/**
* Build an SMWQueryResult object from a SMWSparqlResultWrapper. This
* function is used to generate instance query results, and the given
* result wrapper must have an according format (one result column that
* contains URIs of wiki pages).
*
* @param $sparqlResultWrapper SMWSparqlResultWrapper
* @param $query SMWQuery, SMWQueryResults hold a reference to original query
* @return SMWQueryResult
*/
protected function getQueryResultFromSparqlResult(SMWSparqlResultWrapper $sparqlResultWrapper, SMWQuery $query)
{
$resultDataItems = array();
foreach ($sparqlResultWrapper as $resultRow) {
if (count($resultRow) > 0) {
$dataItem = SMWExporter::findDataItemForExpElement($resultRow[0]);
if (!is_null($dataItem)) {
$resultDataItems[] = $dataItem;
}
}
}
if ($sparqlResultWrapper->numRows() > $query->getLimit()) {
array_pop($resultDataItems);
$hasFurtherResults = true;
} else {
$hasFurtherResults = false;
}
$result = new SMWQueryResult($query->getDescription()->getPrintrequests(), $query, $resultDataItems, $this->m_store, $hasFurtherResults);
switch ($sparqlResultWrapper->getErrorCode()) {
case SMWSparqlResultWrapper::ERROR_NOERROR:
break;
case SMWSparqlResultWrapper::ERROR_INCOMPLETE:
$result->addErrors(array(wfMessage('smw_db_sparqlqueryincomplete')->inContentLanguage()->text()));
break;
default:
$result->addErrors(array(wfMessage('smw_db_sparqlqueryproblem')->inContentLanguage()->text()));
break;
}
return $result;
}
