 | Verbindet Elemente - Relation |
 | Rel Connects Elements |
 | Connection d'éléments |
| Item | SPF | XML | Change | Description | IFC2x3 to IFC4 4.0.0.0 |
|---|---|---|---|---|
| IfcRelConnectsElements | ||||
| OwnerHistory | MODIFIED | Instantiation changed to OPTIONAL. |
The IfcRelConnectsElements objectified relationship provides the generalization of the connectivity between elements. It is a 1 to 1 relationship. The concept of two elements being physically or logically connected is described independently from the connecting elements. The connectivity may be related to the shape representation of the connected entities by providing a connection geometry.
HISTORY New entity in IFC1.0.
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| 5 | ConnectionGeometry | IfcConnectionGeometry | ? | The geometric shape representation of the connection geometry that is provided in the object coordinate system of the RelatingElement (mandatory) and in the object coordinate system of the RelatedElement (optionally). | X |
| 6 | RelatingElement | IfcElement | Reference to a subtype of IfcElement that is connected by the connection relationship in the role of RelatingElement. | X | |
| 7 | RelatedElement | IfcElement | Reference to a subtype of IfcElement that is connected by the connection relationship in the role of RelatedElement. | X |
| Rule | Description |
|---|---|
| NoSelfReference | The instance of the RelatingElement shall not be the same instance as the RelatedElement. |
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| IfcRoot | |||||
| 1 | GlobalId | IfcGloballyUniqueId | Assignment of a globally unique identifier within the entire software world. | X | |
| 2 | OwnerHistory | IfcOwnerHistory | ? |
Assignment 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. | X |
| 3 | Name | 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. | X |
| 4 | Description | IfcText | ? | Optional description, provided for exchanging informative comments. | X |
| IfcRelationship | |||||
| IfcRelConnects | |||||
| IfcRelConnectsElements | |||||
| 5 | ConnectionGeometry | IfcConnectionGeometry | ? | The geometric shape representation of the connection geometry that is provided in the object coordinate system of the RelatingElement (mandatory) and in the object coordinate system of the RelatedElement (optionally). | X |
| 6 | RelatingElement | IfcElement | Reference to a subtype of IfcElement that is connected by the connection relationship in the role of RelatingElement. | X | |
| 7 | RelatedElement | IfcElement | Reference to a subtype of IfcElement that is connected by the connection relationship in the role of RelatedElement. | X | |
| # | Concept | Template | Model View |
|---|---|---|---|
| IfcRoot | |||
| Identity | Software Identity | General Usage | |
| Revision Control | Revision Control | General Usage | |
<xs:element name="IfcRelConnectsElements" type="ifc:IfcRelConnectsElements" substitutionGroup="ifc:IfcRelConnects" nillable="true"/>
<xs:complexType name="IfcRelConnectsElements">
<xs:complexContent>
<xs:extension base="ifc:IfcRelConnects">
<xs:sequence>
<xs:element name="ConnectionGeometry" type="ifc:IfcConnectionGeometry" nillable="true" minOccurs="0"/>
<xs:element name="RelatingElement" type="ifc:IfcElement" nillable="true"/>
<xs:element name="RelatedElement" type="ifc:IfcElement" nillable="true"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcRelConnectsElements
SUPERTYPE OF(ONEOF(IfcRelConnectsPathElements, IfcRelConnectsWithRealizingElements))
SUBTYPE OF (IfcRelConnects);
ConnectionGeometry : OPTIONAL IfcConnectionGeometry;
RelatingElement : IfcElement;
RelatedElement : IfcElement;
WHERE
NoSelfReference : RelatingElement :<>: RelatedElement;
END_ENTITY;
References: IfcElement
EXPRESS-G diagram
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