data_type should be nodeid and not an int

schemas/generate_protocol_python.py

@@ -118,7 +118,7 @@ class CodeGenerator:
         self.write('')
         #FIXME: next line is a weak way to find out if object is a datatype or not...
         if not "Parameter" in obj.name and not "Result" in obj.name:
-            self.write(f'data_type = ObjectIds.{obj.name}')
+            self.write(f'data_type = NodeId(ObjectIds.{obj.name})')
             self.write('')
         switch_written = False
         for field in obj.fields:

tests/test_common.py

@@ -1007,3 +1007,10 @@ async def test_import_xml_data_type_definition(opc):
 
     s2 = await var.read_value()
     assert s2.structs[1].toto == ss.structs[1].toto == 0.1
+
+
+async def test_struct_data_type(opc):
+    assert isinstance(ua.AddNodesItem.data_type, ua.NodeId)
+    node = opc.opc.get_node(ua.AddNodesItem.data_type)
+    path = await node.get_path()
+    assert opc.opc.nodes.base_structure_type in path