You could form a filter, using the WildCardTermEnum or RegExTermEnum and then use the filter with a ConstantScoreQuery. You lose relevancy, but relevancy is an ambiguous concept with wildcards anyway.
Using the query parser with a leading wildcard, even if enabled, is almost sure to give you a "TooManyClauses" exception unless your index is very, very, very small. There's a thread I started on the list titled "I just don't get wildcards at all" in which the guys generously gave me a tutorial in what wildcards are all about. I suspect you'd find it interesting..... You might also want to search the archive for any TooManyClauses since this has been discussed several times..... Best Erick
