Hi all,
I'm trying to use prefixes to match similar strings to a query string. I
have the following field type:
<fieldtype name="prefix" stored="true" indexed="true"
class="solr.TextField">
<analyzer>
<tokenizer class="solr.StandardTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
<filter class="solr.StopFilterFactory"/>
<filter class="solr.EdgeNGramFilterFactory" minGramSize="2"
maxGramSize="10"/>
</analyzer>
</fieldtype>
field:
<field name="wordPrefix" type="prefix" indexed="true" stored="true"/>
copyField:
<copyField source="word" dest="wordPrefix"/>
If I apply this to an indexed string: "ipod shuffle" and query string:
"shufle" (missing f) I get matching terms for "sh", "shu" "shuf"
Index Analyzer ipodshuffle ipodshuffle ipodshuffle ipipoipodshshushuf
shuffshufflshuffle Query Analyzer shufle shufle shufle shshushufshufl
shufle
However when I query for with "shufle" i get no results:
http://localhost:8983/solr/select?q=wordPrefix%3Ashufle&fl=wordPrefix&qt=standard&debugQuery=on
<lst name="debug">
<str name="rawquerystring">wordPrefix:shufle</str>
<str name="querystring">wordPrefix:shufle</str>
-
<str name="parsedquery">
PhraseQuery(wordPrefix:"sh hu uf fl le shu huf ufl fle shuf hufl ufle shufl
hufle shufle")
</str>
-
<str name="parsedquery_toString">
wordPrefix:"sh hu uf fl le shu huf ufl fle shuf hufl ufle shufl hufle
shufle"
</str>
This post suggests that I need to set the Position Increment for the my
token filter, but I'm not sure how to do that or if it's possible.
http://www.lucidimagination.com/search/document/bc643c39f0b6e423/queryparser_and_ngrams#629b39ea39aa9cd4
Thoughts? Thanks...Tom
