import type { IActivityHandler, IActivityContext } from "../../IActivityHandler";
/** Defines inputs for the Relation task. This task requires a geometry service. The input arrays are assumed to be in the same spatial reference, and the relations are evaluate in 2D. Z-coordinates are not used. Geometry types cannot be mixed within an array. */
export interface RelationServiceTaskInputs {
    url: string;
    geometry1: __esri.GeometryUnion | __esri.GeometryUnion[];
    geometry2: __esri.GeometryUnion | __esri.GeometryUnion[];
    relation?: "cross" | "disjoint" | "in" | "interior-intersection" | "intersection" | "line-coincidence" | "line-touch" | "overlap" | "point-touch" | "touch" | "within" | string;
}
/** Defines the paired index object returned by the service task. */
export interface GeometryArrayIndexPair {
    geometry1Index: number;
    geometry2Index: number;
}
/** Defines outputs for the Relation task. */
export interface RelationServiceTaskOutputs {
    /** @description The array of geometries that meet the specified relation. */
    incident?: __esri.Geometry[];
    /** @description The array of geometries that meet the specified relation. */
    incidents?: __esri.Geometry[][];
}
export declare class RelationServiceTask implements IActivityHandler {
    static readonly action = "gcx:wf:arcgis::RelationServiceTask";
    static readonly suite = "gcx:wf:builtin";
    execute(inputs: RelationServiceTaskInputs, context: IActivityContext): Promise<RelationServiceTaskOutputs>;
}