import { DataSource, EntityManager, FindManyOptions, ObjectLiteral, Repository } from 'typeorm';
import { types } from "../../../ledger-sdk/src";
type ObjectLiteralWithHandle = ObjectLiteral & {
    handle: types.LedgerHandle;
};
export declare class BaseService<T extends ObjectLiteralWithHandle> {
    protected readonly EntityClass: new () => T;
    repository: Repository<T>;
    constructor(EntityClass: new () => T, dataSource: DataSource);
    create(entity: T, entityManager?: EntityManager): Promise<void>;
    exists(handle: types.LedgerHandle, entityManager?: EntityManager): Promise<boolean>;
    findOne(handle: types.LedgerHandle, entityManager?: EntityManager): Promise<T>;
    findWhere(where: FindManyOptions<T>, entityManager?: EntityManager): Promise<T[]>;
    queryBuilder(entityManager?: EntityManager): Promise<import("typeorm").SelectQueryBuilder<any>>;
}
export {};