- allow to pass empty parameters and do not die in such momemnt,

   fallback to reasonable defaults


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@43779 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/Vifib/Tool/SlapTool.py

@@ -556,10 +556,20 @@ class SlapTool(BaseTool):
 
     In any other case returns not important data and HTTP code is 403 Forbidden
     """
+    if shared_xml:
       shared = xml_marshaller.xml_marshaller.loads(shared_xml)
+    else:
+      shared = False
+    if partition_parameter_xml:
       partition_parameter_kw = xml_marshaller.xml_marshaller.loads(
                                               partition_parameter_xml)
+    else:
+      partition_parameter_kw = dict()
+    if filter_xml:
       filter_kw = xml_marshaller.xml_marshaller.loads(filter_xml)
+    else:
+      filter_kw = dict()
+      
     instance = etree.Element('instance')
     for parameter_id, parameter_value in partition_parameter_kw.iteritems():
       # cast everything to string