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Feature restrictions

Feature restrictions are imposed at the feature class level to help promote data accuracy and correctness. Their purpose is to restrict the types of rules that can be added to a utility network. For example, logically, a line feature should not be allowed to contain a device feature. Feature restrictions are system maintained and cannot be modified or removed.

Features can connect and associate as long as feature restrictions are respected and network rules exist to allow such relationships.

Dive-in:
An exception to this axiom is for two edge elements that share the same endpoint and have the same Asset group and Asset type. These edge features can connect without a user defined intermediate junction feature or a network rule. In this situation, a system junction is created and connectivity is established when the network topology is validated or enabled.

Rules between features that are considered valid for feature restrictions (geometric coincidence and association) can be added or imported into a utility network. Network rules allow more control for defining valid connectivity or association between features, but must respect existing system-provided feature restrictions. To learn more, see Network rules.

Each section below shows the valid relationships between classes for each type of geometric coincidence and association.

Valid geometric coincidence

Geometric coincidence-based connectivity is permitted between a point and a line, as well as two lines with an intermediate point.

Valid geometric coincidence

Green cells in the table above indicate that the relationship is acceptable between classes in a utility network; a rule can be created for specific asset groups and asset types in those classes. The red cells represent relationships that will generate error features. The remaining cells represent feature restrictions that exist for a utility network. Such relationships will not support rules.

Valid connectivity associations

A connectivity association is permitted between two points.

Valid connectivity associations

Green cells indicate a rule can be created. Rules cannot be created for cells that are not shaded green.

Valid containment associations

In a containment association, point, line, and polygon features can serve as a container or content feature.

Feature restrictions for containment

Green cells indicate a rule can be created. Rules cannot be created for cells that are not shaded green.

Valid structural attachment associations

A structural attachment association is permitted between two points.

Valid structural attachment associations

Green cells indicate a rule can be created. Rules cannot be created for cells that are not shaded green.