{ 
  "settings": {
	"index" : {
        "number_of_shards" : 5, 
        "number_of_replicas" : 2 
    }
  },
  "mappings": {
    "books": {
      "_source" : {
        "enabled": true
      },
      "properties": {
        "title": { "type": "text" },
        "categories" : {
          "type": "nested",
          "properties" : {
            "name": { "type": "text" }
          }
        },
        "publisher": { "type": "keyword" },
        "description": { "type": "text" },
        "published_date": { "type": "date" },
        "isbn": { "type": "keyword" },
        "rating": { "type": "byte" }
       }
   },
   "authors": {
     "properties": {
       "first_name": { "type": "keyword" },
       "last_name": { "type": "keyword" }
     },
     "_parent": {
        "type": "books"
      }
    }
  }
}