JsonSchema

JsonSchema representation of schema metadata

JSON representation 
{ "description": string, "default": value, "required": [ string ], "type": [ string ], "items": { object (JsonSchema) }, "properties": { string: { object (JsonSchema) }, ... }, "enum": [ value ], "jdbcType": enum (DataType), "format": string, "additionalDetails": { object } }
Fields
description

string

A description of this schema.
default

value (Value format)

The default value of the field or object described by this schema.
required[]

string

Whether this property is required.
type[]

string

JSON Schema Validation: A Vocabulary for Structural Validation of JSON
items

object (JsonSchema)

Schema that applies to array values, applicable only if this is of type array.
properties

map (key: string, value: object (JsonSchema))

The child schemas, applicable only if this is of type object. The key is the name of the property and the value is the json schema that describes that property

An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
enum[]

value (Value format)

Possible values for an enumeration. This works in conjunction with type to represent types with a fixed set of legal values
jdbcType

enum (DataType)

JDBC datatype of the field.
format

string

Format of the value as per https://json-schema.org/understanding-json-schema/reference/string.html#format
additionalDetails

object (Struct format)

Additional details apart from standard json schema fields, this gives flexibility to store metadata about the schema