SOLR - wildcard search with capital letter

StackOverflow https://stackoverflow.com/questions/1840347

  •  12-09-2019
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Question

I have a problem with SOLR searching. When i`am searching query: dog* everything is ok, but when query is Dog*(with first capital letter), i get no results. Any advice? My config:

<fieldType name="text" class="solr.TextField" positionIncrementGap="100">
  <analyzer type="index">
    <tokenizer class="solr.WhitespaceTokenizerFactory"/>
    <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt"/>
    <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="0"/>
    <filter class="solr.LowerCaseFilterFactory"/>
    <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
  </analyzer>
  <analyzer type="query">
    <tokenizer class="solr.WhitespaceTokenizerFactory"/>
    <filter class="solr.SynonymFilterFactory" synonyms="synonyms.txt" ignoreCase="true" expand="true"/>
    <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt"/>
    <filter class="solr.WordDelimiterFilterFactory"  generateWordParts="1" generateNumberParts="1" catenateWords="0" catenateNumbers="0" catenateAll="0" splitOnCaseChange="0"/>
    <filter class="solr.LowerCaseFilterFactory"/>
    <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
  </analyzer>
</fieldType>
Was it helpful?

Solution

Received answer on another resource. The problem is: http://wiki.apache.org/solr/AnalyzersTokenizersTokenFilters"On wildcard and fuzzy searches, no text analysis is performed on the search word."

Hope, this will help someone.

OTHER TIPS

Have you tried using EdgeNGrams? See my answer to question 2413946.

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