Hi Erick et al, >From your answer I understand that this is not a typical case that one searches for a keyword but highlights something else. Since we have two parameters (q vs hl.q) I thought they are freely combinable. From your answer I understand that this is not really the case. My current understanding came from [1] that says:
hl.q A query to use for highlighting. This parameter allows you to highlight different terms than those being used to retrieve documents. what I hear from you is something different: i.e., that this is not enough just to combine the q with hl.q, that there are caveats to achieve the task (multiple fields, FastVectorHighlighter). Your infos are very helpful. Cheers, Arturas [1] https://lucene.apache.org/solr/guide/7_2/highlighting.html On Thu, Mar 22, 2018 at 4:07 PM, Erick Erickson <erickerick...@gmail.com> wrote: > Basically you need to use a copyField, but in several variants: > > If you use the field _exclusively_ for highlighting then store the raw > content there and have the field use whatever analyzer you want. You > do _not_ need to have indexed="true" set for the field if you're > highlighting on the fly. So you're searching against field1 (which has > indexed="true" stored="false" set) but highlighting against field2 > (which has indexed="false" stored="true" set). Of course any time you > want to return the contents in a doc your fl needs to specify > field2... > > The above does not bloat your index at all since the cost of > stored="true" indexed="true" is the same as if you use two fields, > each with only one option turned on. > > The second approach if you want to use FastVectorHighlighter or the > like is simply to index both fields. > > Best, > Erick > > On Thu, Mar 22, 2018 at 2:18 AM, Arturas Mazeika <maze...@gmail.com> > wrote: > > Hi Solr-Users, > > > > I've been playing with a german collection of documents, where I tried to > > search for one word (q=Tag) and highlighted another: (hl.q=Kundigung). Is > > this a "legal" use case? My key question is how can I tell solr which > query > > analyzer to use for highlighting? Strictly speaking, I should use > > hl.q=Kündigung to conceptually look for relevant information, but in this > > case, no highlighting is returned (as all umlauts are left out in the > > index) . > > > > Additional infos: > > > > solr version: 7.2 > > urls to query: > > > > http://localhost:8983/solr/trans/select?q=trans:Zeit&hl= > true&hl.fl=trans&hl.q=Kundigung&hl.snippets=3&wt=xml&rows=1 > > > > http://localhost:8983/solr/trans/select?q=trans:Zeit&hl= > true&hl.fl=trans&hl.q=K%C3%BCndigung&hl.snippets=3&wt=xml&rows=1 > > <http://localhost:8983/solr/trans/select?q=trans:Zeit&hl= > true&hl.fl=trans&hl.q=Kundigung&hl.snippets=3&wt=xml&rows=1> > > > > Managed-schema: > > > > <fieldType name="text_de" class="solr.TextField" > positionIncrementGap="100"> > > <analyzer> > > <tokenizer class="solr.StandardTokenizerFactory"/> > > <filter class="solr.LowerCaseFilterFactory"/> > > <filter class="solr.StopFilterFactory" format="snowball" > > words="lang/stopwords_de.txt" ignoreCase="true"/> > > <filter class="solr.GermanNormalizationFilterFactory"/> > > <filter class="solr.GermanLightStemFilterFactory"/> > > </analyzer> > > </fieldType> > > > > > > Other additional infos: > > https://stackoverflow.com/questions/49276093/solr- > highlighting-terms-with-umlaut-not-found-not-highlighted > > > > Cheers, > > Arturas >
