import { NormalType } from './attribute';
import { Spec, SpecType } from './spec';
export declare type ModificationActions = 'RESTRICT' | 'CASCADE' | 'NO ACTION' | 'SET NULL' | 'SET DEFAULT';
export declare type RelationType = 'SUPERCLASS' | 'SUBCLASS' | 'MASTER' | 'DETAIL' | 'RECURSIVE' | 'MANY_TO_MANY' | 'INJECTIVE';
export interface Relation<T extends SpecType> {
    type: RelationType;
    target: {
        scope: string;
        model: string;
    };
    through?: {
        scope: string;
        model: string;
    };
    alias: keyof T['records'] | keyof T['sets'];
    key: string;
    required?: boolean;
    onDelete: ModificationActions;
    onUpdate: ModificationActions;
}
export interface ForeignKey<N extends string> {
    name: N;
    type?: NormalType;
    required?: boolean;
    unique?: boolean;
    primary?: boolean;
    mutable?: boolean;
    elide?: boolean;
}
export interface Inheritor<S extends SpecType, T extends SpecType> {
    target: Spec<T>;
    alias: keyof S['records'];
}
export interface InheritorsOptions<S extends SpecType, T extends SpecType> {
    sharedExistingUniqueField: keyof (S['fields'] | T['fields']);
    aliasOnSubclasses: keyof T['records'];
    typeIdentifierFieldName: keyof S['fields'];
    typeIdentifierRequired?: boolean;
    inheritors: Inheritor<S, T>[];
}
export interface MasterOptions<S extends SpecType, T extends SpecType> {
    target: Spec<T>;
    alias: keyof S['records'];
    ownAliasOnTarget: keyof T['sets'];
    foreignKey: ForeignKey<keyof S['fields']>;
    required?: boolean;
    onDelete?: ModificationActions;
    onUpdate?: ModificationActions;
}
export interface InjectiveOptions<S extends SpecType, T extends SpecType> {
    target: Spec<T>;
    alias: keyof S['records'];
    ownAliasOnTarget: keyof T['records'];
    foreignKey: ForeignKey<keyof S['fields']>;
    required?: boolean;
    onDelete?: ModificationActions;
    onUpdate?: ModificationActions;
}
export interface RecursiveOptions<S extends SpecType> {
    alias: keyof S['records'] | keyof S['sets'];
    key: keyof S['fields'];
    keyType?: NormalType;
    onDelete?: ModificationActions;
    onUpdate?: ModificationActions;
}
export declare function appendRelation<T extends SpecType>(spec: Spec<T>, relation: Relation<T>): void;
export interface RelationsBuilder<S extends SpecType> {
    inheritors<T extends SpecType>(options: InheritorsOptions<S, T>): void;
    injective<T extends SpecType>(options: InjectiveOptions<S, T>): void;
    master<T extends SpecType>(options: MasterOptions<S, T>): void;
    recursive(options: RecursiveOptions<S>): void;
}
export declare function createRelationBuilder<S extends SpecType>(spec: Spec<S>): RelationsBuilder<S>;