/**
 * Unlike a source, which is a refinement of a namespace, a query
 * is creating a new unrelated namespace. The query starts with a
 * source, which it might modify. This set of fields used to resolve
 * expressions in the query is called the "input space". There is a
 * specialized QuerySpace for each type of query operation.
 */
import type { AccessModifierLabel, SourceDef } from '../../../model';
import type { AtomicFieldDeclaration } from '../query-items/field-declaration';
import { Join } from '../source-properties/join';
import type { QueryFieldSpace } from '../types/field-space';
import type { QueryOperationSpace } from './query-spaces';
import { RefinedSpace } from './refined-space';
export declare class QueryInputSpace extends RefinedSpace implements QueryFieldSpace {
    private queryOutput;
    readonly _accessProtectionLevel: AccessModifierLabel;
    extendList: string[];
    /**
     * Because of circularity concerns this constructor is not typed
     * properly ...
     * @param input The source which might be extended
     * @param queryOutput MUST BE A QuerySpace
     */
    constructor(input: SourceDef, queryOutput: QueryOperationSpace, _accessProtectionLevel: AccessModifierLabel);
    extendSource(extendField: Join | AtomicFieldDeclaration): void;
    isQueryFieldSpace(): this is QueryFieldSpace;
    outputSpace(): QueryOperationSpace;
    inputSpace(): this;
    accessProtectionLevel(): AccessModifierLabel;
    isQueryOutputSpace(): boolean;
}