Struct datafusion_python::common::data_type::PyDataType

pub struct PyDataType {
    pub data_type: DataType,
}

PyO3 requires that objects passed between Rust and Python implement the trait PyClass Since DataType exists in another package we cannot make that happen here so we wrap DataType as PyDataType This exists solely to satisfy those constraints.

Fields

data_type: DataType

Implementations

impl PyDataType

pub fn py_map_from_arrow_type_str( arrow_str_type: String ) -> PyResult<PyDataType>

There are situations when obtaining dtypes on the Python side where the Arrow type is presented as a String rather than an actual DataType. This function is used to convert that String to a DataType for the Python side to use.

Trait Implementations

impl Clone for PyDataType

fn clone(&self) -> PyDataType

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PyDataType

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<DataType> for PyDataType

fn from(data_type: DataType) -> PyDataType

Converts to this type from the input type.

impl From<PyDataType> for DataType

fn from(data_type: PyDataType) -> DataType

Converts to this type from the input type.

impl Hash for PyDataType

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl IntoPy<Py<PyAny>> for PyDataType

fn into_py(self, py: Python<'_>) -> PyObject

Performs the conversion.

impl Ord for PyDataType

fn cmp(&self, other: &PyDataType) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl PartialEq<PyDataType> for PyDataType

fn eq(&self, other: &PyDataType) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<PyDataType> for PyDataType

fn partial_cmp(&self, other: &PyDataType) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl PyClass for PyDataType

type Frozen = False

Whether the pyclass is frozen.

impl PyClassImpl for PyDataType

const IS_BASETYPE: bool = false

#[pyclass(subclass)]

const IS_SUBCLASS: bool = false

#[pyclass(extends=…)]

const IS_MAPPING: bool = false

#[pyclass(mapping)]

const IS_SEQUENCE: bool = false

#[pyclass(sequence)]

type Layout = PyCell<PyDataType>

Layout

type BaseType = PyAny

Base class

type ThreadChecker = ThreadCheckerStub<PyDataType>

This handles following two situations:

type PyClassMutability = <<PyAny as PyClassBaseType>::PyClassMutability as PyClassMutability>::MutableChild

Immutable or mutable

type Dict = PyClassDummySlot

Specify this class has #[pyclass(dict)] or not.

type WeakRef = PyClassDummySlot

Specify this class has #[pyclass(weakref)] or not.

type BaseNativeType = PyAny

The closest native ancestor. This is PyAny by default, and when you declare #[pyclass(extends=PyDict)], it’s PyDict.

fn items_iter() -> PyClassItemsIter

fn doc(py: Python<'_>) -> PyResult<&'static CStr>

Rendered class doc

fn lazy_type_object() -> &'static LazyTypeObject<Self>

fn dict_offset() -> Option<isize>

fn weaklist_offset() -> Option<isize>

impl<'a, 'py> PyFunctionArgument<'a, 'py> for &'a PyDataType

type Holder = Option<PyRef<'py, PyDataType>>

fn extract(obj: &'py PyAny, holder: &'a mut Self::Holder) -> PyResult<Self>

impl<'a, 'py> PyFunctionArgument<'a, 'py> for &'a mut PyDataType

type Holder = Option<PyRefMut<'py, PyDataType>>

fn extract(obj: &'py PyAny, holder: &'a mut Self::Holder) -> PyResult<Self>

impl PyTypeInfo for PyDataType

type AsRefTarget = PyCell<PyDataType>

Utility type to make Py::as_ref work.

const NAME: &'static str = _

Class name.

const MODULE: Option<&'static str> = _

Module name, if any.

fn type_object_raw(py: Python<'_>) -> *mut PyTypeObject

Returns the PyTypeObject instance for this type.

fn type_object(py: Python<'_>) -> &PyType

Returns the safe abstraction over the type object.

fn is_type_of(object: &PyAny) -> bool

Checks if object is an instance of this type or a subclass of this type.

fn is_exact_type_of(object: &PyAny) -> bool

Checks if object is an instance of this type.

impl Eq for PyDataType

impl StructuralEq for PyDataType

impl StructuralPartialEq for PyDataType