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Showing content from https://developers.arcgis.com/javascript/latest/api-reference/esri-rest-support-DataLayer.html below:

DataLayer | API Reference | ArcGIS Maps SDK for JavaScript 4.33

ESM: import DataLayer from "@arcgis/core/rest/support/DataLayer.js";

CDN: const DataLayer = await $arcgis.import("@arcgis/core/rest/support/DataLayer.js");

Class: @arcgis/core/rest/support/DataLayer

Since: ArcGIS Maps SDK for JavaScript 4.20

Input for properties of ClosestFacilityParameters, RouteParameters or ServiceAreaParameters. The DataLayer can be used to define the following for each parameter type:

• ClosestFacilityParameters: define facilities, incidents and barriers.
• RouteParameters: define barriers and stops.
• ServiceAreaParameters: define facilities and barriers.

DataLayer Constructor new DataLayer(properties)

Parameter

optional

See the properties for a list of all the properties that may be passed into the constructor.

Show inherited properties Hide inherited properties

declaredClass

Inherited

Property declaredClass Stringreadonly

The name of the class. The declared class name is formatted as esri.folder.className.

Since: ArcGIS Maps SDK for JavaScript 4.21 DataLayer since 4.20, doNotLocateOnRestrictedElements added at 4.21.

If true, restricted network elements should be considered when finding network locations.

The geometry to apply to the spatial filter. The spatial relationship as specified by spatialRelationship is applied to this geometry while performing the query.

Example

let stops = new DataLayer();
stops.geometry = view.extent;

Since: ArcGIS Maps SDK for JavaScript 4.24 DataLayer since 4.20, geometryType added at 4.24.

The type of geometry specified by the geometry property.

Possible Values:"point" |"polyline" |"polygon" |"envelope" |"multipoint"

The name of the data layer in the map service that is being referenced.

Example

let stops = new DataLayer();
stops.name = "Hospitals";

The spatial relationship to be applied on the input geometry while performing the query.

Possible Value Description intersects Part of a feature from feature class 1 is contained in a feature from feature class 2. contains Part or all of a feature from feature class 1 is contained within a feature from feature class 2. crosses The feature from feature class 1 crosses a feature from feature class 2. envelope-intersects The envelope of feature class 1 intersects with the envelope of feature class 2. index-intersects The envelope of the query feature class intersects the index entry for the target feature class. overlaps Features from feature class 1 overlap features in feature class 2. touches The feature from feature class 1 touches the border of a feature from feature class 2. within The feature from feature class 1 is completely enclosed by the feature from feature class 2. relation Allows specification of any relationship defined using the Shape Comparison Language.

Possible Values:"intersects" |"contains" |"crosses" |"envelope-intersects" |"index-intersects" |"overlaps" |"touches" |"within" |"relation"

Example

let stops = new DataLayer();
stops.spatialRelationship = "contains";

A where clause for the query. Any legal SQL where clause operating on the fields in the layer is allowed.

Example

let stops = new DataLayer();
stops.where = "POP2000 > 350000";

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addHandles

Inherited

Method addHandles(handleOrHandles, groupKey)

Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, addHandles added at 4.25.

Adds one or more handles which are to be tied to the lifecycle of the object. The handles will be removed when the object is destroyed.

// Manually manage handles
const handle = reactiveUtils.when(
  () => !view.updating,
  () => {
    wkidSelect.disabled = false;
  },
  { once: true }
);

this.addHandles(handle);

// Destroy the object
this.destroy();

Parameters

Handles marked for removal once the object is destroyed.

groupKey *

optional

Key identifying the group to which the handles should be added. All the handles in the group can later be removed with Accessor.removeHandles(). If no key is provided the handles are added to a default group.

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product. The object passed into the input json parameter often comes from a response to a query operation in the REST API or a toJSON() method from another ArcGIS product. See the Using fromJSON() topic in the Guide for details and examples of when and how to use this function.

Returns

Type Description * | null | undefined Returns a new instance of this class.

hasHandles

Inherited

Method hasHandles(groupKey){Boolean}

Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, hasHandles added at 4.25.

Returns true if a named group of handles exist.

Parameter

groupKey *

optional

A group key.

Returns

Type Description Boolean Returns true if a named group of handles exist.

Example

// Remove a named group of handles if they exist.
if (obj.hasHandles("watch-view-updates")) {
  obj.removeHandles("watch-view-updates");
}

removeHandles

Inherited

Method removeHandles(groupKey)

Since: ArcGIS Maps SDK for JavaScript 4.25 Accessor since 4.0, removeHandles added at 4.25.

Removes a group of handles owned by the object.

Parameter

groupKey *

optional

A group key or an array or collection of group keys to remove.

Example

obj.removeHandles(); // removes handles from default group

obj.removeHandles("handle-group");
obj.removeHandles("other-handle-group");

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