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Remove spatial containment and aggregation when nesting

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The nest assign_object API now removes existing spatial containment and
aggregate relationships before creating the nest, matching the behavior
documented in its docstring and consistent with aggregate.assign_object.

Fix #7248

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Dion Moult
2026-03-22 15:26:58 +11:00
parent b8136d4762
commit 75b8d4f218
2 changed files with 26 additions and 1 deletions
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src/ifcopenshell-python/ifcopenshell/api/nest/assign_object.py
+6 -1
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@@ -19,7 +19,9 @@
from typing import Union
import ifcopenshell
import ifcopenshell.api.aggregate
import ifcopenshell.api.owner
import ifcopenshell.api.spatial
import ifcopenshell.guid
import ifcopenshell.util.element
@@ -137,7 +139,10 @@ def assign_object(
if not objects_to_change:
return is_nested_by
# NOTE: An object can both be nested and assigned to a container or an aggregate.
# Can be either only nested, aggregated, or contained at the same time.
possibly_contained = [o for o in objects_without_nests if hasattr(o, "ContainedInStructure")]
ifcopenshell.api.spatial.unassign_container(file, products=possibly_contained)
ifcopenshell.api.aggregate.unassign_object(file, products=objects_without_nests)
# unassign elements from previous nests
for nests in previous_nests_rels: