Workaround for "repeated data sets" bug.

bt5/erp5_wendelin_telecom_ingestion/SkinTemplateItem/portal_skins/erp5_wendelin_telecom/getDataStreamList.py

 portal = context.getPortalObject()
 portal_catalog = portal.portal_catalog
 
-data_set = portal_catalog.getResultValue(
-           portal_type = "Data Set",
-           reference = data_set_reference)
+#data_set = portal_catalog.getResultValue(
+#           portal_type = "Data Set",
+#           reference = data_set_reference)
+#if data_set is None:
+#  return []
 
-if data_set is None:
+################################ workaround for "multiple-datasets" bug ################################
+query_dict = {
+  "portal_type": "Data Set",
+  "reference" : data_set_reference}
+data_set_list = portal_catalog(**query_dict)
+if len(data_set_list) == 0:
   return []
 
+def belongsToDatasets(line):
+  for data_set in data_set_list:
+    if line.getAggregateDeviceConfiguration() == "data_set_module/" + str(data_set.getId()):
+      return True
+  return False
+################################ workaround for "multiple-datasets" bug ################################
+
 query_dict = {
   "portal_type": "Data Ingestion Line",
   "resource_portal_type": "Data Product",
@@ -16,7 +30,8 @@ query_dict = {
 data_stream_list = []
 
 for line in portal_catalog(**query_dict):
-  if line.getAggregateDeviceConfiguration() == "data_set_module/" + str(data_set.getId()):
+  if belongsToDatasets(line):
+  #if line.getAggregateDeviceConfiguration() == "data_set_module/" + str(data_set.getId()):
     for item in line.getAggregateSet():
       if "data_stream_module/" in item:
         data_stream = context.restrictedTraverse(item)