Removing an organisation now properly handles references appropriately.

src/ifcopenshell-python/ifcopenshell/api/owner/remove_application.py

@@ -0,0 +1,12 @@
+import ifcopenshell.api
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"application": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        self.file.remove(self.settings["application"])

src/ifcopenshell-python/ifcopenshell/api/owner/remove_organisation.py

@@ -1,3 +1,6 @@
+import ifcopenshell.api
+
+
 class Usecase:
     def __init__(self, file, **settings):
         self.file = file
@@ -6,4 +9,29 @@ class Usecase:
             self.settings[key] = value
 
     def execute(self):
+        for role in self.settings["organisation"].Roles or []:
+            if len(self.file.get_inverse(role)) == 1:
+                ifcopenshell.api.run("owner.remove_role", self.file, role=role)
+        for address in self.settings["organisation"].Addresses or []:
+            if len(self.file.get_inverse(address)) == 1:
+                ifcopenshell.api.run("owner.remove_address", self.file, address=address)
+        for inverse in self.file.get_inverse(self.settings["organisation"]):
+            if inverse.is_a("IfcOrganizationRelationship"):
+                if inverse.RelatingOrganization == self.settings["organisation"]:
+                    self.file.remove(inverse)
+                elif inverse.RelatedOrganizations == (self.settings["organisation"],):
+                    self.file.remove(inverse)
+            elif inverse.is_a("IfcDocumentInformation"):
+                if inverse.Editors == (self.settings["organisation"],):
+                    inverse.Editors = None
+            elif inverse.is_a("IfcPersonAndOrganization"):
+                ifcopenshell.api.run("owner.remove_person_and_organisation", self.file, person_and_organisation=inverse)
+            elif inverse.is_a("IfcActor"):
+                ifcopenshell.api.run("owner.remove_actor", self.file, actor=inverse)
+            elif inverse.is_a("IfcResourceLevelRelationship") and not inverse.is_a("IfcOrganizationRelationship"):
+                if inverse.RelatedResourceObjects == (self.settings["organisation"],):
+                    self.file.remove(inverse)
+            elif inverse.is_a("IfcApplication"):
+                ifcopenshell.api.run("owner.remove_application", self.file, application=inverse)
+
         self.file.remove(self.settings["organisation"])