Bibliothekseintrag | |
Library Reference | |
Référence de bibliothèque |
Item | SPF | XML | Change | Description | IFC2x3 to IFC4 |
---|---|---|---|---|
IfcLibraryReference | ||||
Location | MODIFIED | Type changed from IfcLabel to IfcURIReference. | ||
Identification | X | MODIFIED | Name changed from ItemReference to Identification. | |
Description | ADDED | |||
Language | ADDED | |||
ReferencedLibrary | ADDED |
An IfcLibraryReference is a reference into a library of information by Location (provided as a URI). It also provides an optional inherited Identification key to allow more specific references to library sections or tables. The inherited Name attribute allows for a human interpretable identification of the library item. Also, general information on the library from which the reference is taken, is given by the ReferencedLibrary relation which identifies the relevant occurrence of IfcLibraryInformation.
The ifcLibraryReference additionally provides the capability to handle multilingual library entries. The Language attribute then holds the language tag for the language used by the strings kept in the Name and the Description attribute.
HISTORY New entity in IFC2.0.
IFC4 CHANGE Description and Language attribute added; ReferencedLibrary attribute added (reversing previous ReferenceIntoLibrary inverse relationship).
# | Attribute | Type | Cardinality | Description | C |
---|---|---|---|---|---|
4 | Description | IfcText | [0:1] | Additional description provided for the library reference. | X |
5 | Language | IfcLanguageId | [0:1] | The language in which a library reference is expressed. | X |
6 | ReferencedLibrary | IfcLibraryInformation | [0:1] | The library information that is being referenced. | X |
LibraryRefForObjects | IfcRelAssociatesLibrary @RelatingLibrary | S[0:?] | The library reference with which objects are associated. | X |
# | Attribute | Type | Cardinality | Description | C |
---|---|---|---|---|---|
IfcExternalReference | |||||
1 | Location | IfcURIReference | [0:1] | Location, where the external source (classification, document or library) can be accessed by electronic means. The electronic location is provided as an URI, and would normally be given as an URL location string. | X |
2 | Identification | IfcIdentifier | [0:1] |
The Identification provides a unique identifier of the referenced item within the external source (classification, document or library). It may be provided as
| X |
3 | Name | IfcLabel | [0:1] | Optional name to further specify the reference. It can provide a human readable identifier (which does not necessarily need to have a counterpart in the internal structure of the document). | X |
ExternalReferenceForResources | IfcExternalReferenceRelationship @RelatingReference | S[0:?] | Reference to all associations between this external reference and objects within the IfcResourceObjectSelect that are tagged by the external reference. | X | |
IfcLibraryReference | |||||
4 | Description | IfcText | [0:1] | Additional description provided for the library reference. | X |
5 | Language | IfcLanguageId | [0:1] | The language in which a library reference is expressed. | X |
6 | ReferencedLibrary | IfcLibraryInformation | [0:1] | The library information that is being referenced. | X |
LibraryRefForObjects | IfcRelAssociatesLibrary @RelatingLibrary | S[0:?] | The library reference with which objects are associated. | X |
<xs:element name="IfcLibraryReference" type="ifc:IfcLibraryReference" substitutionGroup="ifc:IfcExternalReference" nillable="true"/>
<xs:complexType name="IfcLibraryReference">
<xs:complexContent>
<xs:extension base="ifc:IfcExternalReference">
<xs:sequence>
<xs:element name="ReferencedLibrary" type="ifc:IfcLibraryInformation" nillable="true" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="Description" type="ifc:IfcText" use="optional"/>
<xs:attribute name="Language" type="ifc:IfcLanguageId" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcLibraryReference
SUBTYPE OF (IfcExternalReference);
Description : OPTIONAL IfcText;
Language : OPTIONAL IfcLanguageId;
ReferencedLibrary : OPTIONAL IfcLibraryInformation;
INVERSE
LibraryRefForObjects : SET [0:?] OF IfcRelAssociatesLibrary FOR RelatingLibrary;
END_ENTITY;