import { GraphQLEnumType } from 'graphql';
import { Field, ObjectType } from '../model';
import { OrderClause, OrderDirection, QueryNode } from '../query-tree';
export declare class OrderByEnumType {
    readonly objectType: ObjectType;
    readonly values: ReadonlyArray<OrderByEnumValue>;
    constructor(objectType: ObjectType, values: ReadonlyArray<OrderByEnumValue>);
    get name(): string;
    private get valueMap();
    getValue(name: string): OrderByEnumValue | undefined;
    getValueOrThrow(name: string): OrderByEnumValue;
    getEnumType(): GraphQLEnumType;
}
export declare class OrderByEnumValue {
    readonly path: ReadonlyArray<Field>;
    readonly direction: OrderDirection;
    readonly rootEntityDepth?: number | undefined;
    constructor(path: ReadonlyArray<Field>, direction: OrderDirection, rootEntityDepth?: number | undefined);
    get underscoreSeparatedPath(): string;
    get name(): string;
    get lastSegment(): Field;
    get deprecationReason(): string | undefined;
    getValueNode(itemNode: QueryNode): QueryNode;
    getClause(itemNode: QueryNode): OrderClause;
}
export interface OrderByEnumGeneratorConfig {
    readonly maxRootEntityDepth?: number;
}
export declare class OrderByEnumGenerator {
    private readonly config;
    constructor(config?: OrderByEnumGeneratorConfig);
    /**
     * Generate the OrderBy type for an object type, or undefined if has not any fields to order by
     */
    generate(objectType: ObjectType): OrderByEnumType | undefined;
    private getValues;
    private getValuesForField;
}