FeatureType

AMD: require(["esri/layers/support/FeatureType"], (FeatureType) => { /* code goes here */ });
ESM: import FeatureType from "@arcgis/core/layers/support/FeatureType";
Class: esri/layers/support/FeatureType
Inheritance: FeatureType Accessor
Since: ArcGIS API for JavaScript 4.4

FeatureType is a subset of features defined in a FeatureLayer that share the same attributes. They are used as a way to categorize your data. For example, the streets in a city streets feature layer could be categorized into three feature types: local streets, collector streets, and arterial streets.

Constructors

new FeatureType(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
HashMap<(CodedValueDomain|RangeDomain|InheritedDomain)>

Domains associated with the feature type.

more details
FeatureType
Number|String

The feature type identifier.

more details
FeatureType
String

The feature type name.

more details
FeatureType
FeatureTemplate[]

Array of feature templates associated with the feature type.

more details
FeatureType

Property Details

declaredClass Stringreadonly inherited
Since: ArcGIS API for JavaScript 4.7

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

Domains associated with the feature type. It is an object where the name of each property corresponds with the name of a field containing a domain. If a field's domain is an instance of InheritedDomain, the application will use the domain defined for the field from the layer. If the domain is an instance of CodedValueDomain or RangeDomain then the domain is defined specifically for the given feature type.

The feature type identifier.

name String

The feature type name.

templates FeatureTemplate[]

Array of feature templates associated with the feature type.

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
this

Creates a deep clone of this object.

more details
FeatureType
*

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

more details
FeatureType
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
FeatureType

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.

clone(){this}

Creates a deep clone of this object. Any properties that store values by reference will be assigned copies of the referenced values on the cloned instance.

Returns
Type Description
this A deep clone of the class instance that invoked this method.
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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