DataSource.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/ogr/DataSource.h
 
  \brief A class for data providers of OGR.
*/
 
#ifndef __TERRALIB_OGR_INTERNAL_DATASOURCE_H
#define __TERRALIB_OGR_INTERNAL_DATASOURCE_H
 
// TerraLib
#include "Config.h"
#include "../dataaccess/datasource/DataSource.h"
#include "../dataaccess/datasource/DataSourceCapabilities.h"
#include "../dataaccess/dataset/DataSetType.h"
#include "Exception.h"
 
// Forward declarations
//class OGRDataSource;
class GDALDataset;
 
namespace te
{
  namespace ogr
  {
    /*!
      \class DataSource
 
      \brief The OGR data source provider.
    */
    class TEOGREXPORT DataSource : public te::da::DataSource
    {
      public:
 
        DataSource(const std::string& connInfo);
 
        DataSource(const te::core::URI& uri);
 
        /*! \brief Virtual destructor. */
        ~DataSource();
 
        std::string getType() const;
 
        std::unique_ptr<te::da::DataSourceTransactor> getTransactor();
 
        void open();
        
        void close();
 
        bool isOpened() const;
 
        bool isValid() const;
 
        const te::da::DataSourceCapabilities& getCapabilities() const;
 
        const te::da::SQLDialect* getDialect() const;
      
        void createDataSet(te::da::DataSetType* dt, const std::map<std::string, std::string>& options);
 
        static void setDialect(te::da::SQLDialect* dialect);
 
        GDALDataset* getOGRDataSource();
 
        void createOGRDataSource();
 
        te::core::EncodingType getEncoding();
 
        void setEncoding(const te::core::EncodingType& et);
 
        void begin();
 
        void commit();
 
        void rollBack();
 
        bool isInTransaction() const;
        
        void updateCapabilities();
 
      protected:
 
        void create(const std::string& connInfo);
 
        void drop(const std::string& connInfo);
 
        bool exists(const std::string& connInfo);
 
        std::vector<std::string> getDataSourceNames(const std::string& connInfo);
 
      protected:
 
        GDALDataset* m_ogrDS;                                       //!< A pointer to OGR Data Source.
        bool m_isValid;                                             //!< True if this is a valid datasource.
        te::da::DataSourceCapabilities m_capabilities;              //!< OGR capabilities.
        static te::da::SQLDialect* sm_myDialect;                    //!< OGR SQL dialect.
        te::core::EncodingType m_encoding;                          //!< The data source encoding type.
        std::size_t m_transactionCount;                             //!< A counter to handle nested transactions
    };
 
    te::da::DataSource* Build(const te::core::URI& uri);
  }    // end namespace da
}      // end namespace te
 
#endif  // __TERRALIB_OGR_INTERNAL_DATASOURCE_H