Class

• <DRM Property Set Table Group>

Superclass

• <DRM SEDRIS Abstract Base>

Subclass

• None.

Definition

An instance of this DRM class specifies an interchangeable group of one or more <DRM Property Set Table> instances. The primary <DRM Property Set Table> instance in the group is indicated by the primary_table_index. When a reference is made to an <DRM Property Set Table> instance (for example, from an <DRM Property Set Index> component of a <DRM Polygon> instance), the reference identifies the <DRM Property Set Table Group> instance and the index within the <DRM Property Set Table> instance, but not the specific <DRM Property Set Table> instance within the <DRM Property Set Table Group> instance. By definition, a <DRM Property Set Index> instance refers to a <DRM Property Set> instance from the primary <DRM Property Set Table> instance of the indicated <DRM Property Set Table Group> instance. An alternate <DRM Property Set Table> instance from within the <DRM Property Set Table Group> instance can be chosen at the discretion of the data consumer.

The primary_table_index (which is 1-based) specifies the primary <DRM Property Set Table> component from the ordered <DRM Property Set Table> components of the given <DRM Property Set Table Group> instance.

The table_size field specifies the size of each <DRM Property Set Table> instance within the given <DRM Property Set Table Group> instance.

Class diagram

Figure 6.231 — DRM_Property_Set_Table_Group

Constraints

• Property Set Table size
• Publishable Object

Example(s)

• An occurrence of one <DRM Property Set Table Group> instance in the transmittal, and that group has only one <DRM Property Set Table> instance within the group. That <DRM Property Set Table> instance is the one and only <DRM Property Set Table> instance for the entire transmittal.

• A <DRM Property Set Table Group> instance with two <DRM Property Set Table> components, one for normal, OTW viewing, the other to change the appearance of the view to be a view as seen through night vision goggles.

• An <DRM Property Set Table Group> instance with three <DRM Property Set Table> components with the same usage of OTW. One <DRM Property Set Table> instance defines the colours and textures as originally created by the data modelers. The second <DRM Property Set Table> instance has different shades of blue for the lakes and skies to satisfy one perception of the lakes and skies. The third <DRM Property Set Table> instance contains yet another set of blues for the lakes, different textures for the lakes and different shades of green for the trees and tanks, to satisfy a second perception of the reality of these objects.