/**
 * Copyright (c) 2020-present, Goldman Sachs
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import type { Class } from '../packageableElements/domain/Class.js';
import type { PropertyReference } from '../packageableElements/domain/PropertyReference.js';
import type { PackageableElementReference } from '../packageableElements/PackageableElementReference.js';
import type { ValueSpecification, ValueSpecificationVisitor } from './ValueSpecification.js';
import { InstanceValue } from './InstanceValue.js';
import { type Hashable } from '@finos/legend-shared';
export declare abstract class GraphFetchTree implements Hashable {
    subTrees: GraphFetchTree[];
    subTypeTrees: SubTypeGraphFetchTree[];
    abstract get hashCode(): string;
    get isEmpty(): boolean;
}
export declare class RootGraphFetchTree extends GraphFetchTree implements Hashable {
    class: PackageableElementReference<Class>;
    get hashCode(): string;
    constructor(_class: PackageableElementReference<Class>);
}
export declare class PropertyGraphFetchTree extends GraphFetchTree implements Hashable {
    property: PropertyReference;
    alias?: string | undefined;
    parameters: ValueSpecification[];
    subType?: PackageableElementReference<Class> | undefined;
    constructor(property: PropertyReference, subType: PackageableElementReference<Class> | undefined);
    get hashCode(): string;
}
export declare class SubTypeGraphFetchTree extends GraphFetchTree implements Hashable {
    subTypeClass: PackageableElementReference<Class>;
    constructor(subTypeClass: PackageableElementReference<Class>);
    get hashCode(): string;
}
export declare class GraphFetchTreeInstanceValue extends InstanceValue implements Hashable {
    values: RootGraphFetchTree[];
    constructor();
    get hashCode(): string;
    accept_ValueSpecificationVisitor<T>(visitor: ValueSpecificationVisitor<T>): T;
}
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