Package com.esri.arcgisruntime.geotriggers

Class FeatureFenceParameters

java.lang.Object

com.esri.arcgisruntime.geotriggers.FenceParameters

com.esri.arcgisruntime.geotriggers.FeatureFenceParameters

public class FeatureFenceParameters
extends FenceParameters

Geotrigger fence data created from features.

The features that create a FeatureFenceParameters provide a set of geometries (and attributes) that define targets for the Geotrigger. For example, if the condition is "notify me when my position comes within 50 meters of one of my target areas", the fence data are "my target areas" and each Feature is one target area.

Create a FeatureFenceParameters using a FeatureTable. The features can have point, line, or polygon geometry. For points and lines, you must also supply a FenceParameters.getBufferDistance(). Each feature in the table represents a single fence.

You can filter features using attributes or geometry by supplying a where clause. For example, you could further refine "my target areas" to be "my target areas that are open and are in California".

The number of features fetched by querying an online table is limited by the layer's ArcGISFeatureLayerInfo.getMaxRecordCount(). Service feature tables that support pagination (ArcGISFeatureLayerInfo.isSupportsPagination()) are not subject to the maximum feature count limit.

When saving new geotriggers into a web map, ensure all feature layers are assigned a unique Layer.getId(). This ensures the saved getFeatureTable() is associated with the corresponding layer. When the saved ArcGISMap and GeoModel.getGeotriggersInfo() are loaded, the layer and geotrigger will use the same FeatureTable.

A FenceGeotrigger can also take into account floors within buildings. If the feature table used to create the FeatureFenceParameters is referenced by a FeatureLayer that is FloorAware, and the LocationDataSource used to create the GeotriggerFeed includes LocationDataSource.Location.KEY_FLOOR information, then fences will only be entered when they are intersected by a LocationDataSource.Location on the correct floor. If the fence or location data does not include valid floor information, the floor is ignored and the fence is entered when it is intersected by the location.

A floor aware feature layer or table must be part of a GeoModel that includes a valid GeoModelFloorDefinition. All layers and tables that are used by the floor definition are loaded when the GeotriggerMonitor is started.

A Location can contain floor property as part of LocationDataSource.Location.getAdditionalSourceProperties(). This can be supplied as part of your own implementation.

Since:

100.12.0

Constructor Summary

Constructors

Constructor	Description
FeatureFenceParameters(FeatureTable featureTable)	Creates a FeatureFenceParameters using all of the features in the FeatureTable.
FeatureFenceParameters(FeatureTable featureTable, double bufferDistance)	Creates a FeatureFenceParameters using all of the features in the FeatureTable.

Method Summary

Modifier and Type	Method	Description
Geometry	getAreaOfInterest()	Gets the geometry that can be used to spatially filter fences.
FeatureTable	getFeatureTable()	Gets the FeatureTable that contains the features to use in the FeatureFenceParameters.
String	getWhereClause()	Gets a where clause that defines the features from the FeatureTable to use as fences.
void	setAreaOfInterest(Geometry areaOfInterest)	Sets the geometry that can be used to spatially filter fences.
void	setWhereClause(String whereClause)	Sets a where clause that defines the features from the FeatureTable to use as fences.

Methods inherited from class com.esri.arcgisruntime.geotriggers.FenceParameters

createFromGeoElement, getBufferDistance

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FeatureFenceParameters

public FeatureFenceParameters(FeatureTable featureTable)

Creates a FeatureFenceParameters using all of the features in the FeatureTable.

Parameters:

featureTable - the FeatureTable that contains the features to use in the FeatureFenceParameters

Throws:

IllegalArgumentException - if featureTable is null

Since:

100.12.0

FeatureFenceParameters

public FeatureFenceParameters(FeatureTable featureTable,
                              double bufferDistance)

Creates a FeatureFenceParameters using all of the features in the FeatureTable.

Parameters:

featureTable - the FeatureTable that contains the features to use in the FeatureFenceParameters

bufferDistance - a buffer distance in meters to apply to the features when checking if a FenceGeotrigger condition is met

Throws:

IllegalArgumentException - if featureTable is null

Since:

100.12.0

Method Detail

getAreaOfInterest

public Geometry getAreaOfInterest()

Gets the geometry that can be used to spatially filter fences.

This needs to be either an Envelope or Polygon. Use this to define which features in the FeatureTable are to be used as fences by defining an area of interest. If this property is null we will use the full extent of the feature table.

Returns:

the geometry that can be used to spatially filter fences, or null if none

Since:

100.12.0

setAreaOfInterest

public void setAreaOfInterest(Geometry areaOfInterest)

Sets the geometry that can be used to spatially filter fences.

This needs to be either an Envelope or Polygon. Use this to define which features in the FeatureTable are to be used as fences by defining an area of interest. If this property is null we will use the full extent of the feature table.

Parameters:

areaOfInterest - the geometry that can be used to spatially filter fences

Since:

100.12.0

getFeatureTable

public FeatureTable getFeatureTable()

Gets the FeatureTable that contains the features to use in the FeatureFenceParameters.

Returns:

the FeatureTable that contains the features to use in the FeatureFenceParameters

Since:

100.12.0

getWhereClause

public String getWhereClause()

Gets a where clause that defines the features from the FeatureTable to use as fences.

The string that is used as the getWhereClause() should follow standard SQL syntax similar to what is discussed in the document SQL reference for query expressions used in ArcGIS. The number of features fetched by querying an online table is limited by the layer's ArcGISFeatureLayerInfo.getMaxRecordCount(). Service feature tables that support pagination (ArcGISFeatureLayerInfo.isSupportsPagination()) are not subject to the maximum feature count limit.

Returns:

a where clause that defines the features from the FeatureTable to use as fences

Since:

100.12.0

setWhereClause

public void setWhereClause(String whereClause)

Sets a where clause that defines the features from the FeatureTable to use as fences.

The string that is used as the setWhereClause(String) should follow standard SQL syntax similar to what is discussed in the document SQL reference for query expressions used in ArcGIS. The number of features fetched by querying an online table is limited by the layer's ArcGISFeatureLayerInfo.getMaxRecordCount(). Service feature tables that support pagination (ArcGISFeatureLayerInfo.isSupportsPagination()) are not subject to the maximum feature count limit.

Parameters:

whereClause - a where clause that defines the features from the FeatureTable to use as fences

Throws:

IllegalArgumentException - if whereClause is null

Since:

100.12.0