Class Name: Attribute Set Index Control Link
Definition
The specialized Control Link
used to provide the connection between an ordered list
of Expressions and the target
index field in an
Attribute Set Index.
The expr_index
field is a 1-based index into the ordered
aggregation of Expressions,
and is used to select the specific
Expression that defines
Attribute Set Index's
index field.
Primary Page in DRM Diagram:
Secondary Pages in DRM Diagram:
Example
- A tree canopy would appear differently at
different times of the year, with a different color
and texture. This could be achieved by using a
different Attribute Set for each period of
the year. Each Attribute Set would contain
the appropriate Color and
Image Mapping Function. An
Attribute Set Index Control
Link would be used
to allow the appropriate Attribute Set to be
selected.
FAQs
- What does an Attribute
Set Index Control Link control?
- An Attribute Set Index
Control Link controls the value of the
index stored in the
Attribute Set Index.
- Can I use an Attribute
Set Index Control Link to change the
Attribute Set Table accessed within an
Attribute Set Table Group?
- No. The index always refers to the primary
Attribute Set.
- Can I use an Attribute
Set Index Control Link to switch from one
Attribute Set Table Group to a
different Attribute Set Table Group?
- No. The link to the Attribute Set
Table Group is an association within the transmittal, and
associations cannot be changed dynamically.
Constraints
None.
Composed of (two-way)(inherited)
Component of (two-way)
Notes
Fields Notes
A text description of what the Control_Link is for
index of the expression whose value controls the
index of the affected <Attribute Set Index>
Prev: Attribute Set Index.
Next: Attribute Set Table.
Up:Index.