Index mapping structure for world index

world-index.json

{
  "aliases":{},
  "warmers":{},
  "mappings": {
    "world": {
      "properties": {
        "capital": {
          "properties": {
            "district": {
              "type": "string"
            },
            "id": {
              "type": "long"
            },
            "name": {
              "type": "string"
            },
            "population": {
              "type": "long"
            }
          }, 
          "type": "nested"
        },
        "cities": {
          "properties": {
            "district": {
              "type": "string"
            },
            "id": {
              "type": "long"
            },
            "name": {
              "type": "string"
            },
            "population": {
              "type": "long"
            }
          },
          "type": "nested"
        },
        "code": {
          "type": "string"
        },
        "continent": {
          "type": "string"
        },
        "government_form": {
          "type": "string"
        },
        "iso_code": {
          "type": "string"
        },
        "languages": {
          "properties": {
            "language": {
              "type": "string"
            },
            "official": {
              "type": "string"
            },
            "percentage": {
              "type": "double"
            }
          },
          "type": "nested"
        },
        "life_expectancy": {
          "type": "double"
        },
        "name": {
          "type": "string"
        },
        "population": {
          "type": "long"
        },
        "region": {
          "type": "string"
        },
        "surface_area": {
          "type": "double"
        },
        "year_of_independence": {
          "type": "long"
        }
      }
    }
  },
  "settings": {
    "index": {
      "number_of_shards": "5",
      "number_of_replicas": "1"
    }
  }
}