Hi Simon, The problem is the xchanged consumer/producer role. Once the TokenStream calls clearAttributes() the attributes are gone, but query parser can only set the attribute *before* calling incrementToken(), so you have no chance to get them, as Tokenizer cleared it before any filter can read it (unless we use an attribute with clear() a no-op, which would fail lots of tests, as it's a hack).
Uwe ----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: [email protected] > -----Original Message----- > From: Simon Willnauer [mailto:[email protected]] > Sent: Wednesday, October 26, 2011 9:21 AM > To: [email protected] > Subject: Re: accessing the query string from inside TokenFilter > > What Uwe says is correct though. What we possibly could do is adding a > queryattribute that is set in a query parser (you can do that yourself > though). > not sure if it is worth it and if we should do it. > > simon > > On Wed, Oct 26, 2011 at 8:58 AM, Uwe Schindler <[email protected]> wrote: > > Hi, > > > > QueryParser and TokenStreams are clearly separated, there is no way to > > get the query string from inside a TokenStream (and there cannot be, > > because QP is a consumer of the TS, which is used not only for query > > parsing). The only chance you have is to use a ThreadLocal that you > > set before the query is parsed and then use it in the TokenFilter. > > > > Uwe > > > > ----- > > Uwe Schindler > > H.-H.-Meier-Allee 63, D-28213 Bremen > > http://www.thetaphi.de > > eMail: [email protected] > > > > > >> -----Original Message----- > >> From: Bernd Fehling [mailto:[email protected]] > >> Sent: Wednesday, October 26, 2011 8:33 AM > >> To: [email protected] > >> Subject: accessing the query string from inside TokenFilter > >> > >> Dear list, > >> while writing some TokenFilter for my analyzer chain I need access to > >> the > > query > >> string from inside of my TokenFilter for some comparison, but the > >> Filters > > are > >> working with a TokenStream and get seperate Tokens. > >> Currently I couldn't get any access to the query string. > >> > >> It would be great to have such a funtionality in lucene/solr. > >> > >> Should I write a jira issue for it or is there somewhere a wish list? > >> > >> Best regards > >> Bernd > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: [email protected] For > >> additional commands, e-mail: [email protected] > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [email protected] For > > additional commands, e-mail: [email protected] > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] For additional > commands, e-mail: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
