gordonbanderson / silverstripe-elastica

				$inSiteTree = self::$site_tree_classes[$classname];

			} else {

				$class = new \ReflectionClass($classname);

				while ($class = $class->getParentClass()) {

				    $parentClass = $class->getName();

				    if ($parentClass == 'SiteTree') {

				    	$inSiteTree = true;

				    	break;

				    }

				}

				self::$site_tree_classes[$classname] = $inSiteTree;

			}

		if (!$inSiteTree) {

			$class = new \ReflectionClass($this->owner->ClassName);

			while ($class = $class->getParentClass()) {

				$parentClass = $class->getName();

				if ($parentClass == 'SiteTree') {

					$inSiteTree = true;

					break;

				}

			}

		}

		return $inSiteTree;