IFC 4.3.x development

5.4.3.47 IfcRelConnectsPorts

Change log

IFC4

additionswhere_rulesNoSelfReference

5.4.3.47.1 Semantic definitions at the entity

An IfcRelConnectsPorts relationship defines the relationship that is made between two ports at their point of connection. It may include the connection geometry between two ports.

The objectified relationship IfcRelConnectsPorts is required for defining how two instances of IfcPort connect together. Each of the ports is logically contained within the IfcDistributionElement by using the ordered collection IfcRelNests.

HISTORY  New entity in IFC2.0, modified in IFC2x.

IFC4 CHANGE  Previously the containment of the IfcPort within the IfcDistributionElement had been realized using the IfcRelConnectsPortToElement relationship.

5.4.3.47.1 Attributes

#Attribute Type Description
IfcRoot
1GlobalId IfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world.
2OwnerHistory OPTIONAL IfcOwnerHistoryAssignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,

> NOTE  only the last modification in stored - either as addition, deletion or modification.

> IFC4 CHANGE  The attribute has been changed to be OPTIONAL.
3Name OPTIONAL IfcLabel Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule.
4Description OPTIONAL IfcText Optional description, provided for exchanging informative comments.
IfcRelationship
IfcRelConnects
IfcRelConnectsPorts
5RelatingPort IfcPort Reference to the first port that is connected by the objectified relationship.
6RelatedPort IfcPort Reference to the second port that is connected by the objectified relationship.
7RealizingElementOPTIONAL IfcElement Defines the element that realizes a port connection relationship.

5.4.3.47.2 Entity inheritance

dot_inheritance IfcRelConnectsPorts IfcRelConnectsPorts IfcRelConnects IfcRelConnects IfcRelConnectsPorts->IfcRelConnects IfcRelConnects_children 15 more... IfcRelConnects_children->IfcRelConnects IfcRelationship IfcRelationship IfcRelConnects->IfcRelationship IfcRelationship_children 5 more... IfcRelationship_children->IfcRelationship IfcRoot IfcRoot IfcRelationship->IfcRoot IfcObjectDefinition IfcObjectDefinition IfcObjectDefinition->IfcRoot IfcPropertyDefinition IfcPropertyDefinition IfcPropertyDefinition->IfcRoot

5.4.3.47.3 Definitions applying to General Usage

5.4.3.47.3.1 Identity

IfcRoot assigns the globally unique ID. In addition it may provide for a name and a description about the concept.

5.4.3.47.3.2 Revision Control

Ownership, history, and merge state is captured using IfcOwnerHistory.

5.4.3.47.4 Formal representations

ENTITY IfcRelConnectsPorts
 SUBTYPE OF (IfcRelConnects);
	RelatingPort : IfcPort;
	RelatedPort : IfcPort;
	RealizingElement : OPTIONAL IfcElement;
 WHERE
	NoSelfReference : RelatingPort :<>: RelatedPort;
END_ENTITY;