/**
* Applies the query options to the resource(s) retrieved from the data source.
*
* @param SegmentDescriptor $segment The descriptor which holds resource(s) on which query options to be applied.
*
*/
private function applyQueryOptions(SegmentDescriptor $segment)
{
//TODO: I'm not really happy with this..i think i'd rather keep the result the QueryResult
//not even bother with the setCountValue stuff (shouldn't counts be on segments?)
//and just work with the QueryResult in the object model serializer
$result = $segment->getResult();
if (!$result instanceof QueryResult) {
//If the segment isn't a query result, then there's no paging or counting to be done
return;
}
// Note $inlinecount=allpages means include the total count regardless of paging..so we set the counts first
// regardless if POData does the paging or not.
if ($this->request->queryType == QueryType::ENTITIES_WITH_COUNT()) {
if ($this->providers->handlesOrderedPaging()) {
$this->request->setCountValue($result->count);
} else {
$this->request->setCountValue(count($result->results));
}
}
//Have POData perform paging if necessary
if (!$this->providers->handlesOrderedPaging() && !empty($result->results)) {
$result->results = $this->performPaging($result->results);
}
//a bit surprising, but $skip and $top affects $count so update it here, not above
//IE data.svc/Collection/$count?$top=10 returns 10 even if Collection has 11+ entries
if ($this->request->queryType == QueryType::COUNT()) {
if ($this->providers->handlesOrderedPaging()) {
$this->request->setCountValue($result->count);
} else {
$this->request->setCountValue(count($result->results));
}
}
$segment->setResult($result->results);
}
/**
* Checks whether etag headers are allowed for this request.
*
* @return boolean True if ETag header (If-Match or If-NoneMatch)
* is allowed for the request, False otherwise.
*/
public function isETagHeaderAllowed()
{
return $this->lastSegment->isSingleResult() && $this->queryType != QueryType::COUNT() && !$this->isLinkUri() && (is_null($this->_rootProjectionNode) || !$this->_rootProjectionNode->isExpansionSpecified());
}
/**
* Create SegmentDescriptor for the first segment
*
* @param string $segmentIdentifier The identifier part of the first segment
* @param string $keyPredicate The predicate part of the first segment if any else NULL
* @param boolean $checkRights Whether to check the rights on this segment
*
* @return SegmentDescriptor Descriptor for the first segment
*
* @throws ODataException Exception if any validation fails
*/
private function _createFirstSegmentDescriptor($segmentIdentifier, $keyPredicate, $checkRights)
{
$descriptor = new SegmentDescriptor();
$descriptor->setIdentifier($segmentIdentifier);
if ($segmentIdentifier === ODataConstants::URI_METADATA_SEGMENT) {
$this->_assertion(is_null($keyPredicate));
$descriptor->setTargetKind(TargetKind::METADATA());
return $descriptor;
}
if ($segmentIdentifier === ODataConstants::URI_BATCH_SEGMENT) {
$this->_assertion(is_null($keyPredicate));
$descriptor->setTargetKind(TargetKind::BATCH());
return $descriptor;
}
if ($segmentIdentifier === ODataConstants::URI_COUNT_SEGMENT) {
throw ODataException::createBadRequestError(Messages::segmentParserSegmentNotAllowedOnRoot(ODataConstants::URI_COUNT_SEGMENT));
}
if ($segmentIdentifier === ODataConstants::URI_LINK_SEGMENT) {
throw ODataException::createBadRequestError(Messages::segmentParserSegmentNotAllowedOnRoot(ODataConstants::URI_LINK_SEGMENT));
}
$resourceSetWrapper = $this->providerWrapper->resolveResourceSet($segmentIdentifier);
if ($resourceSetWrapper === null) {
throw ODataException::createResourceNotFoundError($segmentIdentifier);
}
$descriptor->setTargetResourceSetWrapper($resourceSetWrapper);
$descriptor->setTargetResourceType($resourceSetWrapper->getResourceType());
$descriptor->setTargetSource(TargetSource::ENTITY_SET);
$descriptor->setTargetKind(TargetKind::RESOURCE());
if ($keyPredicate !== null) {
$keyDescriptor = $this->_createKeyDescriptor($segmentIdentifier . '(' . $keyPredicate . ')', $resourceSetWrapper->getResourceType(), $keyPredicate);
$descriptor->setKeyDescriptor($keyDescriptor);
if (!$keyDescriptor->isEmpty()) {
$descriptor->setSingleResult(true);
}
}
if ($checkRights) {
$resourceSetWrapper->checkResourceSetRightsForRead($descriptor->isSingleResult());
}
return $descriptor;
}