Nested Datatype

• Lucene has no concept of inner objects and hence data is flattened when being indexed with not quite as expected behavior.

• Data posted

  {
  "group" : "fans",
  "user" : [{
      "first" : "John", "last" :  "Smith"
    },{
      "first" : "Alice", "last" :  "White"
    }
  ]
  }

• Indexed by Lucene as:

  {
  "group" :        "fans",
  "user.first" : [ "alice", "john" ],
  "user.last" :  [ "smith", "white" ]
  }

• What you think would be a consequence of such indexing?

• Should you be able to find person user.first:john AND user.last:white?

• Nested is a specialized version of the 'object' datatype that allows querying arrays of objects independently from each other addressing less than perfect search results