export interface DeleteDatabaseOptions {
    table: string;
    where: string;
}
export interface UpdateDatabaseOptions {
    table: string;
    where: string;
    set: string[];
}
export interface InsertDatabaseOptions {
    table: string;
    columns: string[];
    values: string[];
}
export interface SelectDatabaseOptions {
    /** select statement, in ABAP SQL syntax */
    select: string;
    /** list of primary key fields, in lower case, if known */
    primaryKey?: string[];
}
export interface SelectRuntimeOptions {
    appending?: boolean;
}
export type DatabaseValue = number | string | Uint8Array | null;
export type DatabaseRow = {
    [name: string]: DatabaseValue;
};
export type DatabaseRows = DatabaseRow[];
export interface SelectDatabaseResult {
    rows: DatabaseRows;
}
export type DatabaseCursorCallbacks = {
    fetchNextCursor: (packageSize: number) => Promise<SelectDatabaseResult>;
    closeCursor: () => Promise<void>;
};
export interface DatabaseClient {
    /*** the type/name/identifier of the database */
    name: string;
    connect(): Promise<void>;
    disconnect(): Promise<void>;
    /*** execute any native SQL command */
    execute(sql: string | string[]): Promise<void>;
    beginTransaction(): Promise<void>;
    commit(): Promise<void>;
    rollback(): Promise<void>;
    delete(options: DeleteDatabaseOptions): Promise<{
        subrc: number;
        dbcnt: number;
    }>;
    update(options: UpdateDatabaseOptions): Promise<{
        subrc: number;
        dbcnt: number;
    }>;
    insert(options: InsertDatabaseOptions): Promise<{
        subrc: number;
        dbcnt: number;
    }>;
    select(options: SelectDatabaseOptions): Promise<SelectDatabaseResult>;
    openCursor(options: SelectDatabaseOptions): Promise<DatabaseCursorCallbacks>;
}