115 lines
3.0 KiB
C++
115 lines
3.0 KiB
C++
/*
|
|
This file is part of SECONDO.
|
|
|
|
Copyright (C) 2013, University in Hagen, Department of Computer Science,
|
|
Database Systems for New Applications.
|
|
|
|
SECONDO is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
SECONDO 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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with SECONDO; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
*/
|
|
|
|
#ifndef TILEALGEBRA_FROMREGION_H
|
|
#define TILEALGEBRA_FROMREGION_H
|
|
|
|
/*
|
|
SECONDO includes
|
|
|
|
*/
|
|
|
|
#include "AlgebraTypes.h"
|
|
#include "Operator.h"
|
|
#include "QueryProcessor.h"
|
|
#include "Algebras/Spatial/SpatialAlgebra.h"
|
|
#include "Stream.h"
|
|
|
|
/*
|
|
TileAlgebra includes
|
|
|
|
*/
|
|
|
|
#include "../Constants.h"
|
|
#include "../grid/tgrid.h"
|
|
#include "../t/tbool.h"
|
|
|
|
/*
|
|
declaration of namespace TileAlgebra
|
|
|
|
*/
|
|
|
|
namespace TileAlgebra
|
|
{
|
|
|
|
/*
|
|
Struct fromregionInfo describes name, syntax, meaning and signature
|
|
of TileAlgebra operator fromregion.
|
|
|
|
author: Dirk Zacher
|
|
|
|
*/
|
|
|
|
struct fromregionInfo : OperatorInfo
|
|
{
|
|
fromregionInfo()
|
|
{
|
|
name = "fromregion";
|
|
syntax = "fromregion(_,_)";
|
|
meaning = "Creates a stream of tbool objects from a region and a grid.";
|
|
signature = Region::BasicType() + " x " +
|
|
tgrid::BasicType() +
|
|
RIGHT_ARROW + Stream<tbool>::BasicType() +
|
|
"(" + tbool::BasicType() + ")";
|
|
}
|
|
};
|
|
|
|
/*
|
|
Method fromregionFunction implements the fromregion operator functionality.
|
|
|
|
author: Dirk Zacher
|
|
parameters: pArguments - a pointer to the arguments of fromregion operator
|
|
rResult - reference to a Word containing the result
|
|
message - message to distinguish call modes of fromregionFunction
|
|
rLocal - reference to a Word to store local method information
|
|
supplier - an Address to a supplier of information of operator tree
|
|
return value: 0 if fromregionFunction successfully executed,
|
|
YIELD if rResult contains a stream element (execution continued),
|
|
CANCEL if all stream elements of the result already returned,
|
|
FAILURE if an error occured
|
|
exceptions: -
|
|
|
|
*/
|
|
|
|
int fromregionFunction(Word* pArguments,
|
|
Word& rResult,
|
|
int message,
|
|
Word& rLocal,
|
|
Supplier supplier);
|
|
|
|
/*
|
|
Method fromregionTypeMappingFunction returns the return value type
|
|
of fromregion operator in the form of a ListExpr.
|
|
|
|
author: Dirk Zacher
|
|
parameters: arguments - arguments of fromregion operator
|
|
return value: return value type of fromregion operator
|
|
exceptions: -
|
|
|
|
*/
|
|
|
|
ListExpr fromregionTypeMappingFunction(ListExpr arguments);
|
|
|
|
}
|
|
|
|
#endif // TILEALGEBRA_FROMREGION_H
|