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Application module: Classification assignment | ISO/TS 10303-1114:2004(E) © ISO |
This clause specifies the information requirements for the Classification assignment 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.
The following EXPRESS specification begins the Classification_assignment_arm schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA Classification_assignment_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 classification_item type is an extensible list of alternate data types. Additional alternate data types are specified in select data types that extend the classification_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.
EXPRESS specification:
*)
TYPE
classification_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.
EXPRESS specification:
*)
ENTITY Classification_assignment;
assigned_class : Class;
items : SET[1:?] OF classification_item;
role :
OPTIONAL
STRING;
END_ENTITY;
(*
Attribute definitions:
assigned_class: the Class that is considered in the assignment.
items: the set or more instances of types listed in classification_item that are classified.
role: the meaning of the relationship between the assigned_class and the associated items. The value of this attribute need not be specified.
NOTE When there is a specific role, the assignment has extra information that can be useful to differentiate this assignment from others.When all the items are assigned to the same Class in the same way there is no need to specify a role. Just when it is needed to distinguish them, the role attribute is useful.
EXAMPLE 1 The role for 'electromagnetic compatibility' has the associated object that is a classification that categorizes the classified element in respect of its ability to comply with requirements concerning electromagnetic interference.
EXAMPLE 2 The role for 'environmental conditions' has the associated object that is a classification that categorizes the classified element in respect of its ability to comply with environmental impact requirements.
*)
END_SCHEMA; -- Classification_assignment_arm
(*
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