Type

Type description contains definition of its fields and a number of additional settings.

{
    "root": "main",
    "types": {
        "main": {
            "drop_unknown_fields": true,
            "fields": {
                "first": {},
                "second": {}
            }
        }
    }
}

Every field either refers a different type if it's definded with multiple: true and type: TYPE_NAME, or contains inline definition. Inline fields are used most often and their definition is flexible enough to cover majority of use-cases.

{
    "root": "main",
    "types": {
        "main": {
            "fields": {
                "inline_field": {"default": 42},
                "sub_type": {"multiple": true, "type": "secondary"}
            }
        },
        "secondary": {}
    }
}

Here's the list of attributes that can be used in the field definition:

Attribute	Description
map	New name of the field
validators	List of transmutators applied to the field
remove	Flag that removes field from data when enabled
default	Default value if field is missing
default_from	Name of the field used as source of default value
value	Static value that replaces any existing value of the field
replace_from	Name of the field used as a source of value
validate_missing	Flag that applies validation even if data does not contains the field
weight	Weight that controls order of field processing