import type { MetadataStorage } from '../metadata/MetadataStorage.js';
import type { Dictionary, FilterDef } from '../typings.js';
/** An `rls`-flagged filter definition together with the entity it is declared on. @internal */
export interface RlsFilterEntry {
    filter: FilterDef;
    entityName: string;
}
/**
 * Collects all `rls`-flagged filter definitions with the given name (only entity-scoped filters can be `rls`).
 * The full name -> defs lookup is built once and cached on the shared (immutable) MetadataStorage, so repeated
 * `setFilterParams` calls and forks reuse it instead of walking every entity each time.
 * @internal
 */
export declare function findRlsFilterDefs(metadata: MetadataStorage, name: string): RlsFilterEntry[];
/**
 * Drops the cached `rls` filter lookup — `MikroORM.discoverEntity()` mutates the shared MetadataStorage,
 * so a lookup built before the call would miss the newly discovered filters.
 *
 * @internal
 */
export declare function clearRlsFilterDefsCache(metadata: MetadataStorage): void;
/**
 * Computes the `rls` session variables a set of same-named filter defs stages for the given args, mirroring the
 * policy compilation (`current_setting` names and custom `setting` binding). Shared by staging and `fork({ session })`.
 * @internal
 */
export declare function computeRlsFilterVariables(filters: RlsFilterEntry[], args: Dictionary): Dictionary<string | number | boolean | Date>;
/**
 * Computes which staged session variables a `setFilterParams` call may prune: the variables the OLD args staged for
 * this filter that the new args no longer set, minus any variable another filter's current params still stage
 * (a custom `setting` name can be shared by differently named filters). Recomputing from the old args rather than
 * matching by prefix keeps a filter named `tenant` from also pruning a `tenant.x` filter's `mikro.tenant.x.*` variables.
 * @internal
 */
export declare function computeRemovedRlsVariables(metadata: MetadataStorage, name: string, filters: RlsFilterEntry[], previousArgs: Dictionary, nextVariables: Dictionary, allFilterParams: Dictionary<Dictionary>): string[];