Performing wild card phrase searches can be tricky. Spend some time figuring
this one out.
1. To perform a wildcard search on a phrase, it is very important to escape the
SPACE, so that SOLR treats it as a single phrase.
Ex: Citibank NA => Citibank\ NA
You can use org.apache.solr.client.solrj.util.ClientUtils (part of solrj
library) to perform the escapes
--------------
Example
--------------
So that a search for: CITIBANK\ N*
Should produce results:
CITIBANK NA
CITIBANK NATIONAL
CITIBANK N
2. Also make sure your field (I named it "client_name_starts") is of fieldType
that is maintained as a single Token during indexing.
--------------
Example
--------------
<!-- lowercases the entire field value, keeping it as a single token. -->
<fieldType name="lowercase" class="solr.TextField"
positionIncrementGap="100">
<analyzer>
<tokenizer class="solr.KeywordTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory" />
</analyzer>
</fieldType>
<field name="client_name_starts" type="lowercase" indexed="true" stored="true"
/>
3. Make sure to Lower Case/Upper Case (depending on your setup) the search user
input string, before sending it to SOLR - since wildcards are NOT analyzed -
and send "AS IS"
Good Luck
Kind regards,
Vladimir Sutskever
Investment Bank - Technology
JPMorgan Chase, Inc.
Tel: (212) 552.5097
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