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/ws/ogc/wms/dataaccess/DataSource.h

  \brief Data Source for WS OGC WMS

  \author Emerson Moraes
*/

#ifndef __TERRALIB_WS_OGC_WMS_DATAACCESS_DATASOURCE_H
#define __TERRALIB_WS_OGC_WMS_DATAACCESS_DATASOURCE_H

// STL
#include <map>
#include <string>
#include <memory>

//Terralib
#include "Config.h"
#include "../client/WMSClient.h"
#include "../client/DataTypes.h"
#include "../../../../dataaccess/datasource/DataSource.h"
#include "../../../../dataaccess/datasource/DataSourceCapabilities.h"

namespace te
{
  namespace ws
  {
    namespace ogc
    {
      namespace wms
      {
        namespace da
        {
        /*!
        \class DataSource

        \brief Implementation of the data source for the WMS driver.
        */
        class TEOGCWMSDATAACCESSEXPORT DataSource : public te::da::DataSource
        {
        public:
          DataSource(const std::string& connInfo);

          DataSource(const te::core::URI& uri);

          ~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;

          static void setCapabilities(const te::da::DataSourceCapabilities& capabilities);

          const te::da::SQLDialect* getDialect() const;

          te::ws::ogc::wms::WMSGetMapResponse getMap(const te::ws::ogc::wms::WMSGetMapRequest& request);

          /*!
            \brief It execute a WMS GetMap and save the result image on disk.
                   The request will be based on WMSGetMapRequest setted to this WMSLayer.

            \return std::string with saved image path.
            */
          const std::string saveGetMap(const te::ws::ogc::wms::WMSGetMapRequest &request, const std::string& filename);

          const te::ws::ogc::wms::WMSGetFeatureInfoResponse getFeatureInfo(const te::ws::ogc::wms::WMSGetFeatureInfoRequest& request);

          std::shared_ptr<te::ws::ogc::WMSClient> getWMSClient();

        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);

          std::vector<te::core::EncodingType> getEncodings(const std::string& connInfo);

        private:

          void verifyConnectionInfo() const;

        private:

          std::shared_ptr<te::ws::ogc::WMSClient> m_wms;
          bool                                    m_isOpened;
          static te::da::DataSourceCapabilities sm_capabilities;
        };
        } // end namespace da
      } // end namespace wms
    } // end namespace ogc
  } // end namespace ws
} // end namespace te

#endif // __TERRALIB_WS_OGC_WMS_DATAACCESS_DATASOURCE_H