Abstract Class Name: Expression

Superclass - <SEDRIS Abstract Base>

Subclasses

• <Function>
• <Literal>
• <Variable>

Definition

An instance of a concrete class derived from this DRM class expresses values that are used by <Control Link> instances and the SEDRIS objects controlled by them.

<Expression> instances represent places within a transmittal where consuming systems shall perform an evaluation in order to get the exact value of the field of an object.

Primary Page in DRM Diagram:

• 16

Secondary Pages in DRM Diagram:

• 3
• 7
• 17
• 23

Example

See individual subclasses for examples.

Constraints

• <<Publishable Object>>
• <<Non Cyclic Aggregations>>

Component of (two-way)

• zero or more <Control Link> instances
• zero or more <Feature Model Instance> instances, each with a <Model Instance Template Indices> link object
• zero or more <Function> instances
• zero or more <Geometry Model Instance> instances, each with a <Model Instance Template Indices> link object

Inherited Field Elements