/**
* Process the $filter option in the request and update request decription.
*
* @return void
*
* @throws ODataException Throws error in the following cases:
* (1) If $filter cannot be applied to the
* resource targeted by the request uri
* (2) If any error occured while parsing and
* translating the odata $filter expression
* to expression tree
* (3) If any error occured while generating
* php expression from expression tree
*/
private function _processFilter()
{
$filter = $this->service->getHost()->getQueryStringItem(ODataConstants::HTTPQUERY_STRING_FILTER);
if (is_null($filter)) {
return;
}
$kind = $this->request->getTargetKind();
if (!($kind == TargetKind::RESOURCE() || $kind == TargetKind::COMPLEX_OBJECT() || $this->request->queryType == QueryType::COUNT())) {
throw ODataException::createBadRequestError(Messages::queryProcessorQueryFilterOptionNotApplicable());
}
$resourceType = $this->request->getTargetResourceType();
$expressionProvider = $this->service->getProvidersWrapper()->getExpressionProvider();
$filterInfo = ExpressionParser2::parseExpression2($filter, $resourceType, $expressionProvider);
$this->request->setFilterInfo($filterInfo);
}
