Highlighting only the entire phrase in custom Solr Query builder in Java

Question

I'm trying to let Solr highlight only the entire phrase and not every word of the query. Supposing stopwords aren't a problem, my query phrase is: "hello darkness my old friend" and the highlighted result will be: "hello darkness my old friend. hello there.". What is the Java code to have this result? "hello darkness my old friend. hello there."?

Here is your minimum replicable example:

import org.apache.solr.client.solrj.SolrQuery;

String query = "hello darkness my old friend";
SolrQuery q = new SolrQuery(query);
q.setHighlightSimplePre("<em>");
q.setHighlightSimplePost("</em>");
String[] queryArray = query.split(" ");

I have already tried with:

q.setHighlightFragsize(query.length());
q.set("hl.usePhraseHighlighter", true);
q.set("hl.useFastVectorHighlighter", true);
q.setTermsMinCount(queryArray.length);
q.set("hl.multiTermQuery", true);

but with no luck.

Note: for bool values eg. usePhraseHighlighter i even tried putting true as string. Nothing changed

Thank you everybody in advance

Note that a _phrase_ query must be surrounded by quotes, the string should be set as `'"hello darkness my old friend"'` so that Solr can parse `"hello darkness my old friend"`. — EricLavault, Aug 29 '22 at 15:32

score 1 · Accepted Answer · answered Jul 13 '23 at 18:00

1

If you're using the unified highlighter in Solr 7 and newer, you can set the hl.weightMatches parameter to true to get the phrase highlighting exactly how you want. In Solr 8 this option is enabled by default.

answered Jul 13 '23 at 18:00

akanarsky

26
1

Highlighting only the entire phrase in custom Solr Query builder in Java

1 Answers1