TraceLocation

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

To perform the trace analytic, users can optionally supply a list of locations in forms of globalIds (UUID) and terminals. These locations indicate where should the trace start (also known as starting points) and where should it end (barriers) Starting locations can be applied to all network sources.

See also

Constructors

new TraceLocation(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.
Show inherited properties Hide inherited properties
Name Type Summary Class
String

The name of the class.

more details
Accessor
String

The globalId (UUID) of the feature to start or stop the trace.

more details
TraceLocation
Boolean

This indicates whether this barrier starting location should be skipped (filtered) when a trace attempts to find upstream controllers.

more details
TraceLocation
Number

This double parameter of value of 0-1 indicates a percentage along the line of where the trace location is placed.

more details
TraceLocation
Number

The terminal Id to place the starting location at.

more details
TraceLocation
String

The type of the trace location; starting-point defines where the trace should start and barrier defines where the trace should stop.

more details
TraceLocation

Property Details

declaredClass Stringreadonly inherited

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

globalId String

The globalId (UUID) of the feature to start or stop the trace.

isFilterBarrier Boolean

This indicates whether this barrier starting location should be skipped (filtered) when a trace attempts to find upstream controllers. Setting this to false will stop the trace if it encounters this barrier. When to set to true, the trace will momenterily skip the barrier to find any upstream controllers and will filter out the output accordingly. Applicable subnetwork-based trace types only.

Default Value:false
percentAlong Number

This double parameter of value of 0-1 indicates a percentage along the line of where the trace location is placed. Applicable to line features only.

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)

When percentAlong is 0.5 (50%) the starting location will be placed on the middle edge (j1-j2)

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

When percentAlong is 0.1 (10%) the starting location will be placed on the first edge (F-j1)

                                       OID=100
                               F-x----j1------j2------T
terminalId Number

The terminal Id to place the starting location at. Applicable for junction/device sources only. Users can use getTerminalConfiguration() in UtilityNetwork to get the terminal.

See also
type String

The type of the trace location; starting-point defines where the trace should start and barrier defines where the trace should stop.

Possible Values:"starting-point"|"barrier"

Method Overview

Show inherited methods Hide inherited methods
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
TraceLocation
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
TraceLocation

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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