title: How to do a Multi field - Phrase search in Lucene?
body: <p>Title asks it all... I want to do a multi field - phrase search in Lucene.. How to do it ?  </p>
  
  <p>for example : 
  I have fields as <code>String s[] = {"title","author","content"};</code><br>
  I want to search <code>harry potter</code> across all fields.. How do I do it ?    </p>
  
  <p>Can someone please provide an example snippet ?</p>