IFC 5 and Guid format

1

I’m looking at the ifc 5 master and I noticed that the guid format is changed from 22 characters to 32, but this way I don’t lose the references to the objects stored with the old format?

2

Not an expert on GUIDs, but you can go from the IFC’s 22 char to the IFC5 UUID v5.

For example, using IfcOpenShell in Python:

import ifcopenshell.guid
import uuid

compressed = "0kZ8R2mP8DzeP94rYQk$h2"
hex_str = ifcopenshell.guid.expand(compressed)
as_uuid = uuid.UUID(hex_str)

print(as_uuid)
# → 2e8c86c2-c192-0df6-8649-13589abbfac2