/**
* Ask data service to load stream provider instance.
*
* @return void
*
* @throws ODataException
*/
private function _loadStreamProvider()
{
if (is_null($this->_streamProvider)) {
$maxServiceVersion = $this->_dataService->getServiceConfiguration()->getMaxDataServiceVersionObject();
if ($maxServiceVersion->compare(new Version(3, 0)) >= 0) {
$this->_streamProvider = $this->_dataService->getService('IDataServiceStreamProvider2');
if (!is_null($this->_streamProvider) && (!is_object($this->_streamProvider) || array_search('ODataProducer\\Providers\\Stream\\IDataServiceStreamProvider2', class_implements($this->_streamProvider)) === false)) {
ODataException::createInternalServerError(Messages::dataServiceStreamProviderWrapperInvalidStream2Instance());
}
}
if (is_null($this->_streamProvider)) {
$this->_streamProvider = $this->_dataService->getService('IDataServiceStreamProvider');
if (!is_null($this->_streamProvider) && (!is_object($this->_streamProvider) || array_search('ODataProducer\\Providers\\Stream\\IDataServiceStreamProvider', class_implements($this->_streamProvider)) === false)) {
ODataException::createInternalServerError(Messages::dataServiceStreamProviderWrapperInvalidStreamInstance());
}
}
}
}
