Thanks Anshum and Eric. Well, I was looking for something like searching by domain name in the email address etc. How can I reverse the tokens? Can you please explain in little detail?
Thanks, Aditi On Thu, Oct 30, 2008 at 10:58 AM, Anshum <[EMAIL PROTECTED]> wrote: > Hi Aditi, > As Eric mentioned, we'd need to know more to provide a rather apt solution. > At the same time, a prefix wildcard is a highly unoptimized thing for > lucene > because of the way the index is stored/read. Ideally you'd atleast want to > reverse the tokens as already mentioned. > This is because the index terms are lexically sorted while storing and so > the seem/fetch is efficient under normal cases(and not under the case of a > prefix wildcard). > > -- > Anshum Gupta > Naukri Labs! > http://ai-cafe.blogspot.com > > The facts expressed here belong to everybody, the opinions to me. The > distinction is yours to draw............ > > > On Wed, Oct 29, 2008 at 6:04 PM, Erick Erickson <[EMAIL PROTECTED] > >wrote: > > > Sure, there are many tricks. If you search the mail archives you'll > > find a bunch of them. > > > > One would be to reverse the tokens and make your leading > > wildcard queries into trailing ones on the reversed field. > > > > But without more details about what you're trying to accomplish, > > there's not much really useful advice we can offer. > > > > Best > > Erick > > > > On Wed, Oct 29, 2008 at 7:15 AM, Aditi Goyal <[EMAIL PROTECTED]> > > wrote: > > > > > Hi All, > > > > > > I have been wanting to do a wildcard search with * as a first letter on > > an > > > index. > > > Is there a way out except for setAllowLeadingWildcard() of QueryParser > to > > > true? Because, i have heard it is an expensive operation. > > > > > > Thanks > > > Aditi > > > > > >
