I think the solution is fairly simple. Pass the "metadata" fieldname to the QueryTermExtractor - not the fieldname "author". QueryTermExtractor effectively provides just a list of strings (no fieldnames) which are then matched against strings found in the tokenStream which represents your content. Because your query did not contain any "author:apple" clauses QueryTermExtractor produced no strings for highlighting when you asked for the field.
Cheers Mark On 3/2/07, Renaud Waldura <[EMAIL PROTECTED]> wrote: > > Hello Mark: > > I apologize for not responding earlier, more urgent stuff took over. I > really appreciate your help with this. Since my first message was somewhat > terse, let me explain again. > > My index includes both "regular" fields (stored, indexed, tokenized) and > "search-only" fields used for searching only (unstored, indexed, > tokenized). > In particular, I have one such field called "metadata" that's the > accumulation of all metadata about the document (title, authors, date, > etc.). Using this field, I can easily query "all metadata" without > searching > the document text (that's a separate field). It has no meaning other than > making this kind of query possible. > > Say I query "+metadata:apple +banana". I would like to have the term > "apple" > highlighted in all metadata fields; if Fiona Apple authored a document, > her > lastname should be highlighted in the "author" field, but not in the > document text. > > From what I've experienced, when I pass NULL as fieldname to the > QueryTermExtractor, "apple" gets highlighted everywhere, both in any > metadata AND the document text. When I pass "author" as fieldname, it > doesn't highlight that field at all -- because the query was actually for > "metadata" not "author". It's not correct in either case, and I'm not sure > what to do. > > Thanks again for your help, > > --Renaud > > > > > -----Original Message----- > From: markharw00d [mailto:[EMAIL PROTECTED] > Sent: Tuesday, February 13, 2007 3:24 PM > To: java-user@lucene.apache.org > Subject: Re: More Precise Highlighting > > Not sure I fully understand the problem. The query is effectively > "allContent:someTitleText" and you want to highlight the string > "someTitleText" in the title field? > If you pass null as a fieldname to the QueryTermExtractor it will use all > term values, regardless of field, as string to highlight. > If you pass a fieldname it will only select highlight term values for that > field. > If you want, you can use QueryTermExtractor to extract just the > "allContent" > field values and pass a TokenStream for the "title" field to the > highlighter > and it would highlight the appropriate values in the title. > > Do any of these options work? > > > > Renaud Waldura wrote: > > The old highlighter code used to highlight found terms in any field > > (too broad). The new highlighter lets one specify a field when > > highlighting, but it highlights that field only (too narrow). > > > > In my case we have an "all" field that is the concatenation of all > > data about the document. When I highlight e.g. the "title" field, > > nothing happens, because the Highlighter doesn't know the title is > > included in this "all" field. > > > > How can I tell the highlighter that my query fields can map to some > > document fields? It looks like I'd change the QueryTermExtractor, but > > it's conveniently all-static and final. > > > > --Renaud > > > > > > > > > > > > > ___________________________________________________________ > All new Yahoo! Mail "The new Interface is stunning in its simplicity and > ease of use." - PC Magazine http://uk.docs.yahoo.com/nowyoucan.html > > --------------------------------------------------------------------- > 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] > > ___________________________________________________________ New Yahoo! Mail is the ultimate force in competitive emailing. Find out more at the Yahoo! Mail Championships. Plus: play games and win prizes. http://uk.rd.yahoo.com/evt=44106/*http://mail.yahoo.net/uk --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
