ISO 10303-41:2021(E)


Integrated generic resource: Fundamentals of product description and support	ISO 10303-41:2021(E) © ISO

Cover page
Table of contents
Copyright
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
3.2 Abbreviated terms
4 Action
4.1 General
4.2 Fundamental concepts and assumptions
4.3 Action type definitions
4.4 Action entity definitions
4.5 Action function definitions
5 Application context
5.1 General
5.2 Fundamental concepts and assumptions
5.3 Application context type definitions
5.4 Application context entity definitions
6 Approval
6.1 General
6.2 Fundamental concepts and assumptions
6.3 Approval type definitions
6.4 Approval entity definitions
6.5 Approval function definitions
7 Basic attribute
7.1 General
7.2 Fundamental concepts and assumptions
7.3 Basic attribute type definitions
7.4 Basic attribute entity definitions
7.5 Basic attribute function definitions
8 Certification
8.1 General
8.2 Fundamental concepts and assumptions
8.3 Certification entity definitions
9 Contract
9.1 General
9.2 Fundamental concepts and assumptions
9.3 Contract entity definitions
9.4 Contract function definitions
10 Date time
10.1 General
10.2 Fundamental concepts and assumptions
10.3 Date time type definitions
10.4 Date time entity definitions
10.5 Date time function definitions

11 Document
11.1 General
11.2 Fundamental concepts and assumptions
11.3 Document type definition
11.4 Document entity definitions
11.5 Document function definitions
12 Effectivity
12.1 General
12.2 Fundamental concepts and assumptions
12.3 Effectivity type definitions
12.4 Effectivity entity definitions
12.5 Effectivity function definitions
13 Experience
13.1 General
13.2 Fundamental concepts and assumptions
13.3 Experience entity definitions
13.4 Experience function definitions
14 External reference
14.1 General
14.2 Fundamental concepts and assumptions
14.3 External reference type definitions
14.4 External reference entity definitions
14.5 External reference function definitions
15 Group
15.1 General
15.2 Fundamental concepts and assumptions
15.3 Group type definition
15.4 Group entity definitions
15.5 Group function definitions
16 Language
16.1 General
16.2 Fundamental concepts and assumptions
16.3 Language entity definition
17 Location
17.1 General
17.2 Fundamental concepts and assumptions
17.3 Location entity definitions
17.4 Location function definitions
18 Management resources
18.1 General
18.2 Fundamental concepts and assumptions
18.3 Management resources type definitions
18.4 Management resources entity definitions
18.5 Management resources function definitions


         (*
ISO/TC 184/SC 4/WG 12 N8369 - ISO 10303-41 Fundamentals of product description and support - EXPRESS
*)




            SCHEMA external_reference_schema;


         REFERENCE FROM 
         basic_attribute_schema   -- ISO 10303-41
  (description_attribute,

           
         description_attribute_select,

           
         get_description_value);


         REFERENCE FROM 
         support_resource_schema   -- ISO 10303-41
  (label,

           
         text,

           
         identifier,

           
         bag_to_set);


TYPE ers_description_attribute_select =
         
         
         SELECT
         BASED_ON
         description_attribute_select
         WITH 
         

            (external_source);

         END_TYPE;


TYPE message =
         STRING;

         END_TYPE;


TYPE source_item =
         
         
         SELECT

            (identifier, 
    message);

         END_TYPE;


ENTITY external_source;

           source_id : source_item;
DERIVE

           description : text := get_description_value(SELF);
WHERE

           WR1: SIZEOF(USEDIN(SELF, 'BASIC_ATTRIBUTE_SCHEMA.' + 'DESCRIPTION_ATTRIBUTE.DESCRIBED_ITEM')) <= 1;

         
         END_ENTITY;


ENTITY external_source_relationship;

           name : label;

           description : 
         OPTIONAL 
         text;

           relating_source : external_source;

           related_source : external_source;

         
         END_ENTITY;


ENTITY externally_defined_item;

           item_id : source_item;

           source : external_source;

         
         END_ENTITY;


ENTITY externally_defined_item_relationship;

           name : label;

           description : 
         OPTIONAL 
         text;

           relating_item : externally_defined_item;

           related_item : externally_defined_item;

         
         END_ENTITY;


ENTITY externally_defined_item_with_multiple_references

           SUBTYPE OF (externally_defined_item);

           references : LIST[1:?] OF 
         UNIQUE
         source_item;
UNIQUE

           UR1: references;
WHERE

           WR1: NOT(SELF\externally_defined_item.item_id IN references);

         
         END_ENTITY;


ENTITY pre_defined_item;

           name : label;

         
         END_ENTITY;


FUNCTION acyclic_external_source_relationship
 (relation : external_source_relationship; relatives : SET[1:?] OF external_source; specific_relation : STRING) : BOOLEAN;

LOCAL
      x : SET OF external_source_relationship;
    END_LOCAL;

    IF relation.relating_source IN relatives THEN
      RETURN (FALSE);
    END_IF;
    x := QUERY(es <* bag_to_set(USEDIN(relation.relating_source, 'EXTERNAL_REFERENCE_SCHEMA.' + 'EXTERNAL_SOURCE_RELATIONSHIP.' + 'RELATED_SOURCE')) | specific_relation IN TYPEOF(es));
    REPEAT i := 1 TO HIINDEX(x);
      IF NOT acyclic_external_source_relationship(x[i], relatives + relation.relating_source, specific_relation) THEN
        RETURN (FALSE);
      END_IF;
    END_REPEAT;
    RETURN (TRUE);


         END_FUNCTION;


FUNCTION acyclic_externally_defined_item_relationship
 (relation : externally_defined_item_relationship; relatives : SET[1:?] OF externally_defined_item; specific_relation : STRING) : BOOLEAN;

LOCAL
      x : SET OF externally_defined_item_relationship;
    END_LOCAL;

    IF relation.relating_item IN relatives THEN
      RETURN (FALSE);
    END_IF;
    x := QUERY(edi <* bag_to_set(USEDIN(relation.relating_item, 'EXTERNAL_REFERENCE_SCHEMA.' + 'EXTERNALLY_DEFINED_ITEM_RELATIONSHIP.' + 'RELATED_ITEM')) | specific_relation IN TYPEOF(edi));
    REPEAT i := 1 TO HIINDEX(x);
      IF NOT acyclic_externally_defined_item_relationship(x[i], relatives + relation.relating_item, specific_relation) THEN
        RETURN (FALSE);
      END_IF;
    END_REPEAT;
    RETURN (TRUE);


         END_FUNCTION;



         END_SCHEMA;  -- external_reference_schema