Raise exception if it can not find in preferences filename re expression pattern.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@14588 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Tool/ContributionTool.py

@@ -318,6 +318,9 @@ class ContributionTool(BaseTool):
       return {}
     property_dict = {}
     rx_src = self.portal_preferences.getPreferredDocumentFileNameRegularExpression()
+    if rx_src in ('', None):
+      # we must have file name regular expression defined in preferences
+      raise ValueError, '[DMS] No file name regular expression defined in preferences.'
     if rx_src:
       rx_parse = re.compile(rx_src)
       if rx_parse is not None: