/**
* Get the output string for a query in debugging mode.
*
* @param Query $query
*
* @return string
*/
public function getDebugQueryResult(Query $query)
{
$this->sortkeys = $query->sortkeys;
$sparqlCondition = $this->compoundConditionBuilder->setSortKeys($this->sortkeys)->buildCondition($query->getDescription());
$entries = array();
if ($sparqlCondition instanceof SingletonCondition) {
if ($sparqlCondition->condition === '') {
// all URIs exist, no querying
$sparql = 'None (no conditions).';
} else {
$condition = $this->compoundConditionBuilder->convertConditionToString($sparqlCondition);
$namespaces = $sparqlCondition->namespaces;
$sparql = $this->connection->getSparqlForAsk($condition, $namespaces);
}
} elseif ($sparqlCondition instanceof FalseCondition) {
$sparql = 'None (conditions can not be satisfied by anything).';
} else {
$condition = $this->compoundConditionBuilder->convertConditionToString($sparqlCondition);
$namespaces = $sparqlCondition->namespaces;
$options = $this->getOptions($query, $sparqlCondition);
$options['DISTINCT'] = true;
$sparql = $this->connection->getSparqlForSelect('?' . self::RESULT_VARIABLE, $condition, $options, $namespaces);
}
$sparql = str_replace(array('[', ':', ' '), array('[', ':', ' '), $sparql);
$entries['SPARQL Query'] = "<pre>{$sparql}</pre>";
return QueryOutputFormatter::formatDebugOutput('SPARQLStore', $entries, $query);
}
private function lookupResourceUriTargetFromDatabase(ExpNsResource $expNsResource)
{
$resourceUri = TurtleSerializer::getTurtleNameForExpElement($expNsResource);
$rediUri = TurtleSerializer::getTurtleNameForExpElement(Exporter::getSpecialPropertyResource('_REDI'));
$skeyUri = TurtleSerializer::getTurtleNameForExpElement(Exporter::getSpecialPropertyResource('_SKEY'));
$federateResultSet = $this->connection->select('*', "{$resourceUri} {$skeyUri} ?s OPTIONAL { {$resourceUri} {$rediUri} ?r }", array('LIMIT' => 1), array($expNsResource->getNamespaceId() => $expNsResource->getNamespace()));
return $federateResultSet->current();
}
