title: Solr indexing, split string field into list
body: <p>In Solr, I want to index string field as list by splitting it.</p>
  
  <p>Below is my indexing query in <code>data_config.xml</code> file.</p>
  
  <pre><code>&lt;document name="Example"&gt;
  &lt;entity dataSource="example_table" name="Example" 
      query="select id, text from example_table"
      pk="id"
      transformer="RegexTransformer"
  &gt;
      &lt;field column="id" name="id" /&gt;
      &lt;field column="text" name="text" /&gt;
  &lt;/entity&gt;
  </code></pre>
  
  <p>Field <code>text</code> is a comma separated string. Example: <code>"A, B, C"</code></p>
  
  <p>Below is the field definition in <code>schema.xml</code> file</p>
  
  <pre><code>&lt;field name="text" type="string" indexed="true" stored="true" required="false" multiValued="true" /&gt;
  </code></pre>
  
  <p>When I'm querying Solr the output is:</p>
  
  <pre><code>"text":["A, B, C"]
  </code></pre>
  
  <p>Could someone explain me how can I get the result as below?</p>
  
  <pre><code>"text":["A","B","C"]
  </code></pre>