Substring matches within SOLR

search solr substring edismax
Michael picture Michael · Jun 21, 2010 · Viewed 13.7k times · Source

I can't seem to figure out how to find substring matches with SOLR, I've figured out matches based on a prefix so I can get ham to match hamburger.

How would I get a search for 'burger' to match hamburger as well? I tried burger but this tossed an error '*' or '?' not allowed as first character in WildcardQuery.

How can I match substrings using SOLR?

Answer

Paul picture Paul · Oct 31, 2012

If anyone ends up here after searching for "apachesolr substring", there's a simpler solution for this : https://drupal.stackexchange.com/a/27956/10419 (from https://drupal.stackexchange.com/questions/26024/how-can-i-make-search-with-a-substring-of-a-word)

Add ngramfilter to text type definition in schema.xml in solr config directory.

<fieldType name="text" class="solr.TextField" positionIncrementGap="100">
  <analyzer type="index">
    <filter class="solr.EdgeNGramFilterFactory" minGramSize="3" maxGramSize="25" />

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