[
  {
    "name":"dat",
    "type":"STRING"
  },
  {
    "name":"timestamp",
    "type":"TIMESTAMP"
  },
  {
    "name":"null",
    "type":"STRING"
  },
  {
    "name":"long",
    "type":"INTEGER"
  },
  {
    "name":"string",
    "type":"STRING"
  },
  {
    "name":"double",
    "type":"FLOAT"
  },
  {
    "name":"boolean",
    "type":"BOOLEAN"
  }
]