Application module: Layer assignment ISO/TS 10303-1008:2014-02(E)
© ISO

Cover page
Table of contents
Copyright
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
    3.1 Terms and definitions
    3.2 Abbreviated terms

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

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

4 Information requirements

This clause specifies the information requirements for the Layer 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.

This clause defines the information requirements to which implementations shall conform using the EXPRESS language as defined in ISO 10303-11. The following begins the Layer_assignment_arm schema and identifies the necessary external references.

EXPRESS specification:

*)
SCHEMA Layer_assignment_arm;
(*

4.1 Required AM ARMs

The following EXPRESS interface statements specify the elements imported from the ARMs of other application modules.

EXPRESS specification:

*)
USE FROM Foundation_representation_arm;    --  ISO/TS 10303-1006

USE FROM Group_arm;    --  ISO/TS 10303-1113
(*

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

Foundation_representation_arm ISO/TS 10303-1006
Group_arm ISO/TS 10303-1113

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 structuring_method_select   EXPRESS-G

The structuring_method_select type is an extensible list of alternate data types that allows for the designation of the data types Group and Layer.

NOTE   The list of entity data types may be extended in application modules that use the constructs of this module.

EXPRESS specification:

*)
TYPE structuring_method_select = EXTENSIBLE SELECT
   (Group,
    Layer);
END_TYPE;
(*

4.3 ARM entity definitions

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

4.3.1 Layer   EXPRESS-GMapping table

A Layer is a general structure for collection of Representation_items. Layers shall not be nested, that is, a layer must not be contained in another layer.

EXPRESS specification:

*)
ENTITY Layer;
  id : STRING;
  description : STRING;
  layered_elements : SET[1:?] OF Representation_item;
END_ENTITY;
(*

Attribute definitions:

id: specifies the layer identifier.

description: the text that provides further information about the Layer.

layered_elements: specifies the set of Representation_items assigned to the layer.

4.3.2 Structuring_method_hierarchy   EXPRESS-GMapping table

A Structuring_method_hierarchy is a mechanism to build up a nesting of Group objects within Group or Layer objects in structuring methods.

NOTE    This mechanism facilitates the nesting of groups in other groups and the nesting of groups in a layer, but not the nesting of one layer in another layer or group.

EXPRESS specification:

*)
ENTITY Structuring_method_hierarchy;
  relating : structuring_method_select;
  related : Group;
END_ENTITY;
(*

Attribute definitions:

relating: specifies the structuring_method_select in that the Group is nested.

related: specifies the Group object to be nested.



*)
END_SCHEMA;  -- Layer_assignment_arm
(*


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