Union.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 Union.h

\brief Union operation.

\ingroup vp
*/

#ifndef __TERRALIB_VP_INTERNAL_UNION_H
#define __TERRALIB_VP_INTERNAL_UNION_H

//Terralib

#include "../dataaccess/dataset/DataSetType.h"
#include "../datatype/Property.h"

#include "Algorithm.h"
#include "AlgorithmParams.h"
#include "Config.h"

namespace te
{
  namespace vp
  {
    class TEVPEXPORT Union : public Algorithm
    {
    public:

      Union();

      virtual ~Union() {}

      bool executeMemory(te::vp::AlgorithmParams* mainParams);

      bool executeQuery(te::vp::AlgorithmParams* mainParams);

    protected:
     std::vector<std::pair<std::string, std::string> > getProperties(
         const std::map<std::string, te::dt::AbstractData*>& specificParams);

     bool isCollection(
         const std::map<std::string, te::dt::AbstractData*>& specificParams);

     te::da::DataSetType* getOutputDataSetType(
         te::vp::AlgorithmParams* mainParams);

     te::gm::Geometry* setGeomAsMulti(te::gm::Geometry* geom);

     std::vector<te::dt::Property*> getFirstSelectedProperties(
         const te::da::DataSetType* dataSetType,
         const std::map<std::string, te::dt::AbstractData*>& specificParams);

     std::vector<te::dt::Property*> getSecondSelectedProperties(
         const te::da::DataSetType* dataSetType,
         const std::map<std::string, te::dt::AbstractData*>& specificParams);

     te::gm::GeomType getGeomResultType(const te::gm::GeomType& firstGeom,
                                        const te::gm::GeomType& secondGeom,
                                        const bool& isCollection);

    private:

      std::map<std::string, std::string> m_firstAttrNameMap;

      std::map<std::string, std::string> m_secondAttrNameMap;

    };
  }
}
#endif // __TERRALIB_VP_INTERNAL_UNION_H