String field does not yield partial match result using qf parameter

[Mugoma Joseph O.]

Hello,

I am newbie to solr.

I am trying out partial search (match). My experience is opposite of
http://lucene.472066.n3.nabble.com/string-field-does-not-yield-exact-match-result-using-qf-parameter-td4060096.html

When I add 'qf' to to dismax query I get no result unless there's a full
match.

I am using NGramFilterFactory as follows:

     <fieldType name="text_edgengrams" class="solr.TextField">
       <analyzer type="index">
         <tokenizer class="solr.LowerCaseTokenizerFactory"/>
         <filter class="solr.NGramFilterFactory" minGramSize="3"
maxGramSize="15"/>
       </analyzer>
       <analyzer type="query">
         <tokenizer class="solr.LowerCaseTokenizerFactory"/>
       </analyzer>
     </fieldType>

     ...


     <field name="text_ngrams" type="text_edgengrams" indexed="true"
stored="false" multiValued="true" />

     ...

     <field name="domain" type="string" indexed="true" stored="true"/>

     ...

     <copyField source="domain" dest="text_ngrams"/>


If I have yengas.com in indexed I can search for yengas.com but not
yengas. However, If I drop 'qf' I can search for yengas.


Example searches:

     $ curl
"http://localhost:8282/solr/links/select?q=domain:yengas&wt=json&indent=on&fl=id,domain,score";
     => "response":{"numFound":0,"start":0,"docs":[]


     $ curl
"http://localhost:8282/solr/links/select?q=domain:yengas.com&wt=json&indent=on&fl=id,domain,score";
     => "response":{"numFound":3,"start":0,"docs":[]

     $ curl
"http://localhost:8282/solr/links/select?defType=dismax&q=yengas&qf=domain^4&pf=domain&ps=0&fl=id,domain,score";
     => "response":{"numFound":0,"start":0,"docs":[]


     $ curl
"http://localhost:8282/solr/links/select?defType=dismax&q=yengas.com&pf=domain&ps=0&fl=id,domain,score";
     => "response":{"numFound":3,"start":0,"docs":[]


The partial match fails on dismax and normal query.

What could I be missing?


Thanks.

Mugoma.