DataSet.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/ado/DataSet.h

  \brief DataSet class implementation for Microsoft Access driver.
*/

#ifndef __TERRALIB_ADO_INTERNAL_DATASET_H
#define __TERRALIB_ADO_INTERNAL_DATASET_H

// TerraLib
#include "../dataaccess/dataset/DataSet.h"
#include "Config.h"

// STL
#include <memory>
#include <vector>

// ADO
#import "msado15.dll" \
  no_namespace rename("EOF", "EndOfFile")

namespace te
{
  namespace da { class DataSetType; }

  namespace ado
  {
    class Transactor;

    /*!
      \class DataSet

      \brief Implementation of a dataset for the ADO driver.

      \sa te::da::DataSet
    */
    class TEADOEXPORT DataSet : public te::da::DataSet
    {
      public:

        /*!
          \brief Constructor.

          \param transactor The transactor associated to this DataSet.
          \param result     The internal ADO _RecordsetPtr.
        */
        DataSet(Transactor* t, _RecordsetPtr result);

        /*! \brief The destructor will clear the internal ADO _RecordsetPtr. */
        ~DataSet();

        te::common::TraverseType getTraverseType() const;

        te::common::AccessPolicy getAccessPolicy() const;

        std::size_t getNumProperties() const;

        int getPropertyDataType(std::size_t i) const;

        std::string getPropertyName(std::size_t i) const;

        std::string getDatasetNameOfProperty(std::size_t i) const;

        bool isEmpty() const;

        bool isConnected() const;

        std::size_t size() const;

        std::unique_ptr<te::gm::Envelope> getExtent(std::size_t i);

        bool moveNext();

        bool movePrevious();

        bool moveBeforeFirst();

        bool moveFirst();

        bool moveLast();

        bool move(std::size_t i);

        bool isAtBegin() const;

        bool isBeforeBegin() const;

        bool isAtEnd() const;

        bool isAfterEnd() const;

        char getChar(std::size_t i) const;

        unsigned char getUChar(std::size_t i) const;

        boost::int16_t getInt16(std::size_t i) const;

        boost::int32_t getInt32(std::size_t i) const;

        boost::int64_t getInt64(std::size_t i) const;

        bool getBool(std::size_t i) const;

        float getFloat(std::size_t i) const;

        double getDouble(std::size_t i) const;

        std::string getNumeric(std::size_t i) const;

        std::string getString(std::size_t i) const;

        std::unique_ptr<te::dt::ByteArray> getByteArray(std::size_t i) const;

        std::unique_ptr<te::gm::Geometry> getGeometry(std::size_t i) const;

        std::unique_ptr<te::rst::Raster> getRaster(std::size_t i) const;

        std::unique_ptr<te::dt::DateTime> getDateTime(std::size_t i) const;

        std::unique_ptr<te::dt::Array> getArray(std::size_t i) const;

        bool isNull(std::size_t i) const;

      protected:

        _RecordsetPtr m_result;               //!< The internal buffer with the result query.
        Transactor* m_t;                      //!< The DataSet Transactor.
        std::vector<int> m_datatypes;         //!< A vector of data types.
        std::vector<std::string> m_colNames;  //!< A vector of columns names.
        int m_i;                              //!< The index of the current row.
        int m_size;                           //!< The number of datasets in the collection.
        int m_ncols;                          //!< The number of properties in the collection.
    };

  } // end namespace ado
}   // end namespace te


#endif  // __TERRALIB_ADO_INTERNAL_DATASET_H