105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
/*
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This file is part of SECONDO.
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Copyright (C) 2011, University in Hagen, Department of Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef RASTER2_ATPERIODS_H
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#define RASTER2_ATPERIODS_H
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#include <utility>
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#include <NList.h>
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#include "../msbool.h"
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#include "../msreal.h"
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#include "../msint.h"
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#include "../msstring.h"
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#include "Algebras/Temporal/TemporalAlgebra.h"
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namespace raster2 {
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extern ValueMapping atperiodsFuns[];
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ListExpr atperiodsTypeMap(ListExpr args);
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int atperiodsSelectFun(ListExpr args);
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template <typename T, typename Helper>
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int atperiodsFun
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(Word* args, Word& result, int message, Word& local, Supplier s)
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{
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typename Helper::implementation_type* pImplementationType =
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static_cast<typename Helper::implementation_type*>(args[0].addr);
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temporalalgebra::Periods* periods =
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static_cast<temporalalgebra::Periods*>(args[1].addr);
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result = qp->ResultStorage(s);
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typename Helper::implementation_type* pResult =
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static_cast<typename Helper::implementation_type*>(result.addr);
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if((pImplementationType != 0) &&
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pImplementationType->isDefined() &&
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periods->IsDefined())
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{
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if(pResult != 0)
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{
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typename Helper::implementation_type* patperiodsResult =
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pImplementationType->atperiods(*periods);
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if(patperiodsResult != 0)
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{
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swap(*pResult, *patperiodsResult);
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delete patperiodsResult;
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}
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}
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} else {
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pResult->setDefined(false);
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}
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return 0;
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}
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struct atperiodsInfo : OperatorInfo
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{
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atperiodsInfo()
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{
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name = "atperiods";
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signature = msbool::BasicType() + " atperiods "
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+ temporalalgebra::Periods::BasicType() + "-> "
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+ msbool::BasicType();
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appendSignature(msreal::BasicType() + " atperiods "
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+ temporalalgebra::Periods::BasicType() + "-> "
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+ msreal::BasicType());
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appendSignature(msint::BasicType() + " atperiods "
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+ temporalalgebra::Periods::BasicType() + "-> "
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+ msint::BasicType());
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appendSignature(msstring::BasicType() + " atperiods "
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+ temporalalgebra::Periods::BasicType() + "-> "
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+ msstring::BasicType());
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syntax = "atperiods(_)";
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meaning = "restricts values to periods";
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}
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};
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}
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#endif /* #define RASTER2_ATPERIODS_H */
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