Have you looked at Filters? Essentially, you construct a bitmap where each bit corresponds to a document and pass that along into your search. Constructing a filter is surprisingly speedy.
What you lose is relevancy for the filtered part of the query. See ConstantScoreQuery. Also, search the mail archive for wildcard and you'll find a wealth of information. See the thread "I just don't get wildcards at all" for some very worthwhile discussion. Best Erick On Dec 7, 2007 6:33 AM, d33mb33 <[EMAIL PROTECTED]> wrote: > > I have developed a fuzzy search application over a database of books > (titles, > authors etc) and it works really well. (I use Lucene.Net but read the > JavaDocs and forums for java Lucene) > > However I've got an interesting use case with "TooManyClauses" and need > some > help in solving it. > > My users accept that silly title queries like "m*" are going to return too > many results to be useful but they want to combine the wildcard searches > with other search terms. > > For example: > > Use Case 1 > A user wants to search for books by "Charles Dickens" > This works fine using a term query and about 500 results are returned > > Use Case 2 > A user wants to search for books by "Charles Dickens" where the title > starts > with M > This throws a TooManyClauses exceptions (or eats a huge amount of RAM) > because, I guess, Lucene treats the two as independent queries and M* is > expanded across the whole index and not just the books by Charles Dickens. > User's don't understand why the Use Case 1 works but Use Case 2 doesn't. > Use Case 2 as actually being a more restrictive query and will return > better > results than Use Case 1. > > I've thought a bit about how to solve this but none of them seem very > elegant or efficient. > One solution could be too eliminate one or two character wildcards from > the > inital search and then loop through the results doing a String.contains or > something horrible. > Another solution could be through clever use of the QueryFilter classes > but > I don't quite understand how they work yet. > > Any suggestions would be welcome > > -- > View this message in context: > http://www.nabble.com/Post-processing-to-get-around-TooManyClauses--tf4961564.html#a14210833 > Sent from the Lucene - Java Users mailing list archive at Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > >
