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Application module:
External class |
ISO/TS 10303-1275:2014-02(E)
© ISO
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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:
-
use of a supertype entity does not make applicable any of its
specializations, unless the specialization is also imported in the
MIM schema;
-
use of a SELECT type does not make applicable any of its listed types
unless the listed type is also imported in the MIM schema.
Short names of entities defined in this schema are described in Annex A. Unambiguous identification of this schema is defined
in Annex B.
EXPRESS specification:
*)
SCHEMA External_class_mim;
USE FROM
basic_attribute_schema
--
ISO 10303-41
(description_attribute,
description_attribute_select);
USE FROM
Class_mim;
--
ISO/TS 10303-1070
USE FROM
External_source_mim;
--
ISO/TS 10303-1331
USE FROM
classification_schema
--
ISO 10303-54
(class);
USE FROM
external_reference_schema
--
ISO 10303-41
(external_source,
externally_defined_item);
USE FROM
Name_assignment_mim;
--
ISO/TS 10303-1340
(*
NOTE 1
The schemas referenced above are specified in the following
part of ISO 10303:
| basic_attribute_schema |
ISO 10303-41 |
| Class_mim |
ISO/TS 10303-1070 |
| External_source_mim |
ISO/TS 10303-1331 |
| classification_schema |
ISO 10303-54 |
| external_reference_schema |
ISO 10303-41 |
| Name_assignment_mim |
ISO/TS 10303-1340 |
NOTE 2
See Annex D,
Figures
D.1and D.2
for a graphical representation of this schema.
This subclause specifies the MIM type
for this application module. The MIM type and
definition is specified below.
The external_class_name_item type is an extension
of the
name_item type.
It adds the data
type
external_class_library
to the list of alternate data types.
EXPRESS specification:
*)
TYPE
external_class_name_item =
SELECT
BASED_ON
name_item
WITH
(external_class_library);
END_TYPE;
(*
This subclause specifies the MIM entities for this
module. The MIM entities and definitions are specified below.
An external_class_library is a type of
external_source
that implements the ARM concept of
External_class_library.
An external_class_libraryidentifies an external class library.
EXPRESS specification:
*)
ENTITY external_class_library
SUBTYPE OF (external_source);
END_ENTITY;
(*
An externally_defined_class is a type of
externally_defined_item
and
class
that implements the ARM concept of
External_class.
An externally_defined_class represents a class whose identification and definition is defined
externally, that is not within this part of ISO 10303.
NOTE
The entity externally_defined_class is identical to the entity of
the same name defined in ISO 10303-214 and ISO 10303-218.
EXPRESS specification:
*)
ENTITY externally_defined_class
SUBTYPE OF (class, externally_defined_item);
END_ENTITY;
(*
*)
END_SCHEMA; -- External_class_mim
(*
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