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Application module: Expression assignment ISO/WD 10303-1491

Cover page
Table of contents
Copyright
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviations

4 Information requirements
   4.1 Required AM ARM
   4.2 ARM type definition
   4.3 ARM entity definition
5 Module interpreted model
   5.1 Mapping specification
   5.2 MIM EXPRESS short listing

A MIM short names
B Information object registration
C ARM EXPRESS-G   EXPRESS-G
D MIM EXPRESS-G   EXPRESS-G
E Computer interpretable listings
Bibliography
Index

4 Information requirements

This clause specifies the information requirements for the Expression assignment application module. The information requirements are specified as the Application Reference Model (ARM) of this application module.

NOTE 1  A graphical representation of the information requirements is given in Annex C.

NOTE 2  The mapping specification is specified in 5.1. It shows how the information requirements are met by using common resources and constructs defined or imported in the MIM schema of this application module.

The following EXPRESS specification begins the Expression_assignment_arm schema and identifies the necessary external references.

EXPRESS specification:

*)
SCHEMA Expression_assignment_arm;
(*

4.1 Required AM ARM

The following EXPRESS interface statement specifies the elements imported from the ARM of another application module.

EXPRESS specification:

*)
USE FROM Expression_arm;    --  ISO/TS 10303-1342
(*

NOTE 1   The schemas referenced above are specified in the following part of ISO 10303:

Expression_arm ISO/TS 10303-1342

NOTE 2   See Annex C, Figures C.1and C.2 for a graphical representation of this schema.

4.2 ARM type definition

This subclause specifies the ARM type for this application module. The ARM type and definition is specified below.

4.2.1 expression_assignment_item   EXPRESS-G

The expression_assignment_item type is an extensible list of alternate data types. Additional alternate data types are specified in select data types that extend the expression_assignment_item type.

NOTE   This empty extensible select requires extension in a further module to ensure that entities that refer to it have at least one valid instantiation.

EXPRESS specification:

*)
TYPE expression_assignment_item = EXTENSIBLE GENERIC_ENTITY SELECT;
END_TYPE;
(*

4.3 ARM entity definition

This subclause specifies the ARM entity for this module. The ARM entity is an atomic element that embodies a unique application concept and contains attributes specifying the data elements of the entity. The ARM entity and definition is specified below.

4.3.1 Expression_assignment   EXPRESS-GMapping table

An Expression_assignment is the assignment of an expression to something.

EXPRESS specification:

*)
ENTITY Expression_assignment;
  expression : Expression;
  item : expression_assignment_item;
END_ENTITY;
(*

Attribute definitions:

expression: the expression being assigned

item: the item to which the expression is being assigned



*)
END_SCHEMA;  -- Expression_assignment_arm
(*


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