public function loadDatasetMetaData(DataControllerCallContext $callcontext, DatasetMetaData $dataset)
{
$environment_metamodel = data_controller_get_environment_metamodel();
$datasource = $environment_metamodel->getDataSource($dataset->datasourceName);
$queryRequest = new DatasetQueryRequest($dataset->name);
// we do not need to return any records
$queryRequest->setPagination(0);
$statements = $this->prepareDatasetQueryStatements($callcontext, $queryRequest);
$sql = $this->assembleDatasetQueryStatements($callcontext, $queryRequest, $statements);
// applying pagination
$this->applyPagination($queryRequest, $sql);
$loadedDatasetMetaData = $this->processDatasetMetaData($callcontext, $datasource, $sql);
// processing loaded columns
$dataset->initializeColumnsFrom($loadedDatasetMetaData->columns);
}