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<?php
namespace Bitrix\Main\Access\Filter;
use Bitrix\Main\Access\AccessibleController;
/**
* Filter for getting items according to user rights.
*/
interface AccessFilter
{
/**
* @param AccessibleController $controller
*/
public function __construct(AccessibleController $controller);
/**
* Filter for getting elements.
*
* One instance of access filter can handle multiple entities (recommended to use 1 filter for entities that
* are similar in meaning and purpose). To get a filter for a specific entity, you need to pass the `entity` parameter.
*
* If the user has full access, then you can return an empty array (i.e. there is no filtering).
* If the user does not have access at all, then you can return a deliberately false filter that will
* not return records (for example, `ID IS NULL').
*
* @param string $entity
* @param array $params
*
* @return array
*
* @throws UnknownEntityException if they are trying to get a filter for an unknown entity.
*/
public function getFilter(string $entity, array $params = []): array;
}