ifcopenshell.api.library.add_reference

Module Contents

ifcopenshell.api.library.add_reference.add_reference(file: ifcopenshell.file, library: ifcopenshell.entity_instance) → ifcopenshell.entity_instance

Adds a new reference to a library

A library represents an external data source, such as a database, spreadsheet, API, or something else that contains information related to the IFC project. Within a library, there will be one or more references, such as reference to a particular table or row in a database, or a sheet and row or column in a spreadsheet, a URI in a linked data Brickschema file, 32-bit decimal BACnetObjectIdentifier in a BACnet system, IP address in a network, and so on.

These references can then be related to IFC elements. You cannot relate an IFC element directly to a library, it must be related to one of the library’s references.

Parameters:

library (ifcopenshell.entity_instance) – The IfcLibraryInformation element to add a reference to

Returns:

The newly created IfcLibraryReference element

Return type:

ifcopenshell.entity_instance

Example:

library = ifcopenshell.api.library.add_library(model, name="Brickschema")

# Let's create a reference to a single AHU in our Brickschema dataset
reference = ifcopenshell.api.library.add_reference(model, library=library)
ifcopenshell.api.library.edit_reference(model,
    reference=reference, attributes={"Identification": "http://example.org/digitaltwin#AHU01"})