SQLVisitor.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/SQLVisitor.h
 
  \brief A visitor for building an SQL statement using OGR dialect.
*/
 
#ifndef __TERRALIB_OGR_INTERNAL_SQLVISITOR_H
#define __TERRALIB_OGR_INTERNAL_SQLVISITOR_H
 
// TerraLib
#include "../dataaccess/query/SQLVisitor.h"
#include "Config.h"
 
namespace te
{
  namespace gm
  {
    // Forward declaration
    class Envelope;
  }
 
  namespace ogr
  {
    /*!
      \class SQLVisitor
 
      \brief A visitor for building an SQL statement from a given Query hierarchy - OGR Driver
 
      NOTE: When the DISTINCT keyword is used, only one attribute may appear in the field list.
 
    */
 
    class TEOGREXPORT SQLVisitor : public te::da::SQLVisitor
    {
      public:
        /*! \brief Default constructor. */
        SQLVisitor(
          const te::da::SQLDialect& dialect, 
          std::string& sql, 
          const std::string& driverName );
 
        /*! \brief Destructor. */
        ~SQLVisitor() {}
 
        void visit(const te::da::DataSetName& visited);
 
        void visit(const te::da::LiteralEnvelope& visited);
 
        void visit(const te::da::PropertyName& visited);
 
        void visit(const te::da::Select& visited);
 
        void visit(const te::da::Join& visited);
 
        void visit(const te::da::JoinConditionOn& visited);
 
        void visit(const te::da::LiteralBool& visited) override;
 
        void visit(const te::da::LiteralString& visited) override;
 
        void visit(const te::da::LiteralGeom& visited) override;
        
        void visit(const te::da::LiteralDateTime& visited) override;
 
        void visit(const te::da::In& visited) override;
 
        te::gm::Envelope* getMBR();
 
      protected:
 
        te::gm::Envelope* m_bbox;
        std::string m_driverName;
    };
  }
}
 
 
#endif //__TERRALIB_OGR_INTERNAL_SQLVISITOR_H