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From Jan Høydahl <jan....@cominvent.com>
Subject Re: String field does not yield partial match result using qf parameter
Date Tue, 25 Jun 2013 09:07:41 GMT
fieldType "string" is not tokenized, so your observation is correct. You need to use a fieldType
with analysis and tokenization to get the behavior you want.

--
Jan Høydahl, search solution architect
Cominvent AS - www.cominvent.com

25. juni 2013 kl. 02:35 skrev "Mugoma Joseph O." <mugoma@yengas.com>:

> 
> It looks like partial search works only with copied to field. This works:
> 
> $ curl
> "http://localhost:8282/solr/links/select?q=text_ngrams:yengas&wt=json&indent=on&fl=id,domain,score"
> 
> On Tue, June 25, 2013 12:39 am, Mugoma Joseph O. wrote:
>> 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.
>> 
>> 
>> 
>> 
> 
> 


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