/**
 * This Source Code is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * Copyright (c) Infonomic Company Limited
 */
/**
 * Adapter-agnostic mapping between collection field types and the EAV store
 * tables they read from and write to. Both @byline/db-postgres (for UNION ALL
 * generation and filter SQL) and @byline/client (for translating client-API
 * where clauses into FieldFilter descriptors) consume this module — keeping
 * the mapping in a single place prevents the two sides from drifting.
 *
 * Column names (`value`, `value_integer`, `value_timestamp_tz`, …) are shared
 * between the adapter schema and the filter builder by design: the EAV store
 * tables are the product's public storage contract, not a Postgres-only
 * implementation detail. A future MySQL adapter is expected to mirror the
 * same column names.
 */
/** The seven EAV store table types. */
export type StoreType = 'text' | 'numeric' | 'boolean' | 'datetime' | 'json' | 'relation' | 'file';
/**
 * Canonical order of store types — used by adapters when assembling the
 * UNION ALL that reconstructs a document from its per-type rows.
 */
export declare const ALL_STORE_TYPES: readonly StoreType[];
/** Resolved store location for a single-value field type. */
export interface FieldStoreMapping {
    /** The EAV store table that holds the field's data. */
    storeType: StoreType;
    /**
     * The column within the store table that holds the scalar value.
     * Used for filter WHERE conditions and sort expressions.
     */
    valueColumn: string;
}
/**
 * Field type → EAV store table + value column.
 *
 * Structure fields (`group`, `array`, `blocks`) and the `meta` category do
 * not appear here — they are handled separately via `fieldTypeToStoreType`.
 */
export declare const fieldTypeToStore: Readonly<Record<string, FieldStoreMapping | undefined>>;
/**
 * Extends StoreType with `'meta'` for structure field types that produce
 * identity rows in `store_meta` (array, blocks). Also accepts `undefined`
 * for structure types that only group children without their own storage.
 */
export type FieldStoreKind = StoreType | 'meta';
/**
 * Field type → store kind, including `'meta'` for structure types that
 * produce identity rows and `undefined` for the pure-nesting `group` type.
 *
 * Used by adapters to resolve which store tables to UNION ALL for a given
 * subset of requested fields (selective field loading).
 */
export declare const fieldTypeToStoreType: Readonly<Record<string, FieldStoreKind | undefined>>;