import type { Logger } from '@sap-ux/logger';
import type { BackendServiceRetrievalOptions, Service } from '.';
import type { ServiceOptions } from '../types';
import { BackendSystem, BackendSystemKey } from '../entities/backend-system';
/**
 * Should not be used directly, use factory method `getService` instead.
 * Data integrity cannot be guaranteed when using this class directly.
 */
export declare class SystemService implements Service<BackendSystem, BackendSystemKey> {
    private readonly dataProvider;
    private readonly logger;
    constructor(logger: Logger, options?: ServiceOptions);
    partialUpdate(key: BackendSystemKey, entity: Partial<BackendSystem>): Promise<BackendSystem | undefined>;
    private mergeProperties;
    private readOrThrow;
    private validatePartialUpdateInput;
    read(key: BackendSystemKey): Promise<BackendSystem | undefined>;
    /**
     * Write the backend system to the store. If a backend entity with the same key already exists and error is thrown.
     * Use the `force` option to overwrite, use with cautions and are sure other clients will not break.
     *
     * @param entity the backend system to write
     * @param options
     * @param options.force Force overwrite existing backend system with the same key
     * @returns
     */
    write(entity: BackendSystem, options?: {
        force: boolean;
    }): Promise<BackendSystem | undefined>;
    delete(entity: BackendSystem): Promise<boolean>;
    /**
     * Retrieves all backend systems from the store. Can be filtered by providing retrieval options.
     * N.B. if no `connectionType` is provided in the options, only systems with `abap_catalog` connection type will be returned.
     *
     * @param options - backend service retrieval options
     * @returns - list of backend systems
     */
    getAll(options?: BackendServiceRetrievalOptions): Promise<BackendSystem[] | []>;
}
export declare function getInstance(logger: Logger, options?: ServiceOptions): SystemService;
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