General object nesting indicates an ordered arrangement relationship.
Figure 35 illustrates an instance diagram.
Figure 35 — Object Nesting |
<?xml version="1.0"?>
<ConceptTemplate xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" uuid="38ca8788-5e47-411c-8294-d56f9e9a5691" name="Object Nesting" applicableSchema="IFC4" applicableEntity="IfcObjectDefinition">
<Rules>
<AttributeRule AttributeName="IsNestedBy">
<EntityRules>
<EntityRule EntityName="IfcRelNests">
<AttributeRules>
<AttributeRule RuleID="Type" AttributeName="RelatedObjects">
<EntityRules>
<EntityRule EntityName="IfcObject" />
</EntityRules>
</AttributeRule>
</AttributeRules>
</EntityRule>
</EntityRules>
</AttributeRule>
</Rules>
</ConceptTemplate>