Пример #1
0
 /**
  * Applies the query options to the resource(s) retrieved from the data source.
  * 
  * @param SegmentDescriptor &$segmentDescriptor The descriptor which holds 
  *                                              resource(s) on which query
  *                                              options to be applied.
  * 
  * @return void
  */
 private function _applyQueryOptions(SegmentDescriptor &$segmentDescriptor)
 {
     // This function will not set RequestDescription::Count value if IDSQP2::canApplyQueryOptions
     // returns false, this function assumes IDSQP2 has already set the count value in the global
     // variable named _odata_server_count. temporary fix for Drupal OData Plugin support
     global $_odata_server_count;
     $result = $segmentDescriptor->getResult();
     //Apply $filter option
     if (!is_null($result)) {
         $internalFilterInfo = $this->_requestDescription->getInternalFilterInfo();
         if (!is_null($internalFilterInfo)) {
             if (!$internalFilterInfo->isCustomExpression()) {
                 // The QP implementation is not going to perform the filtering
                 // opted for PHPExpressionProvider so run the filtering.
                 $filterFunction = $internalFilterInfo->getFilterFunction()->getReference();
                 if (is_array($result)) {
                     $count = count($result);
                     for ($i = 0; $i < $count; $i++) {
                         if (!$filterFunction($result[$i])) {
                             unset($result[$i]);
                         }
                     }
                     $result = array_merge($result);
                 } else {
                     if (!$filterFunction($result)) {
                         unset($result);
                         $result = null;
                     }
                 }
                 unset($filterFunction);
             } else {
                 // The QP2 implementation performed the filtering so don't perform
                 // filtering using library generated filter function.
             }
             unset($internalFilterInfo);
         }
     }
     // $inlinecount=allpages should ignore the query options
     // $skiptoken, $top and $skip so take count before applying these options
     if ($this->_requestDescription->getRequestCountOption() != RequestCountOption::NONE && is_array($result)) {
         if ($this->_provider->canApplyQueryOptions()) {
             $this->_requestDescription->setCountValue(count($result));
         } else {
             $this->_requestDescription->setCountValue($_odata_server_count);
         }
     }
     // Library applies query options only if the IDSQP2::canApplyQueryOptions returns true, IDSQP::canApplyQueryOptions
     // always returns true.
     $applicableForSetQuery = $this->_provider->canApplyQueryOptions() && is_array($result) && !empty($result);
     if ($applicableForSetQuery) {
         //Apply (implicit and explicit) $orderby option
         $internalOrderByInfo = $this->_requestDescription->getInternalOrderByInfo();
         if (!is_null($internalOrderByInfo)) {
             $orderByFunction = $internalOrderByInfo->getSorterFunction()->getReference();
             usort($result, $orderByFunction);
         }
         //Apply $skiptoken option
         $internalSkipTokenInfo = $this->_requestDescription->getInternalSkipTokenInfo();
         if (!is_null($internalSkipTokenInfo)) {
             $matchingIndex = $internalSkipTokenInfo->getIndexOfFirstEntryInTheNextPage($result);
             $result = array_slice($result, $matchingIndex);
         }
         //Apply $top and $skip option
         if (!empty($result)) {
             $top = $this->_requestDescription->getTopCount();
             $skip = $this->_requestDescription->getSkipCount();
             if (!is_null($top) && !is_null($skip)) {
                 $result = array_slice($result, $skip, $top);
             } else {
                 if (is_null($top)) {
                     $result = array_slice($result, $skip);
                 } else {
                     if (is_null($skip)) {
                         $result = array_slice($result, 0, $top);
                     }
                 }
             }
             //$skip and $top affects $count so consider here.
             if ($this->_requestDescription->getRequestCountOption() == RequestCountOption::VALUE_ONLY) {
                 $this->_requestDescription->setCountValue(count($result));
             }
         }
     }
     $segmentDescriptor->setResult($result);
 }