68 lines
1.7 KiB
C++
68 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) 2021,
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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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*/
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#include "ResultIteratorPostgres.h"
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namespace BasicEngine {
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/*
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1.1 Is a new tuple available in the iterator
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*/
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bool ResultIteratorPostgres::hasNextTuple() {
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return currentTuple < totalTuples;
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}
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/*
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1.2 Return the next tuple from the iterator
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*/
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Tuple* ResultIteratorPostgres::getNextTuple() {
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Tuple* result = basicTuple->Clone();
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for(size_t i = 0; i < attributeInstances.size(); i++) {
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Attribute* attr = attributeInstances[i]->Clone();
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if(PQgetisnull(res, currentTuple, i)) {
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attr->SetDefined(false);
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} else {
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char* value = PQgetvalue(res, currentTuple, i);
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attr->ReadFromString(value);
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attr->SetDefined(true);
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}
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result->PutAttribute(i, attr);
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}
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currentTuple++;
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return result;
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}
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}; // End namespace
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