import { FormatContext, FormatDataType } from './format-context';
import { ValueType } from '../sql/operands/value-type';
export declare abstract class SimpleFormatContext implements FormatContext {
    protected paramKey: string;
    protected escapeKey: string;
    protected values: ValueType[];
    constructor(paramKey: string, escapeKey: string);
    appendValue(value: ValueType): string;
    restoreValue(type: FormatDataType, value: any): any;
    getValues(): ValueType[];
    escape(value: string): string;
    abstract getDataType(type: FormatDataType): string;
}