Using multiple tokenizers in Solr

Question

Excuse me if this is a dumb question. I was just thrown into this task, so I don't know much about Solr, indexing, etc. But basically what we want to be able to do is perform a query and get results back that are not case sensitive and that match partial words from the index.

We have a Solr schema set up at the moment that has been modified so that we can query and return results no matter what case they are. So, if we search for iPOd, we will see iPod returned. The code to do this is:

<fieldType name="text" class="solr.TextField" positionIncrementGap="100">
  <analyzer type="index">
    <tokenizer class="solr.WhitespaceTokenizerFactory"/>
    <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" enablePositionIncrements="true" />
    <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="1"/>
    <filter class="solr.LowerCaseFilterFactory"/>
    <filter class="solr.SnowballPorterFilterFactory" language="English" protected="protwords.txt"/>
  </analyzer>
...
</fieldType>

I have found this code that will allow us to do a partial word match query, but I don't think I can have two tokenizers on one field.

<fieldType name="text" class="solr.TextField" >
  <analyzer type="index">
    <tokenizer class="solr.NGramTokenizerFactory" minGramSize="3" maxGramSize="15" />
    <filter class="solr.LowerCaseFilterFactory"/>
  </analyzer>
...
</fieldType>

So what can I do to perform this tokenizer on the field as well?
Or is there a way to merge them?
Or is there another way I can accomplish this task?

Answer 1

Declare another fieldType (i.e. a different name) that has the NGram tokenizer, then declare a field that uses the fieldType with NGram and another field with the standard "text" fieldType. Use copyField to copy one to another. See Indexing same data in multiple fields.