| Application module: Same as external item | ISO/TS 10303-1402:2019(E) © ISO |
This clause specifies the information requirements for the Same as external item 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 Same_as_external_item_arm schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA Same_as_external_item_arm;
(*
The following EXPRESS interface statement specifies the elements imported from the ARM of another application module.
EXPRESS specification:
*)
USE FROM
External_source_arm;
--
ISO/TS 10303-1331
(*
NOTE 1 The schemas referenced above are specified in the following part of ISO 10303:
External_source_arm ISO/TS 10303-1331
NOTE 2 See Annex C, Figures C.1and C.2 for a graphical representation of this schema.
This subclause specifies the ARM type for this application module. The ARM type and definition is specified below.

The same_as_item type is an extensible list of alternate data types. Additional alternate data types are specified in select data types that extend the same_as_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.
Each list member is an item that can be assigned an activity.
EXPRESS specification:
*)
TYPE
same_as_item =
EXTENSIBLE
GENERIC_ENTITY
SELECT;
END_TYPE;
(*
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.


A Same_as_external_item is a statement that one or more data instances are the same as an item external to the dataset.
NOTE This capability is similar in nature to the SameAs built-in property in the World Wide Web Consortium Web Ontology Language, available from their Web site. SameAs indicates that two individuals or classes have the same 'identity'.
EXPRESS specification:
*)
ENTITY Same_as_external_item;
external_item_id : STRING;
description :
OPTIONAL
STRING;
role : STRING;
external_source : External_source;
items : SET[0:?] OF same_as_item;
END_ENTITY;
(*
Attribute definitions:
external_item_id: the identifier of the external item.
description: the description of the Same_as_external_item.
role: the role of the Same_as_external_item.
external_source: the source, external to the dataset, where the external item is defined or accessible.
items: the items in the dataset that are the same as the external item.
*)
END_SCHEMA; -- Same_as_external_item_arm
(*
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