Solr WildCard Search Issue

Question

I am facing an issue in the solr search....The wild card search seems to be working fine but there are issues when i am trying to find terms within another word.....For example: "rtebiggestBug", when i search for biggest , it doesn't give any results.I have the following entries made in the schema.xml file

 <fieldType name="text" class="solr.TextField" positionIncrementGap="100">
      <analyzer type="index">
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <!-- in this example, we will only use synonyms at query time
        <filter class="solr.SynonymFilterFactory" synonyms="index_synonyms.txt" ignoreCase="true" expand="false"/>
        -->
        <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt"/>
     <!--   <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="1"/>-->
        <filter class="solr.LowerCaseFilterFactory"/>
     <!--   <filter class="solr.EnglishPorterFilterFactory" protected="protwords.txt"/> -->
        <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
        <filter class="solr.EdgeNGramFilterFactory" minGramSize="1" maxGramSize="50" preserveOriginal="1"/>
      </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="1"/>-->
        <filter class="solr.LowerCaseFilterFactory"/>
      <!--  <filter class="solr.EnglishPorterFilterFactory" protected="protwords.txt"/>-->
        <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
      </analyzer>
    </fieldType>

Another issue is,it does not find strings at the end of the word. Example: I searched on “bug” and found bugs and not the word "samplebug".

It would be really helpful if you could help me on this issue..

Thanks in advance.

SO question on Solr wildcarding, with additional tips: http://stackoverflow.com/questions/1974394/apache-solr-search-part-of-the-word/1976045#1976045 — Doug_Ivison, Dec 01 '13 at 14:14

score 4 · Answer 1 · answered Sep 20 '11 at 07:10

By default Solr does not support left truncation, like searches for *bug to find samplebug.

Use the solr.ReversedWildcardFilterFactory in order to reverse the term and index the therm in an revered way, like gubelpmas. solr.ReversedWildcardFilterFactory

Here is an tutorial: http://solr.pl/en/2010/12/20/wildcard-queries-and-how-solr-handles-them/

score 0 · Answer 2 · answered Sep 20 '11 at 07:10

0

It seems your query parser is not able to handle leading wildcard searches.

What query parser are you using ?

The Extended dismax query parser supports searches with leading wildcards. you want to check for it.

answered Sep 20 '11 at 07:10

Jayendra

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Solr WildCard Search Issue

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