Table 6.125—DRM_Geometry_Topology_Hierarchy

Property

Description

Superclass

· <DRM SEDRIS Abstract Base>

Class

· <DRM Geometry Topology Hierarchy>

Subclass

· <DRM Union Of Geometry Topology>

· <DRM Perimeter Related Geometry Topology>

· <DRM Spatial Index Related Geometry Topology>

Definition

This is an abstract DRM class that specifies a spatially organized hierarchical collection of <DRM Geometry Topology> instances, which includes all of the <DRM Geometry Topology> instances that lie within a defined spatial extent, and are components of a single <DRM Aggregate Geometry>.

Example(s)

· The set of all <DRM Geometry Topology> instances contained within an independent topological surface, organized into a collection of regularly or irregularly shaped tiles.

Inherited field elements

field_name	range	Field_Data_Type
none

Field elements

field_name	range	Field_Data_Type
geometry_topology_level		Geometry_Topology_Level

Associated to (one-way) (inherited)

· none

Associated to (one-way)

· none

Associated by (one-way) (inherited)

· none

Associated by (one-way)

· none

Associated with (two-way) (inherited)

· none

Associated with (two-way)

· none

Composed of (two-way) (inherited)

· none

Composed of (two-way)

· none

Composed of (two-way metadata) (inherited)

· none

Composed of (two-way metadata)

· none

Component of (two-way) (inherited)

· none

Component of (two-way)

· zero or more <DRM Aggregate Geometry>s

Constraints

· none

Notes

none

Class diagram

<DRM Geometry Topology Hierarchy>