title: Dismax Request Handler
body: <p>I'm using solr to search a set of data by name (e.g. "Dan" or "Joe Smith"). I'd like to return the results specified by the query (edit: with a wildcard on the end) in an order specified by another indexed field double_score (e.g. 10.0 or 72.3). I currently have the following which fails to work at all: </p>
  
  <pre><code>&lt;!-- Note that the default search is on the field name --&gt;
  &lt;requestHandler name="/scoresearch" class="solr.SearchHandler" default="true"&gt;
     &lt;!-- &lt;lst name="invariants"&gt;
            &lt;str name="q"&gt;{!boost b=sum(double_score) defType=dismax v=$qq}&lt;/str&gt;
          &lt;/lst&gt; --&gt;
          &lt;lst name="defaults"&gt;
            &lt;str name="defType"&gt;dismax&lt;/str&gt;    
            &lt;str name="echoParams"&gt;explicit&lt;/str&gt;
        &lt;int name="rows"&gt;10&lt;/int&gt;
       &lt;!-- &lt;str name="qq"&gt;&lt;/str&gt; --&gt;
        &lt;str name="qf"&gt;double_score&lt;/str&gt;
        &lt;str name="debug"&gt;true&lt;/str&gt;
        &lt;str name="q.alt"&gt;*:*&lt;/str&gt;
      &lt;/lst&gt;
  &lt;/requestHandler&gt;
  </code></pre>
  
  <p>If I remove the comments, then the search does work s.t. whatever query I make is replaced by q.alt and then boosted by the value of double_score. If this didn't replace the q.alt, it would be the desired effect.</p>
  
  <p>Also note that while I have not yet delved into more interesting possibilities such as tokenizing the names, I do plan to do so. So any possible suggestion/solution shouldn't preclude that. </p>