import { Catalog, Column, IDbInfoConfig, Schema, Table } from './types';
export declare class DbInfoService implements IDbInfoConfig {
    private readonly type;
    private readonly apiBasePath;
    private readonly cache;
    constructor(type: string, apiBasePath: string);
    preFetch: (type?: string) => Promise<void>;
    getCatalogs: (type?: string) => Promise<Catalog[]>;
    getSchemasByCatalog: (catalog: string, type?: string) => Promise<Schema[]>;
    getTablesBySchema: (catalog: string, schema: string, type?: string) => Promise<Table[]>;
    getColumnsByTable: (catalog: string, schema: string, table: string, type?: string) => Promise<Column[]>;
    search: (prefix: string, type?: string) => Promise<Catalog[]>;
    private readonly addCacheTypeEntry;
}