Struct arrow2::array::FixedSizeBinaryArray

pub struct FixedSizeBinaryArray { /* private fields */ }

The Arrow’s equivalent to an immutable Vec<Option<[u8; size]>>. Cloning and slicing this struct is O(1).

Implementations

impl<'a> FixedSizeBinaryArray

pub fn iter(
    &'a self
) -> ZipValidity<&'a [u8], ChunksExact<'a, u8>, BitmapIter<'a>>

constructs a new iterator

pub fn values_iter(&'a self) -> ChunksExact<'a, u8>

Returns iterator over the values of FixedSizeBinaryArray

impl FixedSizeBinaryArray

pub fn try_new(
    data_type: DataType,
    values: Buffer<u8>,
    validity: Option<Bitmap>
) -> Result<Self, Error>

Creates a new FixedSizeBinaryArray.

Errors

This function returns an error iff:

• The data_type’s physical type is not crate::datatypes::PhysicalType::FixedSizeBinary
• The length of values is not a multiple of size in data_type
• the validity’s length is not equal to values.len() / size.

pub fn new(
    data_type: DataType,
    values: Buffer<u8>,
    validity: Option<Bitmap>
) -> Self

Creates a new FixedSizeBinaryArray.

Panics

This function panics iff:

• The data_type’s physical type is not crate::datatypes::PhysicalType::FixedSizeBinary
• The length of values is not a multiple of size in data_type
• the validity’s length is not equal to values.len() / size.

pub fn new_empty(data_type: DataType) -> Self

Returns a new empty FixedSizeBinaryArray.

pub fn new_null(data_type: DataType, length: usize) -> Self

Returns a new null FixedSizeBinaryArray.

pub fn boxed(self) -> Box<dyn Array>

Boxes self into a Box<dyn Array>.

pub fn arced(self) -> Arc<dyn Array>

Boxes self into a std::sync::Arc<dyn Array>.

impl FixedSizeBinaryArray

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

Returns a slice of this FixedSizeBinaryArray.

Implementation

This operation is O(1) as it amounts to increase 3 ref counts.

Panics

panics iff offset + length > self.len()

pub unsafe fn slice_unchecked(&self, offset: usize, length: usize) -> Self

Returns a slice of this FixedSizeBinaryArray.

Implementation

This operation is O(1) as it amounts to increase 3 ref counts.

Safety

The caller must ensure that offset + length <= self.len().

pub fn with_validity(self, validity: Option<Bitmap>) -> Self

Returns this FixedSizeBinaryArray with a new validity.

Panic

This function panics iff validity.len() != self.len().

pub fn set_validity(&mut self, validity: Option<Bitmap>)

Sets the validity of this FixedSizeBinaryArray.

Panics

This function panics iff validity.len() != self.len().

impl FixedSizeBinaryArray

pub fn len(&self) -> usize

Returns the length of this array

pub fn validity(&self) -> Option<&Bitmap>

The optional validity.

pub fn values(&self) -> &Buffer<u8>

Returns the values allocated on this FixedSizeBinaryArray.

pub fn value(&self, i: usize) -> &[u8]

Returns value at position i.

Panic

Panics iff i >= self.len().

pub unsafe fn value_unchecked(&self, i: usize) -> &[u8]

Returns the element at index i as &str

Safety

Assumes that the i < self.len.

pub fn to(self, data_type: DataType) -> Self

Returns a new FixedSizeBinaryArray with a different logical type. This is O(1).

Panics

Panics iff the data_type is not supported for the physical type.

pub fn size(&self) -> usize

Returns the size

impl FixedSizeBinaryArray

pub fn try_from_iter<P: AsRef<[u8]>, I: IntoIterator<Item = Option<P>>>(
    iter: I,
    size: usize
) -> Result<Self, Error>

Creates a FixedSizeBinaryArray from an fallible iterator of optional [u8].

pub fn from_iter<P: AsRef<[u8]>, I: IntoIterator<Item = Option<P>>>(
    iter: I,
    size: usize
) -> Self

Creates a FixedSizeBinaryArray from an iterator of optional [u8].

pub fn from_slice<const N: usize, P: AsRef<[[u8; N]]>>(a: P) -> Self

Creates a FixedSizeBinaryArray from a slice of arrays of bytes

pub fn from<const N: usize, P: AsRef<[Option<[u8; N]>]>>(slice: P) -> Self

Creates a new FixedSizeBinaryArray from a slice of optional [u8].

Trait Implementations

impl Array for FixedSizeBinaryArray

fn as_any(&self) -> &dyn Any

Converts itself to a reference of Any, which enables downcasting to concrete types.

fn as_any_mut(&mut self) -> &mut dyn Any

Converts itself to a mutable reference of Any, which enables mutable downcasting to concrete types.

fn len(&self) -> usize

The length of the Array. Every array has a length corresponding to the number of elements (slots).

fn data_type(&self) -> &DataType

The DataType of the Array. In combination with Array::as_any, this can be used to downcast trait objects (dyn Array) to concrete arrays.

fn validity(&self) -> Option<&Bitmap>

The validity of the Array: every array has an optional Bitmap that, when available specifies whether the array slot is valid or not (null). When the validity is None, all slots are valid.

fn slice(&self, offset: usize, length: usize) -> Box<dyn Array>

Slices the Array, returning a new Box<dyn Array>.

unsafe fn slice_unchecked(&self, offset: usize, length: usize) -> Box<dyn Array>

Slices the Array, returning a new Box<dyn Array>.

fn with_validity(&self, validity: Option<Bitmap>) -> Box<dyn Array>

Clones this Array with a new new assigned bitmap.

fn to_boxed(&self) -> Box<dyn Array>

Clone a &dyn Array to an owned Box<dyn Array>.

fn is_empty(&self) -> bool

whether the array is empty

fn null_count(&self) -> usize

The number of null slots on this Array.

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

Returns whether slot i is null.

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

Returns whether slot i is valid.

impl Clone for FixedSizeBinaryArray

fn clone(&self) -> FixedSizeBinaryArray

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FixedSizeBinaryArray

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

Formats the value using the given formatter.

impl<'a> From<GrowableFixedSizeBinary<'a>> for FixedSizeBinaryArray

fn from(val: GrowableFixedSizeBinary<'a>) -> Self

Converts to this type from the input type.

impl From<MutableFixedSizeBinaryArray> for FixedSizeBinaryArray

fn from(other: MutableFixedSizeBinaryArray) -> Self

Converts to this type from the input type.

impl<'a> IntoIterator for &'a FixedSizeBinaryArray

type Item = Option<&'a [u8]>

The type of the elements being iterated over.

type IntoIter = ZipValidity<&'a [u8], ChunksExact<'a, u8>, BitmapIter<'a>>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl PartialEq<&(dyn Array + 'static)> for FixedSizeBinaryArray

fn eq(&self, other: &&dyn Array) -> 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 PartialEq<FixedSizeBinaryArray> for FixedSizeBinaryArray

fn eq(&self, other: &Self) -> 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.