CODEWITHSUNDEEP
solrsunspotsunspot-rails
dc10
dc10

Reputation: 2198

Solr does not find search string

I am running a rails application sunspot solr and a table for cities with a column named name. There is a city named 'Emmendingen'. I get results for 'Emmendi' 'Emmendin' 'Emmendige' but not for the name itself 'Emmendingen'.

In the model I search like this

search(:include => :geo_name_admin_one_code) do
  any do
    fulltext(q, :fields=> [:name])
    fulltext(q, :fields=> [:alternate_name])
  end
  with(:feature_class, 'P')
  order_by(:population,:desc)
  limit(10)
end

My config looks like this

    <fieldType name="text" class="solr.TextField" omitNorms="false">
  <analyzer type="index">
    <tokenizer class="solr.WhitespaceTokenizerFactory"/>
    <filter class="solr.NGramFilterFactory" minGramSize="2" maxGramSize="10"/>
    <filter class="solr.ReversedWildcardFilterFactory" />
    <filter class="solr.LowerCaseFilterFactory"/>
    <filter class="solr.TrimFilterFactory" />
    <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
    <filter class="solr.EdgeNGramFilterFactory" minGramSize="2" maxGramSize="10"/>
  </analyzer>
  <analyzer type="query">
    <tokenizer class="solr.StandardTokenizerFactory"/>
    <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="0" catenateNumbers="0" catenateAll="0" splitOnCaseChange="1"/>
    <filter class="solr.LowerCaseFilterFactory"/>
    <filter class="solr.TrimFilterFactory" />
  </analyzer>
</fieldType>

So how can I match the exact name?

Upvotes: 0

Views: 171

Answers (2)

dc10
dc10

Reputation: 2198

I solved it with this config

    <!-- *** This fieldType is used by Sunspot! *** -->
<fieldType name="text" class="solr.TextField" omitNorms="false">
  <analyzer type="index">
    <tokenizer class="solr.StandardTokenizerFactory"/>
    <filter class="solr.StandardFilterFactory"/>
    <filter class="solr.LowerCaseFilterFactory"/>
    <filter class="solr.EdgeNGramFilterFactory" minGramSize="2" maxGramSize="15" side="front"/>
  </analyzer>
  <analyzer type="query">
    <tokenizer class="solr.StandardTokenizerFactory"/>
    <filter class="solr.StandardFilterFactory"/>
    <filter class="solr.LowerCaseFilterFactory"/>
    <filter class="solr.PorterStemFilterFactory"/>
  </analyzer>
</fieldType>

Upvotes: 1

Alexandre Rafalovitch
Alexandre Rafalovitch

Reputation: 9789

Your tokenized indexed form cannot have more than 10 characters. You have trimmed it twice, once with NGrams and once with EdgeNGrams (which looks very wrong).

Your query does no trimming, so your 11 word character does not match anything.

The easiest way to troubleshoot that on your own is the Analysis screen in the Admin UI, where you can enter both index and query strings and see what happens and whether they would match.

Upvotes: 1

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