private function makeQueryResultForInstance(RepositoryResult $repositoryResult, Query $query)
{
$resultDataItems = array();
foreach ($repositoryResult as $resultRow) {
if (count($resultRow) > 0 && $resultRow[0] instanceof ExpElement) {
$dataItem = Exporter::getInstance()->findDataItemForExpElement($resultRow[0]);
if (!is_null($dataItem)) {
$resultDataItems[] = $dataItem;
}
}
}
if ($repositoryResult->numRows() > $query->getLimit()) {
if (count($resultDataItems) > 1) {
array_pop($resultDataItems);
}
$hasFurtherResults = true;
} else {
$hasFurtherResults = false;
}
$result = new QueryResult($query->getDescription()->getPrintrequests(), $query, $resultDataItems, $this->store, $hasFurtherResults);
switch ($repositoryResult->getErrorCode()) {
case RepositoryResult::ERROR_NOERROR:
break;
case RepositoryResult::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;
}
/**
* Execute a SPARQL query and return an RepositoryResult object
* that contains the results. Compared to GenericHttpDatabaseConnector::doQuery(),
* this also supports the parameter "restricted=1" which 4Store provides
* to enforce strict resource bounds on query answering. The method also
* checks if these bounds have been met, and records this in the query
* result.
*
* @note The restricted option in 4Store mainly enforces the given soft
* limit more strictly. To disable/configure it, simply change the soft
* limit settings of your 4Store server.
*
* @param $sparql string with the complete SPARQL query (SELECT or ASK)
* @return RepositoryResult
*/
public function doQuery($sparql)
{
if ($this->repositoryClient->getQueryEndpoint() === '') {
throw new BadHttpDatabaseResponseException(BadHttpDatabaseResponseException::ERROR_NOSERVICE, $sparql, 'not specified');
}
$this->httpRequest->setOption(CURLOPT_URL, $this->repositoryClient->getQueryEndpoint());
$this->httpRequest->setOption(CURLOPT_HTTPHEADER, array('Accept: application/sparql-results+xml,application/xml;q=0.8'));
$this->httpRequest->setOption(CURLOPT_POST, true);
$defaultGraph = $this->repositoryClient->getDefaultGraph();
$parameterString = "query=" . urlencode($sparql) . "&restricted=1" . ($defaultGraph !== '' ? '&default-graph-uri=' . urlencode($defaultGraph) : '');
$this->httpRequest->setOption(CURLOPT_POSTFIELDS, $parameterString);
$httpResponse = $this->httpRequest->execute();
if ($this->httpRequest->getLastErrorCode() == 0) {
$xmlResponseParser = new XmlResponseParser();
$result = $xmlResponseParser->parse($httpResponse);
} else {
$this->mapHttpRequestError($this->repositoryClient->getQueryEndpoint(), $sparql);
$result = new RepositoryResult();
$result->setErrorCode(RepositoryResult::ERROR_UNREACHABLE);
}
foreach ($result->getComments() as $comment) {
if (strpos($comment, 'warning: hit complexity limit') === 0 || strpos($comment, 'some results have been dropped') === 0) {
$result->setErrorCode(RepositoryResult::ERROR_INCOMPLETE);
}
//else debug_zval_dump($comment);
}
return $result;
}
/**
* @see GenericHttpRepositoryConnector::doQuery
*/
public function doQuery($sparql)
{
if ($this->repositoryClient->getQueryEndpoint() === '') {
throw new BadHttpDatabaseResponseException(BadHttpDatabaseResponseException::ERROR_NOSERVICE, $sparql, 'not specified');
}
$this->httpRequest->setOption(CURLOPT_URL, $this->repositoryClient->getQueryEndpoint());
$this->httpRequest->setOption(CURLOPT_HTTPHEADER, array('Accept: application/sparql-results+xml,application/xml;q=0.8', 'Content-Type: application/x-www-form-urlencoded;charset=UTF-8'));
$this->httpRequest->setOption(CURLOPT_POST, true);
$defaultGraph = $this->repositoryClient->getDefaultGraph();
$parameterString = "query=" . urlencode($sparql) . ($defaultGraph !== '' ? '&default-graph-uri=' . urlencode($defaultGraph) : '') . '&output=xml';
$this->httpRequest->setOption(CURLOPT_POSTFIELDS, $parameterString);
$httpResponse = $this->httpRequest->execute();
if ($this->httpRequest->getLastErrorCode() == 0) {
$xmlResponseParser = new XmlResponseParser();
return $xmlResponseParser->parse($httpResponse);
}
$this->mapHttpRequestError($this->repositoryClient->getQueryEndpoint(), $sparql);
$repositoryResult = new RepositoryResult();
$repositoryResult->setErrorCode(RepositoryResult::ERROR_UNREACHABLE);
return $repositoryResult;
}
public function testGetComments()
{
$instance = new RepositoryResult(array(), array(), array('Foo'));
$this->assertContains('Foo', $instance->getComments());
}
