Application module: External properties | ISO/TS 10303-1129:2018-11(E) © ISO |
This clause specifies the information requirements for the External properties 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 External_properties_arm schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA External_properties_arm;
(*
The following EXPRESS interface statements specify the elements imported from the ARMs of other application modules.
EXPRESS specification:
*)
USE FROM
External_library_arm;
--
ISO/TS 10303-1778
USE FROM
Identification_assignment_arm;
--
ISO/TS 10303-1021
USE FROM
Independent_property_arm;
--
ISO/TS 10303-1036
USE FROM
Plib_class_reference_arm;
--
ISO/TS 10303-1291
(*
NOTE 1 The schemas referenced above are specified in the following part of ISO 10303:
External_library_arm ISO/TS 10303-1778 Identification_assignment_arm ISO/TS 10303-1021 Independent_property_arm ISO/TS 10303-1036 Plib_class_reference_arm ISO/TS 10303-1291
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 external_property_select type allows for the designation of the data types Plib_property_reference and External_library_property.
EXPRESS specification:
*)
TYPE
external_property_select =
SELECT
(Plib_property_reference,
External_library_property);
END_TYPE;
(*
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.
EXPRESS specification:
*)
ENTITY External_library_property
SUBTYPE OF (Independent_property);
external_id : STRING;
source : External_source;
DERIVE
library_type : STRING := source.id;
END_ENTITY;
(*
Attribute definitions:
external_id: the unique identifier of the referenced entry in the external library.
source: specifies a role of the External_source for the External_library_property.
library_type: the type of library that is used.
EXPRESS specification:
*)
ENTITY Plib_property_reference
SUBTYPE OF (Independent_property);
code : STRING;
version : STRING;
name_scope : Plib_class_reference;
END_ENTITY;
(*
Attribute definitions:
code: the property in the PLIB library. The format of this code is defined in ISO 13584-42.
version: the identification of a particular version of a property in a PLIB library. The format of this version is defined in ISO 13584-42.
name_scope: the Plib_class_reference in which the property is visible.
This subclause specifies the ARM subtype constraint for this module. The subtype constraint places a constraint on the possible super-type / subtype instantiations. The ARM subtype constraint and definition is specified below.
NOTE This constraint limits the instantiation of only the mentioned subtypes because it is not a "TOTAL OVER" constraint; it does not constrain instanciation of possible other subtypes of Independent_property.
EXPRESS specification:
*)
SUBTYPE_CONSTRAINT plib_or_external FOR Independent_property;
ONEOF (Plib_property_reference,
External_library_property);
END_SUBTYPE_CONSTRAINT;
(*
*)
END_SCHEMA; -- External_properties_arm
(*
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