Re: Highlighting question

[Erik Hatcher]

Is default-search-field stored (as specified in schema.xml)?

        Erik


On Aug 3, 2009, at 8:05 PM, Stephen Green wrote:

Hi, folks.  I'm trying to get a very simple example working with Solr
highlighting.  I have a default search field (called, unsurprisingly
"default-search-field") with text in it and I want query terms to be
highlighted in that field when I do a search.

I'm using an up to date (as of this evening) checkout of 1.4.  My
solrconfig.xml contains the following highlighting element:

   <highlighting>
  <!-- Configure the standard fragmenter -->

<!-- This could most likely be commented out in the "default" case -->

       <fragmenter name="gap"
class="org.apache.solr.highlight.GapFragmenter" default="true">
           <lst name="defaults">
               <int name="hl.fragsize">200</int>
           </lst>
       </fragmenter>

  <!-- A regular-expression-based fragmenter (f.i., for sentence
extraction) -->
       <fragmenter name="regex"
class="org.apache.solr.highlight.RegexFragmenter">
           <lst name="defaults">
     <!-- slightly smaller fragsizes work better because of slop -->
               <int name="hl.fragsize">170</int>
     <!-- allow 50% slop on fragment sizes -->
               <float name="hl.regex.slop">0.5</float>
     <!-- a basic sentence pattern -->

<str name="hl.regex.pattern">[-\w ,/\n\"']{20,200}</ str>

           </lst>
       </fragmenter>

  <!-- Configure the standard formatter -->
       <formatter name="html"
class="org.apache.solr.highlight.HtmlFormatter" default="true">
           <lst name="defaults">
               <str name="hl.simple.pre"><![CDATA[<span class="ht">]]>
               </str>
               <str name="hl.simple.post"><![CDATA[</span>]]>
               </str>
           </lst>
       </formatter>
   </highlighting>

I'm using SolrJ to talk to the Solr server.  Here's the code to do a
query, where qs is the query string.

           SolrQuery q = new SolrQuery(qs);
           q.setQueryType("dismax");
           q.setHighlight(true);
           q.setHighlightFragsize(250);
           q.set("hl.formatter", "html");
           q.set("hl.fragmenter", "regex");
           q.setFields("default-search-field", "key");
           QueryResponse resp = solr.query(q);

I've set up the dismax handler in solrconfig.xml to search the
default-search-field.

The Solr server logs the following request for this:

INFO: [] webapp=/solr path=/select

params={hl.fragsize=250&fl=default-search- field ,key &hl .fragmenter = regex &q=garbage&hl.formatter=html&qt=dismax&wt=javabin&hl=true&version=1}

hits=953 status=0 QTime=39

which looks about right to me, but I don't see any highlighting in the results.

I'm clearly missing something pretty fundamental here, and any help
would be appreciated.

Steve Green