NetworkElement | API Reference | ArcGIS Maps SDK for JavaScript 4.31

The network element is a representation of how the network topology defines its graph. The network topology (or index) work with network elements and thats how the trace traverses those elements. This class contains basic properties as seen in the network topology. For performance reasons, many utility network functions return network elements and not "full" features. One feature can have many network elements.

An example is a tri-state transformer with 3 terminals with High side (H) and two Low sides (X1, X2). The feature globalId could be g but it is composed of three network elements, g-H, g-X1 and g-X2.

     H

   /   \

X1       X2

It is worth mentioning that elements in the network topology also have an elementId which is purely internal to the network and not exposed externally. Those elementIds are then converted to matching objectId/globalId`.

See also

trace

Constructors

NetworkElement Constructor new NetworkElement(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 Watch for changes topic.

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Type	Summary	Class
Number	The asset group code that this network element represents.	NetworkElement
Number	The asset type code discriminator this network element represents.	NetworkElement
String	The name of the class.	Accessor
String	The globalId of the feature the network element belongs to.	NetworkElement
Number	The network source Id of the feature the network element belongs to.	NetworkElement
Number	The objectId of the feature the network element belongs to.	NetworkElement
Number	Applicable to edge elements, represents a double value (0 to 1) where this edge element starts.	NetworkElement
Number	Applicable to edge elements, represents a double value (0 to 1) where this edge element ends.	NetworkElement
Number	The terminal id defined at the network element.	NetworkElement

Property Details

assetGroupCode Property assetGroupCode Number

The asset group code that this network element represents.

assetTypeCode Property assetTypeCode Number

The asset type code discriminator this network element represents.

declaredClass Inherited Property declaredClass Stringreadonly Inherited from Accessor

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

globalId Property globalId String

The globalId of the feature the network element belongs to.

networkSourceId Property networkSourceId Number

The network source Id of the feature the network element belongs to. Note that this is different from layerId and you need to use getLayerIdBySourceId() to get the layerId.

objectId Property objectId Number

The objectId of the feature the network element belongs to.

positionFrom Property positionFrom Number

Applicable to edge elements, represents a double value (0 to 1) where this edge element starts.

Example

Line feature with objectId 100 with 2 midspan junctions (j1,j2). The line feature has 3 edge network elements
F-j1, j1-j2 and j2-T.

                                       OID=100
                               F------j1------j2------T

F-j1  (objectId=100, positionFrom=0, positionTo=0.33)
j1-j2 (objectId=100, positionFrom=0.33, positionTo=0.66)
j2-T  (objectId=100, positionFrom=0.66, positionTo=1)

positionTo Property positionTo Number

Applicable to edge elements, represents a double value (0 to 1) where this edge element ends.

Example

Line feature with objectId 100 with 2 midspan junctions (j1,j2). The line feature has 3 edge network elements
F-j1, j1-j2 and j2-T.

                                       OID=100
                               F------j1------j2------T

F-j1  (objectId=100, positionFrom=0, positionTo=0.33)
j1-j2 (objectId=100, positionFrom=0.33, positionTo=0.66)
j2-T  (objectId=100, positionFrom=0.66, positionTo=1)

terminalId Property terminalId Number

The terminal id defined at the network element.

See also

Terminal

Method Overview

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Return Type	Summary	Class
	Adds one or more handles which are to be tied to the lifecycle of the object.	Accessor
*	Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product.	NetworkElement
Boolean	Returns true if a named group of handles exist.	Accessor
	Removes a group of handles owned by the object.	Accessor
Object	Converts an instance of this class to its ArcGIS portal JSON representation.	NetworkElement

Method Details

addHandles Inherited Method addHandles(handleOrHandles, groupKey) Inherited from Accessor 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

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 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 Inherited Method hasHandles(groupKey){Boolean} Inherited from Accessor 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) Inherited from Accessor 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");

toJSON Method 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.