title: Find in mongodb subdocument
body: <p>I use SpringData. I have document with subdocument, it looks like :</p>
  
  <blockquote>
    <p>{
       "name" : "MongoDB",
       "type" : "database",
       "count" : 1,
       "info" : {
                   x : 203,
                   y : 102
                 }
    }</p>
  </blockquote>
  
  <p>How can I find all documents with(for example) x=203
  Thanks!</p>