ArcGIS Developer Help

ITopologyRule Interface

Provides access to memebers that return information about topology rules.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

When To Use

The ITopologyRule is the main interface for creating and getting information about a topology rule. Use this interface to create a new topology rule between feature classes or for a single feature class. Topology rules can also be specified to the subtype level.

Members

	Name	Description
	AllDestinationSubtypes	Indicates if all destination subtypes are specified for the topology rule.
	AllOriginSubtypes	Indicates if all origin subtypes are specified for the topology rule.
	DestinationClassID	Destination ClassID of the topology rule.
	DestinationSubtype	Destination subtype of the topology rule.
	DestinationSubtypeSpecified	Indicates if a destination subtype has been specified.
	ErrorShapeTypes	Indicates the shape types of errors for the topology rule.
	GUID	GUID of the topology rule.
	Name	Name of the topology rule.
	OriginClassID	Origin ClassID of the topology rule.
	OriginSubtype	Origin subtype of the topology rule.
	OriginSubtypeSpecified	Indicates if an origin subtype has been specified.
	TopologyRuleType	Topology rule type of the topology rule.
	TriggerErrorEvents	Indicates if error events are triggered for the topology rule.

Classes that implement ITopologyRule

Classes	Description
TopologyRule	Esri Topology Rule object.

Remarks

The ITopologyRule interface provides access to members which can be used to assign or retrieve information about a topology rule. Topology rules are cocreateable.

To be added to a topology, a rule must have (at a minimum) its Type and OriginClassID properties defined. Rules which use a destination feature class must also have the DestinationClassID property set.

When specifying the Origin properties, if the OriginSubtype, OriginSubtypeSpecified and AllOriginSubtypes are not specified, the OriginSubtype is set to the default subtype. If no subtypes are defined on the feature class, the OriginSubtype will equal zero. The same is true for the DestinationSubtype, DestinationSubtypeSpecified and AllDestinationSubtypes properties.