Class ParamExtType

python/pyarrow/tests/test_cffi.py:64–81

class ParamExtType(pa.ExtensionType):

    def __init__(self, width):
        self._width = width
        super().__init__(pa.binary(width),
                         "pyarrow.tests.test_cffi.ParamExtType")

    @property
    def width(self):
        return self._width

    def __arrow_ext_serialize__(self):
        return str(self.width).encode()

    @classmethod
    def __arrow_ext_deserialize__(cls, storage_type, serialized):
        width = int(serialized.decode())
        return cls(width)


def make_schema():