FeatureSet

AMD: require(["esri/rest/support/FeatureSet"], (FeatureSet) => { /* code goes here */ });
ESM: import FeatureSet from "@arcgis/core/rest/support/FeatureSet";
Class: esri/rest/support/FeatureSet
Inheritance: FeatureSet Accessor
Since: ArcGIS API for JavaScript 4.20

A collection of features returned from ArcGIS Server or used as input to methods. Each feature in the FeatureSet may contain geometry, attributes, and symbology. If the FeatureSet does not contain geometry, and only contains attributes, the FeatureSet can be treated as a table where each feature is a row object. Methods that return FeatureSet include query.

See also

Constructors

new FeatureSet(properties)
Parameter
properties Object
optional

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

Property Overview

Any properties can be set, retrieved or listened to. See the Working with Properties topic.
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Name Type Summary Class
String

The name of the class.

more details
Accessor
String

The name of the layer's primary display field.

more details
FeatureSet
Boolean

Typically, a layer has a limit on the number of features (i.e., records) returned by the query operation.

more details
FeatureSet
Graphic[]

The array of graphics returned from a task.

more details
FeatureSet
Field[]

Information about each field.

more details
FeatureSet
String

The geometry type of features in the FeatureSet.

more details
FeatureSet
Geometry

The geometry used to query the features.

more details
FeatureSet
SpatialReference

When a FeatureSet is used as input to Geoprocessor, the spatial reference is set to the map's spatial reference by default.

more details
FeatureSet

Property Details

declaredClass Stringreadonly inherited

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

displayFieldName String

The name of the layer's primary display field. The value of this property matches the name of one of the fields of the feature. This is only applicable when the FeatureSet is returned from a task. It is ignored when the FeatureSet is used as input to a geoprocessing task.

exceededTransferLimit Boolean

Typically, a layer has a limit on the number of features (i.e., records) returned by the query operation. If maxRecordCount is configured for a layer, exceededTransferLimit will be true if a query matches more than the maxRecordCount features. It will be false otherwise. Supported by ArcGIS Server version 10.1 and later.

Autocasts from Object[]

The array of graphics returned from a task.

Autocasts from Object[]

Information about each field.

geometryType String

The geometry type of features in the FeatureSet. All features's geometry must be of the same type.

Possible Values:"point"|"multipoint"|"polyline"|"polygon"|"extent"|"mesh"

queryGeometry Geometry

The geometry used to query the features. It is useful for getting the buffer geometry generated when querying features by distance or getting the query geometry projected in the outSpatialReference of the query. The query geometry is returned only for client-side queries and hosted feature services. The query's returnQueryGeometry must be set to true and the layer's capabilities.query.supportsQueryGeometry has to be true for the query to return query geometry.

See also
spatialReference SpatialReference

When a FeatureSet is used as input to Geoprocessor, the spatial reference is set to the map's spatial reference by default. This value can be changed. When a FeatureSet is returned from a task, the value is the result as returned from the server.

Method Overview

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Name Return Type Summary Class

Adds one or more handles which are to be tied to the lifecycle of the object.

more details
Accessor
*

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product.

more details
FeatureSet
Boolean

Returns true if a named group of handles exist.

more details
Accessor

Removes a group of handles owned by the object.

more details
Accessor
Object

Converts an instance of this class to its ArcGIS portal JSON representation.

more details
FeatureSet

Method Details

addHandles(handleOrHandles, groupKey)inherited
Since: ArcGIS API for JavaScript 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 }
);

// Handle gets removed when the object is destroyed.
this.addHandles(handle);
Parameters
handleOrHandles WatchHandle|WatchHandle[]

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.

fromJSON(json){*}static

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.

Parameter
json Object

A JSON representation of the instance in the ArcGIS format. See the ArcGIS REST API documentation for examples of the structure of various input JSON objects.

Returns
Type Description
* Returns a new instance of this class.
hasHandles(groupKey){Boolean}inherited
Since: ArcGIS API for JavaScript 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(groupKey)inherited
Since: ArcGIS API for JavaScript 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");
toJSON(){Object}

Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() guide topic for more information.

Returns
Type Description
Object The ArcGIS portal JSON representation of an instance of this class.

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