java - How to custom search for text query in mongodb? -

i'm new in mongodb. have following data json format in mongodb. need search booklabel or shortlabel book , should show me information book. example: if query 'cosmos' it'll show description book, like: booklabel, writer, yearpublish, url. how can in java? need query, please help.

  "class":"science",   "description":[        {           "booklabel":"cosmos (mass market paperback)",         "shortlabel":"cosmos",         "writer":"carl sagan",         "yearpublish":[              "2002"         ],         "url":"https://www.goodreads.com/book/show/55030.cosmos"      },      {           "booklabel":"the immortal life of henrietta lacks",         "shortlabel":"immortal life",         "writer":"rebecca skloot",         "yearpublish":[              "2010, 2011"         ],         "url":"https://www.goodreads.com/book/show/6493208-the-immortal-life-of-henrietta-lacks"      }   ],   "class":"history",   "description":[        {           "booklabel":"the rise , fall of third reich",         "shortlabel":"rise , fall",         "writer":"william l. shirer",         "yearpublish":[              "1960"         ],         "url":"https://www"      }   ] 

}

with mongodb java driver v3.2.2 can this:

finditerable<document> iterable = collection.find(document.parse("{\"description.shortlabel\": {$regex: \"cosmos\"}")); 

this returns documents containing cosmos in description.shortlabel nested field. exact match, try {"description.shortlabel": "cosmos"}. replace shortlabel booklabelto search booklabel field. can iterable.foreach(new block<document>()) on returned documents. search both booklabel , shortlabel, can $or{}. syntax wrong check mongodb manual. general idea.