444 lines
13 KiB
C++
444 lines
13 KiB
C++
/*
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This file is part of SECONDO.
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Copyright (C) 2013, 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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/*
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TileAlgebra includes
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*/
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#include "compose.h"
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#include "../Index/Index.h"
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#include "../t/tCellIterator.h"
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#include "../t/tint.h"
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#include "../t/treal.h"
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#include "../t/tbool.h"
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#include "../t/tstring.h"
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#include "../mt/mtCellIterator.h"
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#include "../mt/mtint.h"
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#include "../mt/mtreal.h"
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#include "../mt/mtbool.h"
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#include "../mt/mtstring.h"
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/*
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declaration of namespace TileAlgebra
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*/
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using namespace temporalalgebra;
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using namespace datetime;
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using namespace std;
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namespace TileAlgebra
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{
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/*
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Template method composeFunctiont implements the compose operator functionality
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for t datatypes.
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author: Dirk Zacher
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parameters: pArguments - a pointer to the arguments of compose operator
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rResult - reference to a Word containing the result
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message - message to distinguish call modes of composeFunctiont
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rLocal - reference to a Word to store local method information
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supplier - an Address to a supplier of information of operator tree
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return value: 0 if composeFunctiont successfully executed, otherwise FAILURE
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exceptions: -
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*/
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template <typename Type, typename Properties>
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int composeFunctiont(Word* pArguments,
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Word& rResult,
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int message,
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Word& rLocal,
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Supplier supplier)
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{
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int nRetVal = FAILURE;
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if(qp != 0 &&
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pArguments != 0)
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{
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MPoint* pMPoint = static_cast<MPoint*>(pArguments[0].addr);
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Type* pType = static_cast<Type*>(pArguments[1].addr);
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if(pMPoint != 0 &&
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pType != 0)
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{
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rResult = qp->ResultStorage(supplier);
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if(rResult.addr != 0)
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{
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typename Properties::TypeProperties::MType* pResult =
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static_cast<typename Properties::TypeProperties::MType*>(rResult.addr);
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if(pResult != 0)
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{
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pResult->SetDefined(false);
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if(pMPoint->IsDefined() &&
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pType->IsDefined())
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{
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pResult->SetDefined(true);
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pResult->StartBulkLoad();
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int components = pMPoint->GetNoComponents();
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for(int i = 0; i < components; i++)
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{
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UPoint unit(0);
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pMPoint->Get(i, unit);
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double xStart = unit.p0.GetX();
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double yStart = unit.p0.GetY();
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double xEnd = unit.p1.GetX();
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double yEnd = unit.p1.GetY();
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if(pType->IsValidLocation(xStart, yStart) &&
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pType->IsValidLocation(yEnd, yEnd))
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{
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Index<2> startIndex = pType->GetLocationIndex(xStart, yStart);
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Index<2> endIndex = pType->GetLocationIndex(xEnd, yEnd);
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if(startIndex == endIndex)
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{
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typename Properties::TypeProperties::WrapperType value;
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pType->atlocation(xStart, yStart, value);
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if(value.IsDefined())
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{
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pResult->MergeAdd(typename Properties::TypeProperties::
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UnitType(unit.timeInterval,
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value, value));
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}
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}
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else
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{
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tCellIterator<Type> cellIterator(*pType,
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xStart, yStart,
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xEnd, yEnd);
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double dx = xEnd - xStart;
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double dy = yEnd - yStart;
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DateTime startTime = unit.timeInterval.start;
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DateTime endTime = unit.timeInterval.end;
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DateTime duration = endTime - startTime;
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while(cellIterator.HasNext())
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{
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pair<double,double> p = cellIterator.Next();
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DateTime currentStartTime = startTime +
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(duration * p.first);
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DateTime currentEndTime = startTime +
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(duration * p.second);
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if(currentEndTime > currentStartTime)
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{
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Interval<Instant> interval(currentStartTime,
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currentEndTime,
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true, false);
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double delta =(p.first + p.second) / 2.0;
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double x = xStart + delta * dx;
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double y = yStart + delta * dy;
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typename Properties::TypeProperties::WrapperType value;
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pType->atlocation(x, y, value);
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if(value.IsDefined())
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{
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pResult->MergeAdd(typename Properties::TypeProperties::
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UnitType(interval, value, value));
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}
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}
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else
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{
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assert(currentStartTime == currentEndTime);
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}
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}
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}
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}
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}
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pResult->EndBulkLoad();
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}
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nRetVal = 0;
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}
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}
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}
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}
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return nRetVal;
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}
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/*
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Template method composeFunctionmt implements the compose operator functionality
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for mt datatypes.
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author: Dirk Zacher
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parameters: pArguments - a pointer to the arguments of compose operator
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rResult - reference to a Word containing the result
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message - message to distinguish call modes of composeFunctionmt
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rLocal - reference to a Word to store local method information
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supplier - an Address to a supplier of information of operator tree
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return value: 0 if composeFunctionmt successfully executed, otherwise FAILURE
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exceptions: -
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*/
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template <typename Type, typename Properties>
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int composeFunctionmt(Word* pArguments,
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Word& rResult,
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int message,
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Word& rLocal,
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Supplier supplier)
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{
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int nRetVal = FAILURE;
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if(qp != 0 &&
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pArguments != 0)
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{
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MPoint* pMPoint = static_cast<MPoint*>(pArguments[0].addr);
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Type* pType = static_cast<Type*>(pArguments[1].addr);
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if(pMPoint != 0 &&
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pType != 0)
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{
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rResult = qp->ResultStorage(supplier);
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if(rResult.addr != 0)
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{
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typename Properties::TypeProperties::MType* pResult =
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static_cast<typename Properties::TypeProperties::MType*>(rResult.addr);
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if(pResult != 0)
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{
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pResult->SetDefined(false);
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if(pMPoint->IsDefined() &&
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pType->IsDefined())
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{
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pResult->SetDefined(true);
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pResult->StartBulkLoad();
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int components = pMPoint->GetNoComponents();
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for(int i = 0; i < components; i++)
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{
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UPoint unit(0);
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pMPoint->Get(i, unit);
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double xStart = unit.p0.GetX();
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double yStart = unit.p0.GetY();
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double xEnd = unit.p1.GetX();
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double yEnd = unit.p1.GetY();
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double tStart = unit.timeInterval.start.ToDouble();
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double tEnd = unit.timeInterval.end.ToDouble();
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if(pType->IsValidLocation(xStart, yStart, tStart) &&
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pType->IsValidLocation(yEnd, yEnd, tEnd))
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{
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Index<3> startIndex = pType->GetLocationIndex(xStart, yStart,
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tStart);
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Index<3> endIndex = pType->GetLocationIndex(xEnd, yEnd,
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tEnd);
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if(startIndex == endIndex)
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{
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typename Properties::TypeProperties::WrapperType value;
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pType->atlocation(xStart, yStart, tStart, value);
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if(value.IsDefined())
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{
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pResult->MergeAdd(typename Properties::TypeProperties::
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UnitType(unit.timeInterval,
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value, value));
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}
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}
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else
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{
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DateTime startTime = unit.timeInterval.start;
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DateTime endTime = unit.timeInterval.end;
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DateTime duration = endTime - startTime;
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mtCellIterator<Type> cellIterator(*pType,
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xStart, yStart,
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xEnd, yEnd,
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startTime.ToDouble(),
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endTime.ToDouble());
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double dx = xEnd - xStart;
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double dy = yEnd - yStart;
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while(cellIterator.HasNext())
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{
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pair<double,double> p = cellIterator.Next();
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DateTime currentStartTime = startTime +
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(duration * p.first);
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DateTime currentEndTime = startTime +
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(duration * p.second);
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if(currentEndTime > currentStartTime)
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{
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Interval<Instant> interval(currentStartTime,
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currentEndTime,
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true, false);
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double delta =(p.first + p.second) / 2.0;
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double x = xStart + delta * dx;
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double y = yStart + delta * dy;
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double t = tStart + delta * duration.ToDouble();
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typename Properties::TypeProperties::WrapperType value;
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pType->atlocation(x, y, t, value);
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if(value.IsDefined())
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{
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pResult->MergeAdd(typename Properties::TypeProperties::
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UnitType(interval, value, value));
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}
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}
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else
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{
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assert(currentStartTime == currentEndTime);
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}
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}
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}
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}
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}
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pResult->EndBulkLoad();
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}
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nRetVal = 0;
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}
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}
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}
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}
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return nRetVal;
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}
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/*
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definition of composeFunctions array.
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*/
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ValueMapping composeFunctions[] =
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{
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composeFunctiont<tint, tProperties<int> >,
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composeFunctiont<treal, tProperties<double> >,
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composeFunctiont<tbool, tProperties<char> >,
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composeFunctiont<tstring, tProperties<std::string> >,
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composeFunctionmt<mtint, mtProperties<int> >,
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composeFunctionmt<mtreal, mtProperties<double> >,
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composeFunctionmt<mtbool, mtProperties<char> >,
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composeFunctionmt<mtstring, mtProperties<std::string> >,
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0
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};
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/*
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Method composeSelectFunction returns the index of specific compose function
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in composeFunctions array depending on the arguments.
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author: Dirk Zacher
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parameters: arguments - arguments of compose operator
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return value: index of specific compose function in composeFunctions
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exceptions: -
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*/
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int composeSelectFunction(ListExpr arguments)
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{
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int functionIndex = -1;
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if(arguments != 0)
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{
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NList argumentsList(arguments);
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NList argument1 = argumentsList.first();
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NList argument2 = argumentsList.second();
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if(argument1.isSymbol(MPoint::BasicType()))
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{
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const int TYPE_NAMES = 8;
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const std::string TYPE_NAMES_ARRAY[TYPE_NAMES] =
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{
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tint::BasicType(),
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treal::BasicType(),
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tbool::BasicType(),
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tstring::BasicType(),
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mtint::BasicType(),
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mtreal::BasicType(),
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mtbool::BasicType(),
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mtstring::BasicType()
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};
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for(int i = 0; i < TYPE_NAMES; i++)
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{
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if(argument2.isSymbol(TYPE_NAMES_ARRAY[i]))
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{
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functionIndex = i;
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break;
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}
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}
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}
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}
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return functionIndex;
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}
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/*
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Method composeTypeMappingFunction returns the return value type
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of compose operator in the form of a ListExpr.
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author: Dirk Zacher
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parameters: arguments - arguments of compose operator
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return value: return value type of compose operator
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exceptions: -
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*/
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ListExpr composeTypeMappingFunction(ListExpr arguments)
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{
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ListExpr type = NList::typeError("Operator compose expects "
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"a mpoint and a t type or a mt type.");
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NList argumentsList(arguments);
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if(argumentsList.hasLength(2))
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{
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std::string argument1 = argumentsList.first().str();
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std::string argument2 = argumentsList.second().str();
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if(argument1 == MPoint::BasicType() &&
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(IstType(argument2) ||
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IsmtType(argument2)))
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{
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type = NList(GetMType(argument2)).listExpr();
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}
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}
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return type;
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}
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}
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