Wildcard query search

[Narayanan, Karthikeyan]

Hi,
       I am trying to perform wildcard search using q query.  The query results 
are returned.  After getting the results, I trying to get the highlighting 
using ressponse.getHighlighting().
It returns empty list. But It works fine for non-wildcard searches.  Any ideas 
please?.

Thanks.
                                                              
Karthik