.. _cast:

====
Cast
====

Description
-----------

Cast fields or the entire key or value to a specific type. For example, this can be used to force an integer field into an integer of smaller width. Only simple primitive types are supported, such as integer, float, boolean, and string.
Use the concrete transformation type designed for the record key (``org.apache.kafka.connect.transforms.Cast$Key``) or value (``org.apache.kafka.connect.transforms.Cast$Value``).

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Properties
----------

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   *  - Name
      - Description
      - Type
      - Default
      - Valid Values
      - Importance
   *  - ``spec``
      - A single type to cast the entire value, or for Maps and Structs the comma-separated list of field names and the type to which they should be cast, of the form ``field1:type1,field2:type2``. Valid types are ``int8``, ``int16``, ``int32``, ``int64``, ``float32``, ``float64``, ``boolean``, and ``string``.
      - list
      -
      - comma-separated list of colon-delimited pairs of field:type, e.g. ``foo:int32,bar:string``
      - high