 | Mieter / Nutzer |
 | Occupant |
 | Occupant |
| Item | SPF | XML | Change | Description | IFC2x3 to IFC4 |
|---|---|---|---|---|
| IfcOccupant | ||||
| OwnerHistory | MODIFIED | Instantiation changed to OPTIONAL. | ||
| PredefinedType | MODIFIED | Instantiation changed to OPTIONAL. |
An occupant is a type of actor that defines the form of occupancy of a property.
The principal purpose of IfcOccupant is to determine the nature of occupancy of a property for a particular actor. All characteristics relating to the actor (name and organization details) are inherited from the IfcActor entity.
HISTORY New entity in IFC2x
| # | Attribute | Type | Cardinality | Description | G |
|---|---|---|---|---|---|
| 7 | PredefinedType | IfcOccupantTypeEnum | ? |
Predefined occupant types from which that required may be set.
IFC4 CHANGE Attribute made optional. | X |
| Rule | Description |
|---|---|
| WR31 | The attribute ObjectType must be asserted when the value of the IfcOccupantTypeEnum is set to USERDEFINED. |
| # | 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 |
| IfcObjectDefinition | |||||
| HasAssignments | IfcRelAssigns @RelatedObjects | S[0:?] | Reference to the relationship objects, that assign (by an association relationship) other subtypes of IfcObject to this object instance. Examples are the association to products, processes, controls, resources or groups. | X | |
| Nests | IfcRelNests @RelatedObjects | S[0:1] | References to the decomposition relationship being a nesting. It determines that this object definition is a part within an ordered whole/part decomposition relationship. An object occurrence or type can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE The inverse attribute datatype has been added and separated from Decomposes defined at IfcObjectDefinition. | X | |
| IsNestedBy | IfcRelNests @RelatingObject | S[0:?] | References to the decomposition relationship being a nesting. It determines that this object definition is the whole within an ordered whole/part decomposition relationship. An object or object type can be nested by several other objects (occurrences or types).
IFC4 CHANGE The inverse attribute datatype has been added and separated from IsDecomposedBy defined at IfcObjectDefinition. | X | |
| HasContext | IfcRelDeclares @RelatedDefinitions | S[0:1] | References to the context providing context information such as project unit or representation context. It should only be asserted for the uppermost non-spatial object.
IFC4 CHANGE The inverse attribute datatype has been added. | X | |
| IsDecomposedBy | IfcRelAggregates @RelatingObject | S[0:?] | References to the decomposition relationship being an aggregation. It determines that this object definition is whole within an unordered whole/part decomposition relationship. An object definitions can be aggregated by several other objects (occurrences or parts).
IFC4 CHANGE The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates. | X | |
| Decomposes | IfcRelAggregates @RelatedObjects | S[0:1] | References to the decomposition relationship being an aggregation. It determines that this object definition is a part within an unordered whole/part decomposition relationship. An object definitions can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates. | X | |
| HasAssociations | IfcRelAssociates @RelatedObjects | S[0:?] | Reference to the relationship objects, that associates external references or other resource definitions to the object.. Examples are the association to library, documentation or classification. | X | |
| IfcObject | |||||
| 5 | ObjectType | IfcLabel | ? |
The type denotes a particular type that indicates the object further. The use has to be established at the level of instantiable subtypes. In particular it holds the user defined type, if the enumeration of the attribute PredefinedType is set to USERDEFINED.
| X |
| IsDeclaredBy | IfcRelDefinesByObject @RelatedObjects | S[0:1] | Link to the relationship object pointing to the declaring object that provides the object definitions for this object occurrence. The declaring object has to be part of an object type decomposition. The associated IfcObject, or its subtypes, contains the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE New inverse relationship, change made with upward compatibility for file based exchange. | X | |
| Declares | IfcRelDefinesByObject @RelatingObject | S[0:?] | Link to the relationship object pointing to the reflected object(s) that receives the object definitions. The reflected object has to be part of an object occurrence decomposition. The associated IfcObject, or its subtypes, provides the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE New inverse relationship, change made with upward compatibility for file based exchange. | X | |
| IsTypedBy | IfcRelDefinesByType @RelatedObjects | S[0:1] | Set of relationships to the object type that provides the type definitions for this object occurrence. The then associated IfcTypeObject, or its subtypes, contains the specific information (or type, or style), that is common to all instances of IfcObject, or its subtypes, referring to the same type.
IFC4 CHANGE New inverse relationship, the link to IfcRelDefinesByType had previously be included in the inverse relationship IfcRelDefines. Change made with upward compatibility for file based exchange. | X | |
| IsDefinedBy | IfcRelDefinesByProperties @RelatedObjects | S[0:?] | Set of relationships to property set definitions attached to this object. Those statically or dynamically defined properties contain alphanumeric information content that further defines the object.
IFC4 CHANGE The data type has been changed from IfcRelDefines to IfcRelDefinesByProperties with upward compatibility for file based exchange. | X | |
| IfcActor | |||||
| 6 | TheActor | IfcActorSelect | Information about the actor. | X | |
| IsActingUpon | IfcRelAssignsToActor @RelatingActor | S[0:?] | Reference to the relationship that associates the actor to an object. | X | |
| IfcOccupant | |||||
| 7 | PredefinedType | IfcOccupantTypeEnum | ? |
Predefined occupant types from which that required may be set.
IFC4 CHANGE Attribute made optional. | X |
Actor Assignment
The Actor Assignment concept template applies to this entity as shown in Table 237.
| ||||||||||||||
Table 237 — IfcOccupant Actor Assignment |
Instance diagram
<?xml version="1.0"?>
<ConceptRoot xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" uuid="06f53ad0-8c39-428c-983c-7bf52abe99e7" name="IfcOccupant" status="sample" applicableRootEntity="IfcOccupant">
<Applicability uuid="00000000-0000-0000-0000-000000000000" status="sample">
<Template ref="f35c1dc1-d48a-4f20-8435-459f22ed302f" />
<TemplateRules operator="and" />
</Applicability>
<Concepts>
<Concept uuid="203f6afc-052e-4a7b-a261-b999278e82c6" name="Actor Assignment" status="sample" override="false">
<Template ref="048079c1-74dd-4bd9-b330-479a148d238f" />
<TemplateRules operator="and">
<TemplateRule Description="Indicates the property to be occupied. Particular details of the agreement relating to the occupancy of a property are dealt within the <em>Pset_PropertyAgreement</em> that is defined for the instance of <em>IfcSpatialStructureElement</em>. This means that an occupant may be related to a site, building, building storey or space through the <em>IfcSpatialStructureElement.ElementComposition</em> attribute. For instance, if the property concerned is several office spaces on a building storey, it might be appropriate to reference <em>IfcBuildingStorey.ElementComposition=PARTIAL</em>. Occupants of a property may be considered to be the parties to an agreement. The roles that the occupant may play in respect to an agreement are defined in the <em>IfcOccupantTypeEnum</em> enumeration. If the role is not specified by the predefined contents of this enumeration, the value <em>USERDEFINED</em> may be set and the <em>ObjectType</em> attribute asserted." Parameters="Type[Type]='IfcSpatialStructureElement'" />
</TemplateRules>
</Concept>
</Concepts>
</ConceptRoot>
| # | Concept | Template | Model View |
|---|---|---|---|
| IfcRoot | |||
| Identity | Software Identity | General Usage | |
| Revision Control | Revision Control | General Usage | |
| IfcObjectDefinition | |||
| Classification Association | Classification Association | General Usage | |
| IfcObject | |||
| Object User Identity | Object User Identity | General Usage | |
| Object Predefined Type | Object Predefined Type | General Usage | |
| Object Typing | Object Typing | General Usage | |
| Property Sets with Override | Property Sets with Override | General Usage | |
| IfcActor | |||
| Property Sets for Objects | Property Sets for Objects | General Usage | |
| IfcOccupant | |||
| Actor Assignment | Actor Assignment | General Usage | |
<xs:element name="IfcOccupant" type="ifc:IfcOccupant" substitutionGroup="ifc:IfcActor" nillable="true"/>
<xs:complexType name="IfcOccupant">
<xs:complexContent>
<xs:extension base="ifc:IfcActor">
<xs:attribute name="PredefinedType" type="ifc:IfcOccupantTypeEnum" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcOccupant
SUBTYPE OF (IfcActor);
PredefinedType : OPTIONAL IfcOccupantTypeEnum;
WHERE
WR31 : NOT(PredefinedType = IfcOccupantTypeEnum.USERDEFINED)
OR EXISTS(SELF\IfcObject.ObjectType);
END_ENTITY;
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