IFC 4.3.x development

5.1.3.33 IfcRelAssociatesLibrary

5.1.3.33.1 Semantic definitions at the entity

The objectified relationship (IfcRelAssociatesLibrary) handles the assignment of a library item (items of the select IfcLibrarySelect) to subtypes of IfcObjectDefinition or IfcPropertyDefinition.

The relationship is used to assign a library reference or a more detailed link to a library information to objects, property sets or types. A single library reference can be applied to multiple items.

The inherited attribute RelatedObjects define the items to which the library association is applied. The attribute RelatingLibrary is the reference to a library reference, applied to the item(s).

HISTORY  New entity in IFC2x.

5.1.3.33.1 Attributes

#Attribute Type Description
IfcRoot
1GlobalId IfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world.
2OwnerHistory OPTIONAL 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.
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
IfcRelAssociates
5RelatedObjects SET [1:?] OF IfcDefinitionSelectSet of object or property definitions to which the external references or information is associated. It includes object and type objects, property set templates, property templates and property sets and contexts.

> IFC4 CHANGE  The attribute datatype has been changed from IfcRoot to IfcDefinitionSelect.
IfcRelAssociatesLibrary
6RelatingLibraryIfcLibrarySelect Reference to a library, from which the definition of the property set is taken.

5.1.3.33.2 Entity inheritance

dot_inheritance IfcRelAssociatesLibrary IfcRelAssociatesLibrary IfcRelAssociates IfcRelAssociates IfcRelAssociatesLibrary->IfcRelAssociates IfcRelAssociates_children 6 more... IfcRelAssociates_children->IfcRelAssociates IfcRelationship IfcRelationship IfcRelAssociates->IfcRelationship IfcRelationship_children 5 more... IfcRelationship_children->IfcRelationship IfcRoot IfcRoot IfcRelationship->IfcRoot IfcObjectDefinition IfcObjectDefinition IfcObjectDefinition->IfcRoot IfcPropertyDefinition IfcPropertyDefinition IfcPropertyDefinition->IfcRoot

5.1.3.33.3 Definitions applying to General Usage

5.1.3.33.3.1 Identity

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

5.1.3.33.3.2 Revision Control

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

5.1.3.33.4 Formal representations

ENTITY IfcRelAssociatesLibrary
 SUBTYPE OF (IfcRelAssociates);
	RelatingLibrary : IfcLibrarySelect;
END_ENTITY;