SequenceLoaderStrategy.h

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/*  Copyright (C) 2001-2009 National Institute For Space Research (INPE) - Brazil.

    This file is part of the TerraLib - a Framework for building GIS enabled applications.

    TerraLib is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License,
    or (at your option) any later version.

    TerraLib 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with TerraLib. See COPYING. If not, write to
    TerraLib Team at <terralib-team@terralib.org>.
 */

/*!
  \file SequenceLoaderStrategy.h

  \brief This class implements the main functions necessary to
        save and load the graph data and metadata information
        using as strategy a "order by" to create a sequence
        of objects.
*/

#ifndef __TERRALIB_GRAPH_INTERNAL_SEQUENCELOADERSTRATEGY_H
#define __TERRALIB_GRAPH_INTERNAL_SEQUENCELOADERSTRATEGY_H

// Terralib Includes
#include "../Config.h"
#include "../Enums.h"
#include "AbstractGraphLoaderStrategy.h"

// STL Includes
#include <string>

namespace te
{
  // Forward declarations
  namespace da 
  { 
    class DataSet;
  }

  namespace graph
  {
    //forward declarations
    class AbstractGraph;
    class GraphCache;
    class GraphData;
    class GraphMetadata;

    /*!
      \class SequenceLoaderStrategy

      \brief This class implements the main functions necessary to
        save and load the graph data and metadata information
        using as strategy a "order by" to create a sequence
        of objects.

      \sa AbstractGraphLoaderStrategy
    */

    class TEGRAPHEXPORT SequenceLoaderStrategy : public AbstractGraphLoaderStrategy
    {
      public:

        /*! \brief Default constructor. */
        SequenceLoaderStrategy(te::graph::GraphMetadata* metadata);

        /*! \brief Default destructor. */
        virtual ~SequenceLoaderStrategy();

         /** @name Database Box Graph Loader Strategy Methods
        *  Method used to manager a graph data
        */
        //@{

        /*!
        \brief Functio used to load a group of vertex elements given a base element

        \param vertexId   Attribute used to identify the base element

        \param g          Pointer to a graph, parent of this element

        \param gc         This is a optional attribute, if present the cache will be check if the already been loaded

        */
        virtual void loadDataByVertexId(int vertexId, te::graph::AbstractGraph* g, te::graph::GraphCache* gc = 0);

        /*!
        \brief Functio used to load a group of edges elements given a base element

        \param edgeId     Attribute used to identify the base element

        \param g          Pointer to a graph, parent of this element

        \param gc         This is a optional attribute, if present the cache will be check if the already been loaded

        */
        virtual void loadDataByEdgeId(int edgeId, te::graph::AbstractGraph* g, te::graph::GraphCache* gc = 0);

        //@}
    };
  } // end namespace graph
} // end namespace te

#endif // __TERRALIB_GRAPH_INTERNAL_SEQUENCELOADERSTRATEGY_H