NGramFilterFactory usage

[Indika Tantrigoda]

Hi all,

I've been working with Solr for while and the search components work as
expected.
Recently I've had the requirement to do searching on partial words and I
setup the NGramFilterFactory.

My schema.xml is as follows :

<fieldType name="nGram" class="solr.TextField"
            positionIncrementGap="100" stored="false" multiValued="true">
            <analyzer type="index">
                <tokenizer class="solr.StandardTokenizerFactory"/>
                <filter class="solr.LowerCaseFilterFactory"/>
                <filter class="solr.NGramFilterFactory" minGramSize="3"
                          maxGramSize="15"/>
            </analyzer>
            <analyzer type="query">
                <tokenizer class="solr.StandardTokenizerFactory"/>
        <filter class="solr.LowerCaseFilterFactory"/>
        </analyzer>
    </fieldType>

<field name="title" type="text" indexed="true" stored="true"
multiValued="false"/>
<field name="nGram_text" type="nGram" indexed="true" stored="true"
multiValued="true"/>
<copyField source="title" dest="nGram_text"/>

Furthermore I am using the dismax query hanlder and have set a boost on the
nGram_text field.

If I do a *:* on the Solr administration interface it shows the nGram_text
field to be populated.
However if I search for plan (Assume I indexed the word Plane) no results
are shown.
Is there any other configurations that needs to be done ?

Thanks in advance,

Regards,
Indika