UtilityNetworkTraceViewModel | API Reference | ArcGIS Maps SDK for JavaScript 4.30

Provides the logic for the UtilityNetworkTrace widget.

See also

Constructors

UtilityNetworkTraceViewModel Constructor new UtilityNetworkTraceViewModel(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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Type	Summary	Class
String	The name of the class.	Accessor
GraphicColor	The default color to assign the aggregated geometry of a trace result.	UtilityNetworkTraceViewModel
Boolean	When true, provides the ability to show the convex hull or buffer.	UtilityNetworkTraceViewModel
FlagProperty []	An array of map points to load into the widget to lookup flags.	UtilityNetworkTraceViewModel
String	The Geodatabase version to pass into the trace.	UtilityNetworkTraceViewModel
GoToOverride	This function provides the ability to override either the MapView goTo() or SceneView goTo() methods.	UtilityNetworkTraceViewModel
ResultAreaPropertiesExtend	The properties to determine the size and color of the result area convex hull or buffer, and determines if it displays on the map when the trace completes.	UtilityNetworkTraceViewModel
String []	An array of global Ids of traces to select on initial load.	UtilityNetworkTraceViewModel
Boolean	When true, the utility network elements are selected in the view when traces are completed.	UtilityNetworkTraceViewModel
Boolean	When true, a graphic layer is added to the view to highlight the utility network elements when traces are completed.	UtilityNetworkTraceViewModel
Boolean	Determines whether to show the list of selected features from completed traces.	UtilityNetworkTraceViewModel
String	The view model's state.	UtilityNetworkTraceViewModel
TraceResultExtend []	Stores the result of completed traces.	UtilityNetworkTraceViewModel
UtilityNetwork	Determines the utility network to use.	UtilityNetworkTraceViewModel
MapView	The view from which the widget will operate.	UtilityNetworkTraceViewModel

Property Details

declaredClass Inherited Property declaredClass Stringreadonly Inherited from Accessor

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

defaultGraphicColor Property defaultGraphicColor GraphicColor Since: ArcGIS Maps SDK for JavaScript 4.23 UtilityNetworkTraceViewModel since 4.22, defaultGraphicColor added at 4.23.

The default color to assign the aggregated geometry of a trace result.

Default Value:{ color: [255, 255, 0, 0.6], haloOpacity: 0.9, fillOpacity: 0.2, hex: "#FFFF00" }

enableResultArea Property enableResultArea Boolean Since: ArcGIS Maps SDK for JavaScript 4.27 UtilityNetworkTraceViewModel since 4.22, enableResultArea added at 4.27.

When true, provides the ability to show the convex hull or buffer.

Default Value:false

flags Property flags FlagProperty[]

An array of map points to load into the widget to lookup flags.

Default Value:[]

Example

const unt = new UtilityNetworkTrace({
 view: view,
 showSelectionAttributes: true,
 selectOnComplete: true,
 showGraphicsOnComplete: true,
 selectedTraces: ["{E8D545B8-596D-4656-BF5E-16C1D7CBEC9B}"],
 flags: [
   {
     type: "starting-point",
     mapPoint: {
       spatialReference: { latestWkid: 3857, wkid: 102100 },
       x: -9814829.166046409,
       y: 5127094.1017433
     }
   },
   {
     type: "barrier",
     mapPoint: {
     spatialReference: { latestWkid: 3857, wkid: 102100 },
       x: -9814828.449441982,
       y: 5127089.085566963
     }
   }
 ]
});

gdbVersion Property gdbVersion String

The Geodatabase version to pass into the trace.

Default Value:"sde.DEFAULT"

goToOverride Property goToOverride GoToOverride

This function provides the ability to override either the MapView goTo() or SceneView goTo() methods.

See also

Example

// The following snippet uses the Search widget but can be applied to any
// widgets that support the goToOverride property.
search.goToOverride = function(view, goToParams) {
  goToParams.options = {
    duration: updatedDuration
  };
  return view.goTo(goToParams.target, goToParams.options);
};

resultAreaProperties Property resultAreaProperties ResultAreaPropertiesExtend Since: ArcGIS Maps SDK for JavaScript 4.27 UtilityNetworkTraceViewModel since 4.22, resultAreaProperties added at 4.27.

The properties to determine the size and color of the result area convex hull or buffer, and determines if it displays on the map when the trace completes.

Default Value:{ type: "convexhull", distance: 10, unit: "meters", areaUnit: "square-meters", color: { color: [255, 165, 0, 0.5], haloOpacity: 0.9, fillOpacity: 0.2, hex: "#ffa500" }, show: false }

Example

const unt = new UtilityNetworkTrace({
 un: un,
 view: view,
 enableResultArea: true,
 resultAreaProperties: {
   type: "buffer",
   distance: 10,
   unit: "feet",
   areaUnit: "square-feet",
   color: {
     color: [255, 165, 0, 0.5],
     haloOpacity: 0.9,
     fillOpacity: 0.2,
     hex: "#ffa500"
   },
   show: true
 }
});

selectedTraces Property selectedTraces String[]

An array of global Ids of traces to select on initial load.

Default Value:[]

selectOnComplete Property selectOnComplete Boolean

When true, the utility network elements are selected in the view when traces are completed.

Default Value:true

showGraphicsOnComplete Property showGraphicsOnComplete Boolean

When true, a graphic layer is added to the view to highlight the utility network elements when traces are completed.

Default Value:true

showSelectionAttributes Property showSelectionAttributes Boolean

Determines whether to show the list of selected features from completed traces.

Default Value:true

state Property state Stringreadonly

The view model's state.

Possible Values:"loading" |"ready"

Default Value:ready

traceResults Property traceResults TraceResultExtend[] Since: ArcGIS Maps SDK for JavaScript 4.27 UtilityNetworkTraceViewModel since 4.22, traceResults added at 4.27.

Stores the result of completed traces.

utilityNetwork Property utilityNetwork UtilityNetwork Since: ArcGIS Maps SDK for JavaScript 4.27 UtilityNetworkTraceViewModel since 4.22, utilityNetwork added at 4.27.

Determines the utility network to use.

view Property view MapView

The view from which the widget will operate.

Method Overview

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Return Type	Summary	Class
Promise<boolean>	Adds a flag point graphic for the click event on the view if there is a feature to query.	UtilityNetworkTraceViewModel
	Adds one or more handles which are to be tied to the lifecycle of the object.	Accessor
	Creates a graphic from the trace result and adds it to the map.	UtilityNetworkTraceViewModel
Promise	Create a graphic on the view’s graphics for the aggregated results of all the features returned by the trace.	UtilityNetworkTraceViewModel
	Adds the selected terminal to a flag point.	UtilityNetworkTraceViewModel
Promise<boolean>	Get all parameters for the trace type selected to be run before executing the trace.	UtilityNetworkTraceViewModel
	Change the graphic color for the aggregated results of a trace.	UtilityNetworkTraceViewModel
ValidSetup	May be used to verify if all requirements are met to execute a trace (at least 1 starting point and at least 1 trace type selected).	UtilityNetworkTraceViewModel
Boolean	Indicates if any selection exists on the view.	UtilityNetworkTraceViewModel
	Removes a specific trace from the results.	UtilityNetworkTraceViewModel
Promise<Graphic>	Creates a buffer or convex hull graphic of the trace result.	UtilityNetworkTraceViewModel
Promise<TraceResultExtend>	Executes the trace and returns all trace results as graphics and/or feature selections and functions.	UtilityNetworkTraceViewModel
Array<(EdgeSourceJSON\|JunctionSourceJSON)>	Gets the valid edge and junction layers within the view that are part of the Utility Network and can be used for placing flags in the view.	UtilityNetworkTraceViewModel
Boolean	Returns true if a named group of handles exist.	Accessor
Promise<UtilityNetwork>	Reads the web map and loads the UtilityNetwork if it exists.	UtilityNetworkTraceViewModel
	Enables or disables the filter barrier setting on barrier flags.	UtilityNetworkTraceViewModel
	Is used to merge the feature selections in the layer views when multiple traces are run.	UtilityNetworkTraceViewModel
Promise<FeatureSetInfo []>	Query the layers by ObjectID for more attributes not present on the trace result elements.	UtilityNetworkTraceViewModel
Promise<boolean>	Takes the result of a hit test to lookup the asset to create a flag for the trace.	UtilityNetworkTraceViewModel
	Removes all the graphics from the result area graphic layer	UtilityNetworkTraceViewModel
	Removes the selected flag from the view.	UtilityNetworkTraceViewModel
	Removes a group of handles owned by the object.	Accessor
	Removes the result area graphic from the `Map`.	UtilityNetworkTraceViewModel
	Removes a specific trace result graphic from the view’s graphics.	UtilityNetworkTraceViewModel
	Removes the selection from the layer view.	UtilityNetworkTraceViewModel
	Removes the selected terminal from the flag.	UtilityNetworkTraceViewModel
	Clears all inputs (flags, trace types) and all results (selections, graphics) in the view.	UtilityNetworkTraceViewModel
	Performs a selection on a layer view based on a list of ObjectIDs.	UtilityNetworkTraceViewModel
	Loops through the trace result elements to group them by network source id and selects them on the layer view.	UtilityNetworkTraceViewModel
	Set the trace type to be run from the available trace configurations in the WebMap.	UtilityNetworkTraceViewModel
	Preset a trace type to be run from the available trace configurations in the WebMap when the widget loads.	UtilityNetworkTraceViewModel
	Zoom to a flag's feature or a result feature in the view.	UtilityNetworkTraceViewModel

Method Details

addFlagByHit Method addFlagByHit(type){Promise<boolean>}

Adds a flag point graphic for the click event on the view if there is a feature to query.

Parameter

type String

The type of flag can be a "starting point" or a "barrier".

Returns

Type	Description
Promise<boolean>	When resolved, response is `true` if there is a feature to query in the view.

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.

addResultAreaToMap Method addResultAreaToMap(trace) Since: ArcGIS Maps SDK for JavaScript 4.27 UtilityNetworkTraceViewModel since 4.22, addResultAreaToMap added at 4.27.

Creates a graphic from the trace result and adds it to the map. If a trace has both aggregated geometries and elements as results, aggregated geometries will be used to generate this area.

Parameter

trace TraceResultExtend

The aggregate of the trace configuration settings and the results for that trace.

addResultGraphicToView Method addResultGraphicToView(trace, color){Promise}

Create a graphic on the view’s graphics for the aggregated results of all the features returned by the trace.

Parameters

trace TraceResultExtend

The aggregate of the trace configuration settings and the results for that trace.

color GraphicColor

The color for the graphic of the trace results in the view’s graphics.

Returns

Type	Description
Promise	Resolves when the graphics are added to the view.

addTerminal Method addTerminal(selectedTerminal, feature)

Adds the selected terminal to a flag point.

Parameters

selectedTerminal String

The terminal id of the selected terminal.

feature FlagProperty

The flag to assign the terminal.

callTrace Method callTrace(){Promise<boolean>}

Get all parameters for the trace type selected to be run before executing the trace.

Returns

Type	Description
Promise<boolean>	When resolved, response is `true` when the parameters from the trace type have loaded.

changeResultGraphicColor Method changeResultGraphicColor(color, trace)

Change the graphic color for the aggregated results of a trace.

Parameters

color GraphicColor

The color for the graphic of the trace results in the view’s graphics.

trace TraceResultExtend

The aggregate of the trace configuration settings and the results for that trace.

checkCanTrace Method checkCanTrace(){ValidSetup}

May be used to verify if all requirements are met to execute a trace (at least 1 starting point and at least 1 trace type selected).

Returns

Type	Description
ValidSetup	Represents whether a trace is setup correctly.

checkSelectionExist Method checkSelectionExist(){Boolean}

Indicates if any selection exists on the view.

Returns

Type	Description
Boolean	Returns `true` if selection exists on the view.

clearResult Method clearResult(trace)

Removes a specific trace from the results. This will also clear any graphics or selection in the view for that trace.

Parameter

trace TraceItem

The trace that will be cleared.

createResultAreaGraphic Method createResultAreaGraphic(traceResults){Promise<Graphic>}

Creates a buffer or convex hull graphic of the trace result.

Parameter

traceResults TraceResultExtend

The aggregate of the trace configuration settings and the results for that trace.

Returns

Type	Description
Promise<Graphic>	Buffer or convex hull graphic of trace result.

executeTrace Method executeTrace(traceItem, url, params){Promise<TraceResultExtend>}

Executes the trace and returns all trace results as graphics and/or feature selections and functions.

Parameters

traceItem TraceItem

The trace item input for the trace.

url String

The URL of the service being traced.

params TraceParameters

The trace input parameters.

Returns

Type	Description
Promise<TraceResultExtend>	Represents the trace results and its properties.

getValidSources Method getValidSources(){Array<(EdgeSourceJSON|JunctionSourceJSON)>}

Gets the valid edge and junction layers within the view that are part of the Utility Network and can be used for placing flags in the view.

Returns

Type	Description
Array<(EdgeSourceJSON\|JunctionSourceJSON)>	The edge or junction layer info.

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");
}

loadUtilityNetwork Method loadUtilityNetwork(){Promise<UtilityNetwork>}

Reads the web map and loads the UtilityNetwork if it exists.

Returns

Type	Description
Promise<UtilityNetwork>	Resolves when the UtilityNetwork has been loaded.

manageFilterBarrier Method manageFilterBarrier(status, feature)

Enables or disables the filter barrier setting on barrier flags.

Parameters

status Boolean

Whether the filter barrier is enabled or disabled.

feature FlagProperty

The barrier flag for which the filter barrier is enabled or disabled.

mergeSelection Method mergeSelection(status, trace)

Is used to merge the feature selections in the layer views when multiple traces are run.

Parameters

status Boolean

If true, the trace selection results are part of the merged selection set.

trace TraceItem

The trace for which the status is defined.

queryFeaturesById Method queryFeaturesById(dataItems){Promise<FeatureSetInfo[]>}

Query the layers by ObjectID for more attributes not present on the trace result elements.

Parameter

dataItems NetworkElement []

An array of NetworkElements.

Returns

Type	Description
Promise<FeatureSetInfo []>	When resolved, an array of FeatureSetInfo is returned.

queryFlagByHitTest Method queryFlagByHitTest(event, flagType){Promise<boolean>}

Takes the result of a hit test to lookup the asset to create a flag for the trace.

Parameters

event CreateToolEventInfo

The create event.

flagType String

The type of flag. It must be either "starting point" or "barrier".

Returns

Type	Description
Promise<boolean>	When resolved, returns `true` for a successful hitTest.

removeAllResultAreaGraphics Method removeAllResultAreaGraphics()

Removes all the graphics from the result area graphic layer

removeFlag Method removeFlag(flag)

Removes the selected flag from the view.

Parameter

flag FlagProperty

The FlagProperty to identify the flag to be removed.

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");

removeResultAreaFromMap Method removeResultAreaFromMap(trace) Since: ArcGIS Maps SDK for JavaScript 4.27 UtilityNetworkTraceViewModel since 4.22, removeResultAreaFromMap added at 4.27.

Removes the result area graphic from the Map.

Parameter

trace TraceResultExtend

The aggregate of the trace configuration settings and the results for that trace.

removeResultGraphicFromView Method removeResultGraphicFromView(trace)

Removes a specific trace result graphic from the view’s graphics.

Parameter

trace TraceResultExtend

The trace for which the graphic will be removed.

removeSelection Method removeSelection()

Removes the selection from the layer view.

removeTerminal Method removeTerminal(selectedTerminal, feature)

Removes the selected terminal from the flag.

Parameters

selectedTerminal String

The terminal id of the selected terminal.

feature FlagProperty

The flag to remove the terminal.

reset Method reset()

Clears all inputs (flags, trace types) and all results (selections, graphics) in the view.

selectFeaturesById Method selectFeaturesById(resultSet)

Performs a selection on a layer view based on a list of ObjectIDs.

Parameter

resultSet NetworkElement []

An array of NetworkElements.

selectResults Method selectResults(resultSet)

Loops through the trace result elements to group them by network source id and selects them on the layer view.

Parameter

resultSet NetworkElement []

An array of NetworkElements.

selectTraces Method selectTraces(state, traceId)

Set the trace type to be run from the available trace configurations in the WebMap.

Parameters

state Boolean

This is true if the trace is selected.

traceId String

The globalid of the trace configuration.

selectTracesOnLoad Method selectTracesOnLoad()

Preset a trace type to be run from the available trace configurations in the WebMap when the widget loads.

zoomToAsset Method zoomToAsset(geometry)

Zoom to a flag's feature or a result feature in the view.

Parameter

geometry GoToTarget2D|GoToTarget3D

The geometry to zoom to.

Type Definitions

AssetGroupJSON Type Definition AssetGroupJSON Object

AssetGroupJSON represents the asset group. The asset group is the subtype field and represents the major classification of utility network classes.

Properties: assetGroupCode Number

The asset group code.

assetGroupName String

The asset group name.

assetTypes AssetTypeJSON []

The asset type.

AssetTypeJSON Type Definition AssetTypeJSON Object

AssetTypeJSON represents asset type. Attribute domains are assigned on the asset type field at the subtype level for each network class. It represents the minor classification of the utility network classes.

Properties: assetTypeCode Number

The asset type code.

assetTypeName String

The asset type name.

terminalConfigurationId Number

The id of the terminal configuration.

DisplayField Type Definition DisplayField Object

DisplayField represents the attribute field used as a display label for flags and selected features.

Properties: field String

The feature's display field.

value String

The value of the field.

EdgeSourceJSON Type Definition EdgeSourceJSON Object

EdgeSourceJSON represents the line layers that participate in the utility network service.

Properties: layerId Number

The layer id of the line layer.

assetGroups AssetGroupJSON []

The asset group attribute values for the line layer.

sourceId Number

The network source id of the line layer.

FeatureSetInfo Type Definition FeatureSetInfo Object

FeatureSetInfo represents the information for the results in the featureset.

Properties: layer FeatureLayer

The FeatureLayer of the dataset.

featureSet FeatureSet

The FeatureSet.

FlagProperty Type Definition FlagProperty Object

FlagProperty represents the properties to define each flag point (starting points and barriers).

Properties: allTerminals TerminalConfiguration

The available terminals to define the permissible paths based on the terminal configurations. The default terminal is always set.

details any

All the information returned by the hitTest.

displayField DisplayField

The display field of the flag.

id Number

The id of the flag.

mapGraphic Graphic

The flag graphic.

mapPoint Point

The geometry point of the flag.

selectedTerminals Number []

The terminals that are selected for the flag (this can be the default terminal or terminals selected by the end-user).

type String

The flag type being set. Must be either "starting point" or "barrier".

Possible Values

Value Description

starting-point The flag set will be the starting location of the trace.

barrier The flag set will mark the location to stop the trace.

GraphicColor Type Definition GraphicColor Object

GraphicColor represents the color for the trace result graphic in the graphics layer.

Properties: color Number []

The color of the trace result graphic in the view.

haloOpacity Number

The opacity of the graphic symbol's halo.

hex String

The color of the trace result graphic in the color picker.

JunctionSourceJSON Type Definition JunctionSourceJSON Object

JunctionSourceJSON represents the point layers that participate in the utility network service.

Properties: layerId Number

The layer id of the point layer.

assetGroups AssetGroupJSON []

The asset group attribute values for the point layer.

sourceId Number

The network source id of the point layer.

ResultAreaPropertiesExtend Type Definition ResultAreaPropertiesExtend Object

ResultAreaPropertiesExtend represents the properties to determine the size and color of the result area convex hull or buffer, and whether it displays on the map when the trace completes.

Properties: type String

The geometry of the result area. The convex hull is the smallest convex polygon enclosing all the result elements. If a distance is defined, it will be applied as a buffer to the convex hull. The buffer is the polygon generated from an offset at each feature's vertices. The distance value will be used to buffer the features.

Possible Values:"buffer"|"convexhull"

distance Number

The buffer or padding added to the result area.

unit LinearUnits

Units for linear measurements.

areaUnit AreaUnits

Units for area measurements.

color GraphicColor

The color for the result area graphic.

show Boolean

Determines if the area is shown on the map.

TraceItem Type Definition TraceItem Object

TraceItem extends the named trace configuration and adds a property to manage the selection on the view.

Property: selected Boolean

Returns true if there is a selection on the view for a trace.

TraceResultExtend Type Definition TraceResultExtend Object

TraceResultExtend organizes the results based on the trace configuration and the trace results.

Properties: TraceItem TraceItem

TraceItem extends the named trace configuration and adds a property to manage the selection on the view.

TraceResult TraceResult

The collection of results returned from the trace.

selectionEnabled Boolean

Returns true if selection is enabled.

graphicEnabled Boolean

Returns true if graphic is enabled.

graphicColor GraphicColor

The color for the graphic of the trace results in the graphics layer.

status String

The current status of the trace to return errors from the server.

ValidSetup Type Definition ValidSetup Object

ValidSetup verifies whether a trace meets all the requirements before it can execute.

Properties: status Boolean

Is true if the requirements are met.

issues String []

An array of error messages for the missing requirements.