can I form a SolrQuery and query a SolrServer in a request handler?

[Brian Whitman]

I'm in a request handler: public void  
handleRequestBody(SolrQueryRequest req, SolrQueryResponse rsp)  {

And in here i want to form a SolrQuery based on the req, query the  
searcher and return results.

But how do I get a SolrServer out of the req? I can get a  
SolrIndexSearcher but that doesn't seem to let me pass in a SolrQuery.

I need a SolrQuery because I am forming a dismax query with a function  
query, etc...