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Application module:
Attribute classification |
ISO/TS 10303-1246:2014-02(E)
© ISO
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This clause specifies the information requirements for the
Attribute classification
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
Attribute_classification_arm
schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA Attribute_classification_arm;
(*
The following EXPRESS interface statement specifies the elements
imported from the ARM of another application module.
EXPRESS specification:
*)
USE FROM
Class_arm;
--
ISO/TS 10303-1070
(*
NOTE 1
The schemas referenced above are specified in the following
part of ISO 10303:
| Class_arm |
ISO/TS 10303-1070 |
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 classified_attribute_select type is an
extensible list of alternate data types.
Additional alternate data types are specified in select data
types that extend the
classified_attribute_select 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.
A select of the entities whose attribute is being classified.
EXPRESS specification:
*)
TYPE
classified_attribute_select =
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.
An Attribute_classification is an
assertion that an attribute on an instance of an EXPRESS entity is a
member of a Class.
EXAMPLE
Three approval statuses for documents are agreed in a given business
process: 'approved', 'dis-approved' and 'in-work'.
Each of which will be represented by a
Class.
When assigning a status, 'approved' for example, to a given document,
the status will be represented by the attribute
status_name
defined on an instance of the entity,
Approval_status.
The value of this attribute will be identified by an instance of
Attribute_classification in which the
allowed_value
attribute is the Class
'approved', the
attribute_name
attribute is
status_name
and the
classified_entity
attribute is instance of Approval_status.
EXPRESS specification:
*)
ENTITY Attribute_classification;
allowed_value : Class;
attribute_name : STRING;
classified_entity : SET[1:?] OF classified_attribute_select;
END_ENTITY;
(*
Attribute definitions:
allowed_value:
the
Class
that defines the value of the attribute identified by
attribute_name on the entity identified by the
classified_entity attribute.
attribute_name:
the name of the EXPRESS attribute whose value is being assigned.
classified_entity:
an instance of one of the types of
classified_attribute_select.
The instance shall have an attribute or an inherited attribute with name
attribute_name.
Informal propositions:
IR1:
the type of the attribute that is being classified shall not be an
entity data type.
*)
END_SCHEMA; -- Attribute_classification_arm
(*
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