/**
* @since 2.2
*
* @return QueryEngine
*/
public function newMasterQueryEngine()
{
$engineOptions = new EngineOptions();
$circularReferenceGuard = new CircularReferenceGuard('sparql-queryengine');
$circularReferenceGuard->setMaxRecursionDepth(2);
$compoundConditionBuilder = new CompoundConditionBuilder(new DescriptionInterpreterFactory(), $engineOptions);
$compoundConditionBuilder->setCircularReferenceGuard($circularReferenceGuard);
$compoundConditionBuilder->setPropertyHierarchyLookup($this->applicationFactory->newPropertyHierarchyLookup());
$queryEngine = new QueryEngine($this->store->getConnection('sparql'), $compoundConditionBuilder, new QueryResultFactory($this->store), $engineOptions);
$cachedQueryResultPrefetcher = ApplicationFactory::getInstance()->singleton('CachedQueryResultPrefetcher');
$cachedQueryResultPrefetcher->setQueryEngine($queryEngine);
return $cachedQueryResultPrefetcher;
}
