Class Name: Feature Node

Superclass - Feature Topology

Definition

A zero-dimensional Feature Topology object used to represent the location of a Point Feature and/or the endpoints of one or more Feature Edges.

Primary Page in DRM Diagram:

• 12

Secondary Pages in DRM Diagram:

• 8

Example

1. The location of a small building might be represented by a single Feature Node.
2. The intersection of two roads would be represented by a Feature Node.

FAQs

When are Feature Node objects required?

Feature Nodes are required whenever there are either Point Features or Feature Edges present, regardless of the feature topology level.

Are there any geometric constraints on the Locations that are associated with a Feature Node?

Yes. At all feature topology levels greater than zero, different Feature Nodes cannot share the same Location.

Constraints

• No Attribute Conflicts
• Perimeter Related Feature Topology Partitioning
• Connected Edge Restrictions
• Contained Node Restrictions
• Non Crossing Associations

Associated with (two-way)

• optionally, some Feature Nodes

Composed of (one-way)(inherited)

• optionally, a Feature ID
• optionally, some Property Values

Composed of (one-way)

• optionally, some {ordered} Connected Feature Edges
• optionally, a Contained Within Feature Face
• one Location
• optionally, some Same As Feature Nodes

Component of (one-way)

• optionally, a Contained Feature Node
• optionally, some Feature Edge Terminal Nodes

Component of (two-way)(inherited)

• optionally, some Union of Feature Topologies

Component of (two-way)

• optionally, some Point Features