89 lines
1.7 KiB
C++
89 lines
1.7 KiB
C++
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/*
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----
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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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//[_] [\_]
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*/
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#include "TupleStore3.h"
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#include "Algebras/Relation-C++/RelationAlgebra.h"
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/*
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~Constructor~
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The maxMem parameter is ignored.
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*/
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TupleStore3::TupleStore3(size_t maxMem) : rel(0){}
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/*
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~Destructor~
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*/
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TupleStore3::~TupleStore3(){
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if(rel){
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rel->DeleteAndTruncate();
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rel = 0;
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}
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}
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/*
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~AppendTuple~
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Appends a tuple to this store. The id of the tuple is
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changed by this operation. The new tuple id is also the
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return value of this function.
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*/
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TupleId TupleStore3::AppendTuple(Tuple* t){
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assert(t);
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if(!rel){
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rel = new Relation(t->GetTupleType(), true);
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}
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t->PinAttributes();
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rel->AppendTupleNoLOBs(t);
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return t->GetTupleId();
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}
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/*
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~GetTuple~
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Retrieves a tuple from this store. If no tuple with given
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id is present, 0 is returned.
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*/
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Tuple* TupleStore3::GetTuple(const TupleId tid){
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if(!rel){
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return 0;
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}
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return rel->GetTuple(tid, false);
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}
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