Hello, I am working on creating a auto-complete functionality for my field
merchant_name present all over my documents. I am using the version 3.4 of
Solr and I am trying to take advantage of the Suggester functionality.
Unfortunately so far I didn't figure out how to make it works as I
expected.
If my list of merchants present in my documents is:(my real list is bigger
than the following list, that's the reason why I don't use dictionnary and
also because it will change often.)
Redoute
Suisse Trois
Conforama
But
Cult Beauty
Brother Trois
I expect from the Suggester component to match words or part of them and
return phrases where words or part of them have been matched.
for example with /suggest?q=tro, I would like to get this:
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">0</int>
</lst>
<lst name="spellcheck">
<lst name="suggestions">
<lst name="tro">
<int name="numFound">2</int>
<int name="startOffset">0</int>
<int name="endOffset">x</int>
<arr name="suggestion">
<str>Bother Trois</str>
<str>Suisse Trois</str>
</arr>
</lst>
</lst>
</lst>
</response>
I experimented suggestion on a field configured with the tokenizer
"solr.KeywordTokenizerFactory" or "solr.WhitespaceTokenizerFactory".
In my mind I have to find a way to handle 3 cases:
/suggest?q=bo ->(should return) bother trois
/suggest?q=tro ->(should return) bother trois, suisse trois
/suggest?q=bo%20tro ->(should return) bother trois
With the "solr.KeywordTokenizerFactory" I get:
/suggest?q=bo -> bother trois
/suggest?q=tro -> "nothing"
/suggest?q=bo%20tro -> "nothing"
With the "solr.WhitespaceTokenizerFactory" I get:
/suggest?q=bo -> bother
/suggest?q=troi -> trois
/suggest?q=bo%20tro -> bother, trois
Not exactly what I want ... :(
My configuration in the file solrconfig.xml for the suggester component:
<searchComponent class="solr.SpellCheckComponent" name="suggestMerchant">
<lst name="spellchecker">
<str name="name">suggestMerchant</str>
<str name="classname">org.apache.solr.spelling.suggest.Suggester</str>
<str
name="lookupImpl">org.apache.solr.spelling.suggest.fst.FSTLookup</str>
<!-- Alternatives to lookupImpl:
org.apache.solr.spelling.suggest.fst.FSTLookup [finite state
automaton]
org.apache.solr.spelling.suggest.fst.WFSTLookupFactory [weighted
finite state automaton]
org.apache.solr.spelling.suggest.jaspell.JaspellLookup [default,
jaspell-based]
org.apache.solr.spelling.suggest.tst.TSTLookup [ternary trees]
-->
<str name="field">merchant_name_autocomplete</str> <!-- the indexed
field to derive suggestions from -->
<float name="threshold">0.0</float>
<str name="buildOnCommit">true</str>
<!--
<str name="sourceLocation">american-english</str>
-->
</lst>
</searchComponent>
<requestHandler class="org.apache.solr.handler.component.SearchHandler"
name="/suggest/merchant">
<lst name="defaults">
<str name="spellcheck">true</str>
<str name="spellcheck.dictionary">suggestMerchant</str>
<str name="spellcheck.onlyMorePopular">true</str>
<str name="spellcheck.count">10</str>
<str name="spellcheck.collate">true</str>
<int name="spellcheck.maxCollations">10</int>
</lst>
<arr name="components">
<str>suggestMerchant</str>
</arr>
</requestHandler>
How can I implement autocomplete with the Suggester component to get what I
expect? Thanks for your help, I really appreciate.
