/**
 * Interface definition for pure CRUD operations.
 * @see https://en.wikipedia.org/wiki/Create,_read,_update_and_delete
 */
export interface CRUDEngineBase {
    /**
     * Creates a record by its primary key within a table.
     * @param tableName Table name
     * @param primaryKey Primary key to be used to store the record
     * @param entity Any kind of object that should be stored
     * @returns Resolves with the primary key of the stored record.
     */
    create<EntityType = Object, PrimaryKey = string>(tableName: string, primaryKey: PrimaryKey, entity: EntityType): Promise<PrimaryKey>;
    /**
     * Finds a record by its primary key within a table.
     * @param tableName Table name
     * @param primaryKey Primary key to query the record
     * @throws {RecordNotFoundError} Will be thrown, if the record could not be found.
     * @returns Resolves with the record.
     */
    read<EntityType = Object, PrimaryKey = string>(tableName: string, primaryKey: PrimaryKey): Promise<EntityType>;
    /**
     * Updates a record with a set of properties.
     * @param tableName Table name
     * @param primaryKey Primary key of record which should get updated
     * @param changes Updated properties that should be saved for the record
     * @returns Resolves with the primary key of the updated record.
     */
    update<PrimaryKey = string, ChangesType = Object>(tableName: string, primaryKey: PrimaryKey, changes: ChangesType): Promise<PrimaryKey>;
    /**
     * Deletes a record by its primary key within a table.
     * @param tableName Table name
     * @param primaryKey Primary key to be used to delete the record
     * @returns Resolves with the primary key of the deleted record.
     */
    delete<PrimaryKey = string>(tableName: string, primaryKey: PrimaryKey): Promise<PrimaryKey>;
}
/**
 * Interface definition for CRUD operations with support for collections.
 */
export interface CRUDEngineBaseCollection extends CRUDEngineBase {
    /**
     * Reads all records from a table.
     */
    readAll<EntityType>(tableName: string): Promise<EntityType[]>;
    /**
     * Returns all primary keys of records that are stored in a table.
     */
    readAllPrimaryKeys(tableName: string): Promise<string[]>;
    /**
     * Deletes all records within a table.
     * @param tableName Table name
     * @returns Resolves with `true`, if all records have been removed.
     */
    deleteAll(tableName: string): Promise<boolean>;
}
/**
 * Extends collection-aware CRUD operations with convenience methods for practical usage in web applications (such as "Wire for Web").
 */
export interface CRUDEngine extends CRUDEngineBaseCollection {
    [index: string]: any;
    /**
     * Clears all tables without deleting them.
     * @returns Resolves when all tables are cleared.
     */
    clearTables(): Promise<void>;
    /**
     * Initializes the store engine. This needs to be done prior to operating with it.
     * @param storeName Name of the store
     * @param settings Database-specific settings
     * @returns Resolves with the underlying (unwrapped) instance of a database.
     * @throws {UnsupportedError} Error when feature is not available on targeted platform.
     */
    init(storeName: string, ...settings: any[]): Promise<any>;
    /**
     * Checks wether the engine is supported in the current environment.
     * @returns Resolves if supported, rejects if unsupported.
     */
    isSupported(): Promise<void>;
    /**
     * Deletes the store.
     * @returns Resolves if store got deleted.
     */
    purge(): Promise<void>;
    storeName: string;
    /**
     * Updates a record with a set of properties.
     * If the record doesn't exist, The record will be created automatically.
     * @param tableName Table name
     * @param primaryKey Primary key of record which should get updated
     * @param changes Updated properties that should be saved for the record
     * @returns Resolves with the primary key of the updated record.
     */
    updateOrCreate<PrimaryKey = string, ChangesType = Object>(tableName: string, primaryKey: PrimaryKey, changes: ChangesType): Promise<PrimaryKey>;
}
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