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Application module: Condition | ISO/TS 10303-1253:2004(E) © ISO |
This clause specifies the information requirements for the Condition 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 Condition_arm schema and identifies the necessary external references.
EXPRESS specification:
*)
SCHEMA Condition_arm;
(*
The following EXPRESS interface statement specifies the elements imported from the ARM of another application module.
EXPRESS specification:
*)
USE FROM
Classification_assignment_arm;
--
ISO/TS 10303-1114
(*
NOTE 1 The schemas referenced above are specified in the following part of ISO 10303:
Classification_assignment_arm ISO/TS 10303-1114
NOTE 2 See Annex C, Figures C.1and C.2 for a graphical representation of this schema.
This subclause specifies the ARM types for this application module. The ARM types and definitions are specified below.
The condition_classification_item type is an extension of the classification_item type. It adds the data types Condition, Condition_assignment, Condition_parameter and Condition_relationship to the list of alternate data types.
NOTE The list of entity data types may be extended in application modules that use the constructs of this module.
EXPRESS specification:
*)
TYPE
condition_classification_item =
EXTENSIBLE
GENERIC_ENTITY
SELECT
BASED_ON
classification_item
WITH
(Condition,
Condition_assignment,
Condition_parameter,
Condition_relationship);
END_TYPE;
(*
The condition_item type is an extensible list of alternate data types. Additional alternate data types are specified in select data types that extend the condition_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
condition_item =
EXTENSIBLE
GENERIC_ENTITY
SELECT;
END_TYPE;
(*
The condition_parameter_item type is an extensible list of alternate data types that allows for the designation of the data type Condition_relationship.
NOTE The list of entity data types may be extended in application modules that use the constructs of this module.
EXPRESS specification:
*)
TYPE
condition_parameter_item =
EXTENSIBLE
GENERIC_ENTITY
SELECT
(Condition_relationship);
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.
NOTE The condition is defined as a text based expression that is represented by the description attribute.
The parameters against which the condition is to be evaluated are identified by Condition_parameter.
The target or consequence of a condition is represented by Condition_assignment.
EXAMPLE "If the engine has been running for 10000 hours then it requires a service" is an example of a conditional statement. The conditional part of the statement is "If the engine has been running for 10000 hours" which is stored in definition attribute on Condition. The parameter or subject of the condition is "the engine" which is represented by a Condition_parameter identifying the Product_as_realized which represents the engine. The consequence of the condition is "then it requires a service". This is represented by Condition_assignment identifying the task to perform the service, a Task_method.
EXPRESS specification:
*)
ENTITY Condition;
name : STRING;
description :
OPTIONAL
STRING;
END_ENTITY;
(*
Attribute definitions:
name: the words by which a Condition is known.
description: the text that provides further information about the Condition. The value of the attribute need not be specified.
EXAMPLE Condition 29 applies to the relationship between a Saab 9.3 car and the activity of checking the oil level on that make of car.
EXPRESS specification:
*)
ENTITY Condition_assignment;
assigned_condition : Condition;
item : condition_item;
END_ENTITY;
(*
Attribute definitions:
assigned_condition: the Condition that is being assigned.
item: the product or activity data to which the Condition is being assigned.
EXAMPLE Oil pressure on gauge 3.
NOTE The product or activity data is defined in condition_parameter_item. The contents of this select type are defined in application modules that use this module.
EXPRESS specification:
*)
ENTITY Condition_parameter;
name : STRING;
description :
OPTIONAL
STRING;
condition : Condition;
parameter :
OPTIONAL
condition_parameter_item;
END_ENTITY;
(*
Attribute definitions:
name: the words by which a Condition_parameter is known.
description: the text that provides further information about the Condition_parameter. The value of the attribute need not be specified.
condition: the Condition for which the parameter is an input.
parameter: the product or activity data which acts as a parameter to the condition. The value of this attribute need not be specified.
NOTE The Condition_relationship normally represents a logical combination of conditions. The logical type is identified by the classification of the Condition_relationship by a Classification_assignment.
EXAMPLE "If the engine has been running for 10000 hours AND the engine is fitted with a clog-up-quick Oil filter then change the oil filter" is an example of two conditions related by a logical AND.
EXPRESS specification:
*)
ENTITY Condition_relationship;
name : STRING;
description :
OPTIONAL
STRING;
relating_condition : Condition;
related_condition : Condition;
END_ENTITY;
(*
Attribute definitions:
name: the words by which the Condition_relationship is known.
description: the text that provides further information about the Condition_relationship. The value of the attribute need not be specified.
relating_condition: one of the instances of Condition that is a part of the relationship.
related_condition: the other instance of Condition that is part of the relationship. If one element of the relationship is dependent upon the other, this attribute shall be the dependent one.
*)
END_SCHEMA; -- Condition_arm
(*
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