RasterHandler.h

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/*  Copyright (C) 2008 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 terralib/rp/RasterHandler.h
  \brief Raster tuple.
 */
 
#ifndef __TERRALIB_RP_INTERNAL_RASTERHANDLER_H
#define __TERRALIB_RP_INTERNAL_RASTERHANDLER_H
 
#include "Config.h"
 
#include "../dataaccess/datasource/DataSource.h"
#include "../dataaccess/datasource/DataSourceTransactor.h"
#include "../dataaccess/dataset/DataSet.h"
#include "../raster/Raster.h"
 
#include <boost/noncopyable.hpp>
 
#include <memory>
 
namespace te
{
  namespace rp
  {
    /*!
      \class RasterHandler
      \brief RasterHandler
     */
    class TERPEXPORT RasterHandler : private boost::noncopyable
    {
      public :
        
        RasterHandler();
        
        ~RasterHandler();
        
        /*!
          \brief Build a instance using the given naked pointers.
          \param dataSourcePtr Data source pointer.
          \param transactorPtr A pointer to a transactor instance related to the data source pointed by dataSourcePtr.
          \param dataSetPtr A pointer to a data set instance related to the instance pointed by persistencePtr.
          \param rasterPtr A pointer to a raster instance related to the instance pointed by rasterPtr.
          \note All given pionters will be acquired and their respective objects will be deleted at desctruction time.
         */                  
        RasterHandler(
          te::da::DataSource* dataSourcePtr,
          te::da::DataSourceTransactor* transactorPtr,
          te::da::DataSet* dataSetPtr,
          te::rst::Raster* rasterPtr );            
          
        /*!
          \brief Build a instance using the given naked pointers.
          \param transactorPtr Transactor pointer.
          \param dataSetPtr A pointer to a data set instance related to the instance pointed by persistencePtr.
          \param rasterPtr A pointer to a raster instance related to the instance pointed by rasterPtr.
          \note All given pionters will be acquired and their respective objects will be deleted at desctruction time.
         */                  
        RasterHandler(
          te::da::DataSourceTransactor* transactorPtr,
          te::da::DataSet* dataSetPtr,
          te::rst::Raster* rasterPtr );    
          
        /*!
          \brief Build a instance using the given raster naked pointer.
          \param rasterPtr A pointer to a raster instance.
          \note All given pionters will be acquired and their respective objects will be deleted at desctruction time.
         */                  
        RasterHandler( te::rst::Raster* rasterPtr );           
        
        /*!
          \brief Reset the internal state (all internal pointed objects are deleted).
         */        
        void reset();
        
        /*!
          \brief Reset the internal state (all pointed objects are deleted).
          \param dataSourcePtr Data source pointer.
          \param transactorPtr A pointer to a transactor instance related to the data source pointed by dataSourcePtr.
          \param dataSetPtr A pointer to a data set instance related to the instance pointed by persistencePtr.
          \param rasterPtr A pointer to a raster instance related to the instance pointed by rasterPtr.
          \note All given pionters will be acquired and their respective objects will be deleted at desctruction time.
         */        
        void reset( 
          te::da::DataSource* dataSourcePtr,
          te::da::DataSourceTransactor* transactorPtr,
          te::da::DataSet* dataSetPtr,
          te::rst::Raster* rasterPtr ); 
          
        /*!
          \brief Reset the internal state (all pointed objects are deleted).
          \param transactorPtr A pointer to a transactor instance related to the data source pointed by dataSourcePtr.
          \param dataSetPtr A pointer to a data set instance related to the instance pointed by persistencePtr.
          \param rasterPtr A pointer to a raster instance related to the instance pointed by rasterPtr.
          \note All given pionters will be acquired and their respective objects will be deleted at desctruction time.
         */        
        void reset( 
          te::da::DataSourceTransactor* transactorPtr,
          te::da::DataSet* dataSetPtr,
          te::rst::Raster* rasterPtr );        
          
        /*!
          \brief Reset the internal state (all pointed objects are deleted).
          \param rasterPtr A pointer to a raster instance.
          \note All given pionters will be acquired and their respective objects will be deleted at desctruction time.
         */        
        void reset( te::rst::Raster* rasterPtr );           
          
        /*!
          \brief Returns a pointer the the handled raster instance or NULL if no instance is handled.
          \return Returns a pointer the the handled raster instance or NULL if no instance is handled.
         */                  
        te::rst::Raster* getRasterPtr();
        
        /*!
          \brief Relase the internal state and give the ownership to the given pointers.
          \param dataSourcePtr Data source pointer.
          \param transactorPtr A pointer to a transactor instance related to the data source pointed by dataSourcePtr.
          \param dataSetPtr A pointer to a data set instance related to the instance pointed by persistencePtr.
          \param rasterPtr A pointer to a raster instance related to the instance pointed by rasterPtr.
         */        
        void release( 
          std::unique_ptr< te::da::DataSource >& dataSourcePtr,
          std::unique_ptr< te::da::DataSourceTransactor >& transactorPtr,
          std::unique_ptr< te::da::DataSet >& dataSetPtr,
          std::unique_ptr< te::rst::Raster >& rasterPtr );
          
        /*!
          \brief Relase the internal state and give the ownership to the given external handler instance.
          \param other The external handler instance.
         */        
        void release( RasterHandler& other );          
        
      protected :
        
        mutable std::unique_ptr< te::da::DataSource > m_dataSourcePtr; //!< A pointer to a datasource instance.
        
        mutable std::unique_ptr< te::da::DataSourceTransactor > m_transactorPtr; //!< A pointer to a transactor instance that may or may not be related to data source instance pointed by m_dataSourcePtr.
        
        mutable std::unique_ptr< te::da::DataSet > m_dataSetPtr; //!< A pointer to a data set instance related to the transactor instance pointed by m_transactorPtr.
        
        mutable std::unique_ptr< te::rst::Raster > m_rasterPtr; //!< A pointer to a raster instance related to the data set instance pointed by m_dataSetPtr.        
    };
  } // end namespace rp
}   // end namespace te
 
#endif  // __TERRALIB_RP_INTERNAL_RASTERHANDLER_H