Inherited definitions from supertypes
Entity inheritance
Attribute inheritance
| # | Attribute | Type | Cardinality | Description | A |
|---|---|---|---|---|---|
| IfcRoot | |||||
| 1 | GlobalId | IfcGloballyUniqueId | [1:1] | Assignment of a globally unique identifier within the entire software world. | X |
| 2 | OwnerHistory | IfcOwnerHistory | [1:1] | 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. | X |
| 3 | Name | IfcLabel | [0:1] | 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 | [0:1] | Optional description, provided for exchanging informative comments. | X |
| IfcObjectDefinition | |||||
| IsDecomposedBy | IfcRelDecomposes @RelatingObject | S[0:?] | Reference to the decomposition relationship, that allows this object to be the composition of other objects. An object can be decomposed by several other objects. | X | |
| Decomposes | IfcRelDecomposes @RelatedObjects | S[0:1] | References to the decomposition relationship, that allows this object to be a part of the decomposition. An object can only be part of a single decomposition (to allow hierarchical strutures only). | 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 | [0:1] |
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 |
| IsDefinedBy | IfcRelDefines @RelatedObjects | S[0:?] |
Set of relationships to type or property (statically or dynamically defined) information that further define the object. In case of type information, the associated IfcTypeObject contains the specific information (or type, or style), that is common to all instances of IfcObject referring to the same type.
| X | |
| IfcProject | |||||
| 6 | LongName | - | This attribute is out of scope for this model view definition and shall not be set. | ||
| 7 | Phase | - | This attribute is out of scope for this model view definition and shall not be set. | ||
| 8 | RepresentationContexts | IfcRepresentationContext | S[1:?] | Context of the representations used within the project. When the project includes shape representations for its components, one or several geometric representation contexts need to be included that define e.g. the world coordinate system, the coordinate space dimensions, and/or the precision factor. | X |
| 9 | UnitsInContext | IfcUnitAssignment | [1:1] | Units globally assigned to measure types used within the context of this project. | X |
Definitions applying to AISC Model View
Instance diagramConcept usage
Project Representation Context
The Project Representation Context concept applies to this entity.
| Exchange |  |
|---|---|
| Import | R |
| Export | R |
SI Units
The SI Units concept applies to this entity.
| Exchange | |
|---|---|
| Import | O |
| Export | O |
Conversion Units
The Conversion Units concept applies to this entity.
| Exchange | |
|---|---|
| Import | O |
| Export | O |
Derived Units
The Derived Units concept applies to this entity.
| Exchange | |
|---|---|
| Import | O |
| Export | O |
Concept inheritance
| # | Concept | Model View |
|---|---|---|
| IfcProject | ||
| Project Representation Context | AISC Model View | |
| SI Units | AISC Model View | |
| Conversion Units | AISC Model View | |
| Derived Units | AISC Model View | |
Formal representations
XSD Specification
<xs:element name="IfcProject" type="ifc:IfcProject" substitutionGroup="ifc:IfcObject" nillable="true"/>
<xs:complexType name="IfcProject">
<xs:complexContent>
<xs:extension base="ifc:IfcObject">
<xs:sequence>
<xs:element name="RepresentationContexts">
<xs:complexType>
<xs:sequence>
<xs:element ref="ifc:IfcRepresentationContext" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute ref="ifc:itemType" fixed="ifc:IfcRepresentationContext"/>
<xs:attribute ref="ifc:cType" fixed="set"/>
<xs:attribute ref="ifc:arraySize" use="optional"/>
</xs:complexType>
</xs:element>
<xs:element name="UnitsInContext" type="ifc:IfcUnitAssignment" nillable="true"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
EXPRESS Specification
ENTITY IfcProject
SUBTYPE OF (IfcObject);
LongName : OPTIONAL IfcStrippedOptional;
Phase : OPTIONAL IfcStrippedOptional;
RepresentationContexts : SET [1:?] OF IfcRepresentationContext;
UnitsInContext : IfcUnitAssignment;
WHERE
WR31 : EXISTS(SELF\IfcRoot.Name);
WR32 : SIZEOF(QUERY(Temp <* RepresentationContexts |
'IFCREPRESENTATIONRESOURCE.IFCGEOMETRICREPRESENTATIONSUBCONTEXT' IN TYPEOF(Temp)
)) = 0 ;
WR33 : SIZEOF(SELF\IfcObjectDefinition.Decomposes) = 0;
END_ENTITY;
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