[
http://issues.apache.org/jira/browse/SOLR-81?page=comments#action_12458052 ]
Otis Gospodnetic commented on SOLR-81:
--------------------------------------
Something like this, then?
<fieldtype name="queryString" class="solr.TextField"
positionIncrementGap="1">
<analyzer>
<tokenizer class="solr.NGramTokenizerFactory"/> <!-- Or maybe just make
an NGramAnalyzer? -->
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>
</fieldtype>
Plus:
<copyField source="word" dest="word_start1"/>
<copyField source="word" dest="word_end1"/>
<copyField source="word" dest="word_start2"/>
<copyField source="word" dest="word_end2"/>
<copyField source="word" dest="word_start3"/>
<copyField source="word" dest="word_end3"/>
<copyField source="word" dest="word_gram1"/>
<copyField source="word" dest="word_gram2"/>
<copyField source="word" dest="word_gram3"/>
<copyField source="word" dest="word_gram4"/>
I'd probably also want to give those word_start* n-grams some boost, though I
don't see how to do that in schema.xml yet.
> Add Query Spellchecker functionality
> ------------------------------------
>
> Key: SOLR-81
> URL: http://issues.apache.org/jira/browse/SOLR-81
> Project: Solr
> Issue Type: New Feature
> Components: search
> Reporter: Otis Gospodnetic
> Priority: Minor
>
> Use the simple approach of n-gramming outside of Solr and indexing n-gram
> documents. For example:
> <doc>
> <field name="word">lettuce</field>
> <field name="start3">let</field>
> <field name="gram3">let ett ttu tuc uce</field>
> <field name="end3">uce</field>
> <field name="start4">lett</field>
> <field name="gram4">lett ettu ttuc tuce</field>
> <field name="end4">tuce</field>
> </doc>
> See:
> http://www.mail-archive.com/solr-user@lucene.apache.org/msg01254.html
> Java clients: SOLR-20 (add delete commit optimize), SOLR-30 (search)
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