Table 6.98—DRM_Feature_ID_Control_Link
|
Property |
Description |
||||||
|
Superclass |
|||||||
|
Class |
· <DRM Feature ID Control Link> |
||||||
|
Subclass |
· none |
||||||
|
Definition |
This DRM class provides the specialized <DRM Control Link> used to provide the connection between an ordered aggregation of <DRM Expression>s and the target fields of a <DRM Feature ID>. The expression_index field is a 1-based index into the ordered aggregation of <DRM Expression>s, and is used to select the specific <DRM Expression>s that controls the value of <DRM Feature ID>’s ID field. |
||||||
|
Example(s) |
· Consider a <DRM Feature Model> containing a <DRM Feature Node>, which has a <DRM Feature ID> component. In this case, the data provider wishes to ensure that each <DRM Feature Model Instance> uses a unique <DRM Feature ID> for this node. In order to do this, the data provider attaches a <DRM Feature ID Control Link> to the <DRM Feature ID> object, where the ID field's controlling <DRM Expression> is a <DRM Variable>. In this way, each <DRM Feature Model Instance> provides a different ID for the <DRM Feature Node> within the <DRM Model>. |
||||||
|
Inherited field elements |
|
||||||
|
Field elements |
|
||||||
|
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) |
· one or more {ordered} <DRM Expression>s |
||||||
|
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) |
· one or more <DRM Feature ID>s |
||||||
|
Constraints |
· none |
||||||
|
Notes |
1 A text description of what the <DRM Control_Link> is for. 2 Index of the expression whose value controls the ID of the affected <DRM Feature ID> object. |
||||||
|
Class diagram |