Cast.h

Go to the documentation of this file.

/*  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/dataaccess/query/Cast.h
 
  \brief Cast a expression function.
*/
 
#ifndef __TERRALIB_DATAACCESS_INTERNAL_CAST_H
#define __TERRALIB_DATAACCESS_INTERNAL_CAST_H
 
// TerraLib
#include "FunctionNames.h"
#include "BinaryFunction.h"
 
namespace te
{
  namespace da
  {
    /*!
      \class Cast
      
      \brief Cast a expression function.
 
      This function is just a syntatic-suggar.
 
      \sa Function
    */
    class TEDATAACCESSEXPORT Cast : public BinaryFunction
    {
      public:
 
        TE_DEFINE_VISITABLE
 
        /*!
        \brief Constructor.
 
        \param value  Value expression.
        \param type   Output cast type expression.
        */
        Cast(Expression* value, Expression* type) : BinaryFunction(FunctionNames::sm_Cast, value, type) {}
 
        /*!
        \brief Constructor.
 
        \param value  Value expression.
        \param type   Output cast type expression.
        */
        Cast(const Expression& value, const Expression& type) : BinaryFunction(FunctionNames::sm_Cast, value, type) {}
 
        /*! \brief Copy constructor. */
        Cast(const Cast& rhs);
 
        /*! \brief Destructor. */
        ~Cast() {}
 
        /*! Assignment operator.  */
        Cast& operator=(const Cast& rhs);
 
        /*! \brief It creates a new copy of this expression. */
        Expression* clone() const;
    };
 
  } // end namespace da
}   // end namespace te
 
#endif  // __TERRALIB_DATAACCESS_INTERNAL_CAST_H