Field

Specification

{
  "name": String,
  "description": String,
  "length": Long
  "fieldType": <field type spec>,
  "fieldIndex": Integer
}

Structure values

Field Name	Type	Description	Required	Default
name	String	Field name.	Required
description	String	Expanded field information.		None
length	Long	Maximum length of a string that can be stored in this field. Applicable to string field type.		None
fieldType	String or object	Field data type. Supported types: int, decimal, string, long, float, double, timestamp, date, boolean, binary, array, map, struct. int, decimal, string, long, float, double, timestamp, date, boolean, binaryfields are specified with string values. array, map, and struct fields are specified with JSON.	Required
fieldIndex	Integer	Order of the fields in the table.		None

Field type specifications for array, map, and struct fields

Array field

{
  "dataType": "array",
  "elementType": <field type spec>
}

Map field

{
  "dataType": "map",
  "keyType": <field type spec>,
  "valueType": <field type spec>
}

Struct field

{
  "dataType": "struct",
  "fields": [
    {
      "name": String,
      "fieldType": <field type spec>
    }
  ]
}

Example

{
  "name": "price",
  "description": "This is the price for which the product sold.",
  "fieldType": "long"
}