/**
* Process the $skiptoken option in the request and update the request
* description, this function requires _processOrderBy method to be
* already invoked.
*
* @return void
*
* @throws ODataException Throws bad request error in the following cases
* (1) If $skiptoken cannot be applied to the
* resource targetted by the request uri
* (2) If paging is not enabled for the resource
* targetted by the request uri
* (3) If parsing of $skiptoken fails
* (4) If capability negotiation over version fails
*/
private function _processSkipToken()
{
$skipToken = $this->_dataService->getHost()->getQueryStringItem(ODataConstants::HTTPQUERY_STRING_SKIPTOKEN);
if (!is_null($skipToken)) {
if (!$this->_pagingApplicable) {
ODataException::createBadRequestError(Messages::queryProcessorSkipTokenNotAllowed());
}
if (!$this->_isSSPagingRequired()) {
ODataException::createBadRequestError(Messages::queryProcessorSkipTokenCannotBeAppliedForNonPagedResourceSet());
}
$internalOrderByInfo = $this->_requestDescription->getInternalOrderByInfo();
//assert($internalOrderByInfo != null)
$targetResourceType = $this->_requestDescription->getTargetResourceType();
//assert($targetResourceType != null)
try {
$internalSkipTokenInfo = SkipTokenParser::parseSkipTokenClause($targetResourceType, $internalOrderByInfo, $skipToken);
$this->_requestDescription->setInternalSkipTokenInfo($internalSkipTokenInfo);
$this->_requestDescription->raiseMinimumVersionRequirement(2, 0, $this->_dataService);
$this->_requestDescription->raiseResponseVersion(2, 0, $this->_dataService);
} catch (ODataException $odataException) {
throw $odataException;
}
}
}