/**
 * Copyright 2024 Google LLC. All Rights Reserved.
 *
 * 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 { Filter } from '../filter';
import { FieldFilterInternal } from './field-filter-internal';
export declare abstract class FilterInternal {
    /** Returns a list of all field filters that are contained within this filter */
    abstract getFlattenedFilters(): FieldFilterInternal[];
    /** Returns a list of all filters that are contained within this filter */
    abstract getFilters(): FilterInternal[];
    /** Returns the proto representation of this filter */
    abstract toProto(): Filter;
    abstract isEqual(other: FilterInternal): boolean;
}