wildcard search issue

[mahendra mahendra]

Hi,
 
The case sensitive wild-card search is not working for TextField type.
I have tried searching for UserName:cust*, it gave the results, but 
UserName:Cust* didn't give any results. How can I make it work..
I have defined my TextField in following way.
 
 <fieldtype name="textTight" class="solr.TextField" positionIncrementGap="100">
      <analyzer type="index">
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <filter class="solr.LowerCaseFilterFactory"/>
      </analyzer>
      <analyzer type="query">
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <filter class="solr.LowerCaseFilterFactory"/>
      </analyzer>
</fieldtype> 
  
Any help would appreciate!!

Thanks & Regards,
Mahendra