153 lines
4.9 KiB
C++
153 lines
4.9 KiB
C++
/*
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----
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This file is part of SECONDO.
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Copyright (C) 2015,
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Faculty of Mathematics and 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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@author
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T. Beckmann
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@description
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see OperatorSpec
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@note
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Checked - 2020
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@history
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Version 1.0 - Created - T. Beckmann - 2018
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Version 1.1 - Added checkCellOriginal to find out which attributes still
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exists because they get deleted from some Operators. - D.Selenyi- 19.08.2020
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@todo
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Nothing
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*/
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#ifndef _DFRelHelpers_h_
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#define _DFRelHelpers_h_
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#include "Algebras/Temporal/TemporalAlgebra.h"
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#include "Algebras/Collection/CollectionAlgebra.h"
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#include "NestedList.h"
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#include "DistTypeEnum.h"
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//#define DRELDEBUG
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namespace distributed2 {
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class DArrayBase;
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}
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namespace drel {
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/*
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1 Class ~DRelHelpers~
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A class with usefull helper functions for the DRelAlgebra.
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*/
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class DRelHelpers {
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public:
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static bool isListOfTwoElemLists( ListExpr list );
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static bool isDRelDescr( ListExpr arg, ListExpr& drelType,
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ListExpr& relType, ListExpr& distType, ListExpr& drelValue );
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static bool isDRelDescr( ListExpr arg, ListExpr& drelType,
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ListExpr& relType, ListExpr& distType, ListExpr& drelValue,
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ListExpr& darrayType );
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static bool replaceDRELFUNARG( ListExpr arg, std::string type,
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ListExpr& fun );
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static bool replaceDRELFUNARG( ListExpr arg, std::string type,
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ListExpr& fun, ListExpr& map );
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static int computeSampleSize( const int totalSize );
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static int everyNthTupleForSample( const int totalSize );
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static int everyNthTupleForSample(
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const int sampleSize, const int totalSize );
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static int everyNthTupleForArray(
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const int sampleSize, const int arraySize );
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static bool compareAttributes(
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const Attribute* attr1, const Attribute* attr2 );
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static bool listOfIntAtoms( ListExpr list );
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static int getIndex( collection::Collection* vector,
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Attribute* attr );
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static int countDRel( std::string drel );
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static bool drelCheck( ListExpr list );
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static bool drelCheck( ListExpr list, ListExpr& darray );
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static bool drelCheck( ListExpr list, distributionType& type );
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static bool drelCheck( ListExpr list,
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ListExpr& darray, distributionType& type,
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int& attr, int& key );
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static ListExpr repartition4JoinRequired(
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ListExpr drel1Value, ListExpr drel2Value,
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ListExpr attr1Name, ListExpr attr2Name,
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distributionType dType1, distributionType dType2,
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ListExpr attr1List, ListExpr attr2List,
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const int dAttr1, const int dAttr2,
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const int dKey1, const int dKey2,
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bool& drel1reparti, bool& drel2reparti );
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static ListExpr removeAttrFromAttrList(
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ListExpr attrList, ListExpr attr );
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static ListExpr removeAttrFromAttrList(
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ListExpr attrList, std::string attr );
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static ListExpr removeAttrFromAttrList(
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ListExpr attrList, std::set<std::string>& names );
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static ListExpr removePartitionAttributes(
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ListExpr attrList, distributionType type );
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static ListExpr addPartitionAttributes( ListExpr attrList );
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static ListExpr getRemovePartitonAttr( distributionType type );
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template<class R, class Q, class T>
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static bool createRepartitionQuery(
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ListExpr drelType,
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R* drel1,
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T* drel2,
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ListExpr resultDistType,
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std::string attrName,
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int port,
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ListExpr& query,
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int elem1 = 1,
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int elem2 = 2,
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int streamelem = 3 );
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static ListExpr createPointerList( ListExpr type, void* ptr );
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static ListExpr createdrel2darray( ListExpr type, void* ptr );
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static bool checkCellOriginal(
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int *checkOriginal, int *checkCell, ListExpr *attrList,
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ListExpr *relType);
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};
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} // end of namespace drel
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#endif // _DFRelHelpers_h_
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