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

5.2 MIM EXPRESS short listing

This clause specifies the EXPRESS schema derived from the mapping table. It uses elements from the common resources or from other application modules and defines the EXPRESS constructs that are specific to this part of ISO 10303.

This clause constitutes the Module Interpreted Module (MIM) of the application module.

This clause also specifies the modifications that apply to the constructs imported from the common resources.

The following restrictions apply to the use, in this schema, of constructs defined in common resources or in application modules:

EXPRESS specification:

*)
SCHEMA Layer_assignment_mim;

USE FROM Foundation_representation_mim;    --  ISO/TS 10303-1006

USE FROM Group_mim;    --  ISO/TS 10303-1113

USE FROM presentation_organization_schema    --  ISO 10303-46
  (presentation_layer_assignment);

USE FROM geometry_schema    --  ISO 10303-42
  (geometric_representation_item);

USE FROM topology_schema    --  ISO 10303-42
  (topological_representation_item);
(*

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

Foundation_representation_mim ISO/TS 10303-1006
Group_mim ISO/TS 10303-1113
presentation_organization_schema ISO 10303-46
geometry_schema ISO 10303-42
topology_schema ISO 10303-42

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

5.2.1 MIM entity definition

This subclause specifies the MIM entity for this module. The MIM entity and definition is specified below.

5.2.1.1 rep_item_group   EXPRESS-G

A rep_item_group is a type of group and a type of representation_item. A rep_item_group may be part of a layer or a template.

EXPRESS specification:

*)
ENTITY rep_item_group
  SUBTYPE OF (group, representation_item);
WHERE
  WR1: SIZEOF(USEDIN(SELF,'PRESENTATION_ORGANIZATION_SCHEMA.' + 'PRESENTATION_LAYER_ASSIGNMENT.' + 'ASSIGNED_ITEMS')) > 0;
  WR2: SIZEOF(QUERY(r <* USEDIN(SELF,'REPRESENTATION_SCHEMA.' + 'REPRESENTATION.' + 'ITEMS') | r.name = 'group representation')) > 0;
  WR3: SIZEOF(QUERY(ga <* USEDIN(SELF,'MANAGEMENT_RESOURCES_SCHEMA.' + 'GROUP_ASSIGNMENT.' + 'ASSIGNED_GROUP') | ga.role.name <> 'group membership')) = 0;
  WR4: SIZEOF(['GEOMETRY_SCHEMA.' + 'GEOMETRIC_REPRESENTATION_ITEM', 'TOPOLOGY_SCHEMA.' + 'TOPOLOGICAL_REPRESENTATION_ITEM', 'REPRESENTATION_SCHEMA.' + 'MAPPED_ITEM', 'PRESENTATION_APPEARANCE_SCHEMA.' + 'STYLED_ITEM'] * TYPEOF(SELF)) = 1;
END_ENTITY;
(*

Formal propositions:

WR1: A rep_item_group shall be contained in the set of assigned_items of a presentation_layer_assignment.

WR2: A rep_item_group shall be contained in the set of items of a representation with a name of 'group representation'.

WR3: The rep_item_group shall only be referenced by group_assignments that reference as role an object_role that has a name of 'group membership'.

WR4: The items in a rep_item_group shall be of type geometric_representation_item, topological_representation_item, mapped_item, or styled_item.



*)
END_SCHEMA;  -- Layer_assignment_mim
(*

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