Modify bang in order to bang the tree from root instance.

master/bt5/vifib_base/WorkflowTemplateItem/portal_workflow/software_instance_slap_interface_workflow/scripts/SoftwareInstance_bangSoftwareInstanceTree.xml

@@ -53,15 +53,18 @@
             <value> <string>software_instance = state_change[\'object\']\n
 portal = context.getPortalObject()\n
 \n
-root_software_instance = software_instance\n
-while (software_instance is not None):\n
-  root_software_instance = software_instance\n
-  software_instance = software_instance.getPredecessorRelatedValue()\n
+root_hosting_subscription = portal.portal_catalog.getResultValue(uid=context.SoftwareInstance_getRootHostingSubscriptionUid)\n
+root_software_instance = root_hosting_subscription.HostingSubscription_requestRootSoftwareInstance()\n
 \n
-for software_instance in context.portal_catalog(\n
-  portal_type=\'Software Instance\',\n
-  root_uid=root_software_instance.getUid()):\n
-  software_instance = software_instance.getObject()\n
+# Use iterative algorithm instead of recursive approach in order to avoid\n
+# complexity as much as possible.\n
+flat_tree = [root_software_instance]\n
+while True:\n
+  try:\n
+    software_instance = flat_tree.pop(0)\n
+  except:\n
+    break\n
+  flat_tree.extend(software_instance.getPredecessorValueList())\n
   try:\n
     software_instance.Item_getInstancePackingListLine(service_relative_url=portal.portal_preferences.getPreferredInstanceCleanupResource())\n
   except ValueError:\n

master/bt5/vifib_base/bt/revision

-328
\ No newline at end of file
+329
\ No newline at end of file