Thanks Erick. I see, the problem is that I use some fields tokenized and other untokenized but that all the queries are parsed using my analyzer. Is this correct?
I suppose that removing the blanks from learningResourceType before adding it as an untokenized field helps (provided that I do the same operation at query time). Or are there more efficient ways to deal with the problem? Cheers, David On Tue, Sep 30, 2008 at 3:51 PM, Erick Erickson <[EMAIL PROTECTED]>wrote: > What *analyzer* are you using for your queries? Have Luke explain > your queries and I suspect you'll see your problem. Which if you're > using StandardAnalyzer is probably that 'case study' > will look like (lrt:case lrt:study). Note that the implied operator is OR > unless > you've changed it. But these are compared against your tokens > > application > > assessment > > broadcast > > case study > > course > > demonstration > > drill and practice > > educational game > > EACH OF WHICH IS A TOKEN. No indexed value matches > "case" (the closest is "case study", but it doesn't match, since > you indexed it UN_TOKENIZED, "case" != "case study") > and similarly for "study". > > If this is completely off base, perhaps you can provide some additional > detail. > > Best > Erick > > On Tue, Sep 30, 2008 at 9:24 AM, David Massart <[EMAIL PROTECTED]> wrote: > > > Hi all, > > Here is a new newbee question. > > > > I'm adding to a lucene index, documents containing a field lrt created as > > follows: > > > > doc.add( new Field( "lrt", learningResourceType > > > > .toLowerCase(), Field.Store.NO, > > > > Field.Index.UN_TOKENIZED ) ) ; > > > > > > where possible values for learningResourceType are: > > > > > > application > > > > assessment > > > > broadcast > > > > case study > > > > course > > > > demonstration > > > > drill and practice > > > > educational game > > > > > > In this index, searching for a string that doesn't contain a blank > > character > > works fine > > > > > > for example, lrt: application > > > > > > but searching for a string with a blank does not return any results: > > > > > > for example, lrt: case study doesn't work > > > > > > Using lukeall, I can successfully query my index by escaping the blank > with > > a backslash > > > > > > for example, lrt: case\ study > > > > > > But it doesn't work when I try to do the same thing in Java > > > > > > String query = "lrt: case\\ study" > > > > > > doesn't return any result. > > > > > > I've also try to QueryParser.escape( "case study") but it doesn't seem to > > affect blank characters? > > > > > > Thanks for your help. > > > > > > David > > >
