title: Lucene QueryParser and how to add a global filter?
body: <p>I have three fields in the index; firstname, lastname, and isManager (1 or 0).
  How do I go about using the QueryParser and add isManager (as a global filter) to 1 only so that I am effectively searching for the managers only?</p>
  
  <p>So, if user searches for/passes in "firstname:john", I would like to add/append "isManager:1" as a global filter. One solution is to append "NOT isManager:0" to all the user's query string... but was wondering if there's any other preferred way.</p>