The SEDRIS Data Representation Model
APPENDIX A - Classes
RGB Colour Control Link

Class Name: RGB Colour Control Link

Superclass - <Control Link>

Subclasses

This DRM class is concrete and has no subclasses.

Definition

An instance of this DRM class is a specialized <Control Link> instance used to provide the connection between an ordered aggregation of <Expression> instances and the target fields of one or more <RGB Colour> instances.

Primary Page in DRM Diagram:

Secondary Pages in DRM Diagram:

Example

See the <CMY Colour Control Link> class for examples, as the use of that class is analogous to how this class is used.

FAQs

No FAQs supplied.

Constraints

Composed of (two-way) (inherited)

Component of (two-way)

Inherited Field Elements

SE_String description; 1

Field Elements

SE_Integer_Unsigned red_expression_index; 2
SE_Integer_Unsigned green_expression_index; 3
SE_Integer_Unsigned blue_expression_index; 4

Notes

Fields Notes

description

The description field specifies a text description of the purpose of the <Control Link> instance.

red_expression_index

The red_expression_index field is a one-based index into the ordered aggregation of <Expression> instances and is used to select the specific <Expression> instance (if any) that controls the red field values of the rgb_data field(s) of the target <RGB Colour> instance(s). If the value is zero, the red field of those <RGB Colour> instance(s) is not controlled.

green_expression_index

The green_expression_index field is a one-based index into the ordered aggregation of <Expression> instances and is used to select the specific <Expression> instance (if any) that controls the green field values of the rgb_data field(s) of the target <RGB Colour> instance(s). If the value is zero, the green field of those <RGB Colour> instance(s) is not controlled.

blue_expression_index

The blue_expression_index field is a one-based index into the ordered aggregation of <Expression> instances and is used to select the specific <Expression> instance (if any) that controls the blue field values of the rgb_data field(s) of the target <RGB Colour> instance(s). If the value is zero, the blue field of those <RGB Colour> instance(s) is not controlled.


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Last updated: July 26, 2006 Copyright © 2006 SEDRIS