How to extract terms associated with a field

[Rantjil Bould]

Hello Group,
                I have a field name prefix1 and which is copy of another
field called "content". Field type of prefix1 is
<fieldType name="prefix_token" class="solr.TextField"
positionIncrementGap="1">
               <analyzer type="index">
                         <tokenizer
class="solr.WhitespaceTokenizerFactory"></tokenizer>
                         <filter
class="solr.LowerCaseFilterFactory"></filter>
                         <filter class="solr.EdgeNGramFilterFactory"
minGramSize="1" maxGramSize="20"></filter>
               </analyzer>
               <analyzer type="query">
                         <tokenizer
class="solr.WhitespaceTokenizerFactory"></tokenizer>
                         <filter
class="solr.LowerCaseFilterFactory"></filter>
               </analyzer>
    </fieldType>
My question is, how can i extract terms associated with prefix1. Is there
ant query parameter that can extract all tokens for a field.
Your help/input would be appreciated.

regards,
Ranjan