import { DBInterface } from "./dbInterface";
import { FindexMasterKey } from "./master_keys";
/**
 * Findex class implementing callbacks using DbInterface and upsert and search functions
 *
 * @param db DB Interface, implementing the minimal DB requests for Findex algorithm
 */
export declare class Findex {
    private readonly _db;
    get db(): DBInterface;
    constructor(db: DBInterface);
    /**
     * This function is responsible of the Findex-indexes creation
     *
     * @param {FindexMasterKey} masterKeys containing K and K*
     * @param {Uint8Array} label used to create all indexes and to refresh them later on
     * @param locationAndWords correspondence between locations in database and words
     * @returns {void} does not return anything if everything went well
     */
    upsert(masterKeys: FindexMasterKey, label: Uint8Array, locationAndWords: {
        [key: string]: string[];
    }): Promise<void>;
    /**
     * This function is the same as `upsert` but it will create letter-graphs for
     * words of more than 3 letters. For example, for "robert" :
     *
     * "rob" -> "robe" -> "rober" -> "robert"
     *
     * Searching for "rob" with a `graphRecursionLimit` greater or equal to
     * 3 will lead to the results associated to "robert".
     *
     * @param {FindexMasterKey} masterKeys containing K and K*
     * @param {Uint8Array} label used to create all indexes and to refresh them later on
     * @param locationAndWords correspondence between locations in database and words
     * @returns {void} does not return anything if everything went well
     */
    graph_upsert(masterKeys: FindexMasterKey, label: Uint8Array, locationAndWords: {
        [key: string]: string[];
    }): Promise<void>;
    /**
     *
     * This function is used to search indexed words among Entry Table and Chain Table indexes
     *
     * @param {FindexMasterKey} masterKeys containing K and K*
     * @param key_search
     * @param {Uint8Array} label used to create all indexes and to refresh them later on
     * @param {string[]} words a list of words
     * @param {number} loopIterationLimit this number helps to limit the number of results in a search query when unchaining Index Table Entry item
     * @param graphRecursionLimit
     * @param progress
     * @returns {Uint8Array[]} a list of Indexed Values
     */
    search(key_search: Uint8Array, label: Uint8Array, words: string[], loopIterationLimit: number, graphRecursionLimit: number, progress: Function): Promise<Uint8Array[]>;
}
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