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Application module:
External representation item |
ISO/TS 10303-1779:2014-02(E)
© ISO
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This clause specifies the information requirements for the
External representation 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
External_representation_item_arm
schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA External_representation_item_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
Foundation_representation_arm;
--
ISO/TS 10303-1006
(*
NOTE 1
The schemas referenced above are specified in the following
part of ISO 10303:
| External_library_arm |
ISO/TS 10303-1778 |
| Foundation_representation_arm |
ISO/TS 10303-1006 |
NOTE 2
See Annex C,
Figures
C.1and C.2
for a graphical representation of this schema.
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.
An External_representation_item is a type of
Representation_item
whose value is defined in an external library.
EXPRESS specification:
*)
ENTITY External_representation_item
SUBTYPE OF (Representation_item);
id : STRING;
external_source : External_source;
END_ENTITY;
(*
Attribute definitions:
id:
the identifier for the External_representation_item.
external_source:
the identification of the external library that provides the value of the
External_source
A External_string_representation_item is a type of
External_representation_item
that is a string defined in an external library.
EXPRESS specification:
*)
ENTITY External_string_representation_item
SUBTYPE OF (External_representation_item);
END_ENTITY;
(*
An Externally_defined_representation is a type of
Representation
that represents a representation that is defined in an
External_source.
EXPRESS specification:
*)
ENTITY Externally_defined_representation
SUBTYPE OF (Representation);
SELF\Representation.items : SET[1:?] OF External_representation_item;
external_source : External_source;
END_ENTITY;
(*
Attribute definitions:
items:
the items of an Externally_defined_representation shall be of type
External_representation_item.
external_source:
the
External_source
where the representation is defined.
*)
END_SCHEMA; -- External_representation_item_arm
(*
© ISO 2014 — All rights reserved
