Predefined Function

The SEDRIS Data Representation Model APPENDIX A - Classes Predefined Function

Class Name: Predefined Function

Superclass - <Function>

Subclasses

This DRM class is concrete and has no subclasses.

Definition

An instance of this DRM class is a <Function> instance for which the function being used to determine the value of the expression is one of those specified by the SE_Predefined_Function data type.

Primary Page in DRM Diagram:

Secondary Pages in DRM Diagram:

This class appears on only one page of the DRM class diagram.

Example

See the <Property Table Reference Control Link> class, second example.

FAQs

Why isn't <my favorite function> included in the SE_Predefined_Function?: Simple! We didn't think of it. If you'd like to see it, we'd be happy to consider any change request you might offer.

Constraints

Composed of (two-way) (inherited)

zero or more {ordered} <Expression> instances¹

Composed of (two-way)

zero or one <Property Table Reference> instance

Component of (two-way) (inherited)

zero or more <Control Link> instances
zero or more <Feature Model Instance> instances, each through the use of a <Model Instance Template Index> link object
zero or more <Function> instances
zero or more <Geometry Model Instance> instances, each through the use of a <Model Instance Template Index> link object

Notes

Composed of Notes

The <Expression> components of a <Function> instance, if any, represent the arguments of the function being represented, so a <Function> instance has <Expression> components if that <Function> instance takes arguments. The <Expression> components are ordered so as to unambiguously specify which <Expression> component is being supplied for each argument of the <Function> instance. The exact interpretation of each argument is defined by the specific function.

Fields Notes

value_type

The value_type of a <Function> instance specifies the type of value returned.

function

The function field specifies the function to be used to determine the value of the expression when it is evaluated.

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Last updated: July 1, 2011