Struct arrow::array::ListArray

pub struct ListArray { /* fields omitted */ }

A list array where each element is a variable-sized sequence of values with the same type.

Methods

impl ListArray

pub fn values(&self) -> ArrayRef

Returns an reference to the values of this list.

pub fn value_type(&self) -> DataType

Returns a clone of the value type of this list.

pub fn value_offset(&self, i: usize) -> i32

Returns the offset for value at index i.

Note this doesn't do any bound checking, for performance reason.

pub fn value_length(&self, i: usize) -> i32

Returns the length for value at index i.

Note this doesn't do any bound checking, for performance reason.

Trait Implementations

impl Array for ListArray

fn as_any(&self) -> &dyn Any

Returns the array as Any so that it can be downcast to a specific implementation

fn data(&self) -> ArrayDataRef

Returns a reference-counted pointer to the data of this array

fn data_ref(&self) -> &ArrayDataRef

Returns a borrowed & reference-counted pointer to the data of this array

fn data_type(&self) -> &DataType

Returns a reference to the data type of this array

fn slice(&self, offset: usize, length: usize) -> ArrayRef

Returns a zero-copy slice of this array with the indicated offset and length.

fn len(&self) -> usize

Returns the length (i.e., number of elements) of this array

fn offset(&self) -> usize

Returns the offset of this array

fn is_null(&self, i: usize) -> bool

Returns whether the element at index i is null

fn is_valid(&self, i: usize) -> bool

Returns whether the element at index i is not null

fn null_count(&self) -> usize

Returns the total number of nulls in this array

impl From<Arc<ArrayData>> for ListArray

Constructs a ListArray from an array data reference.

fn from(data: ArrayDataRef) -> Self

Performs the conversion.

impl From<ListArray> for BinaryArray

Creates a BinaryArray from List<u8> array

fn from(v: ListArray) -> Self

Performs the conversion.