CODEWITHSUNDEEP
javasolr
user1472672
user1472672

Reputation: 365

Can perform partial searches without fieldname in solr

I am trying to perform a partial search on a field in solr. my_id: ABC_00123

I would like to search for 123 and see this item. I cannot get it to work without using the my_id field in the query.

In my schema.xml I have put:

  <fieldType name="text_ngrm" class="solr.TextField" positionIncrementGap="100">

      <analyzer type="index">
          <tokenizer class="solr.WhitespaceTokenizerFactory" />
          <filter class="solr.NGramFilterFactory" minGramSize="1" maxGramSize="50" />

          <filter class="solr.LowerCaseFilterFactory" />
      </analyzer>
      <analyzer type="query">
          <tokenizer class="solr.WhitespaceTokenizerFactory" />
          <filter class="solr.LowerCaseFilterFactory" />
      </analyzer>
</fieldType>

Then (I'm not sure this is necessary):

<field name="_text_ngrm_" type="text_ngrm" indexed="true" stored="false"/>

I also have:

<field name="my_id" type="text_ngrm" indexed="true" stored="true"/>

Finally:

<copyField source="my_id" dest="_text_ngrm_"/>

For the query this works: my_id: 223

But 223 on it's own does not. I have the feeling it has to do with this copyField definition.

The only way, I could get it to work was to change:

<initParams path="/update/**,/query,/select,/tvrh,/elevate,/spell,/browse">
    <lst name="defaults">
      <str name="df">_text_ngrm_</str>   
    </lst>
</initParams>

But this breaks all my other default searches. Is there not some way to add like:

<initParams path="/update/**,/query,/select,/tvrh,/elevate,/spell,/browse">
    <lst name="defaults">
      <str name="df">_text_</str>   
      <str name="df">_text_ngrm_</str>   
    </lst>
</initParams>

Thanks for any help

Upvotes: 0

Views: 37

Answers (1)

MatsLindh
MatsLindh

Reputation: 52912

You can supply the default search field in the URL when querying by providing the df yourself - so that for your single query, you can supply &df=_text_ngrm_ - since that's the field you want to search.

You can also use the edismax handler to search both - use qf=_text_ _text_ngrm_ - you can also apply different weights to the fields in that case, for example to give more exact hits a higher boost - qf=_text_^5 _text_ngrm_ will give five time higher weight to hits in the _text_ field compared to the _text_ngrm_ field.

Upvotes: 1

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