDataFile*>* getDataFiles();

        private:
            bool updateTotalLength(IDataFile* dataFile);

        public:
            vector<StreamData*>* createNCLSections();

        private:
            bool createMetadataFile();
            void closeMetadataFile();

            void openMetadataElement();
            void closeMetadataElement();

            void openBaseDataElement();
            void closeBaseDataElement();

            void writeRootElement(
                    string sId, string uri, string size, string componentTag);

            void writeDataElement(
                    string sId, string uri, string size, string componentTag);

            void copyContent(string uri, char* stream, int fileSize);

            StreamData* createStreamData(
                    int structId,
                    int structType,
                    string uri,
                    int fileSize);

        public:
            static int getFileSize(string uri);
    };
}
}
}
}
}
}
}

#endif //_Metadata_H_