Struct NullVTable

pub struct NullVTable;

Trait Implementations

impl ArrayVTable<NullVTable> for NullVTable

fn len(array: &NullArray) -> usize

fn dtype(_array: &NullArray) -> &DType

fn stats(array: &NullArray) -> StatsSetRef<'_>

impl CanonicalVTable<NullVTable> for NullVTable

fn canonicalize(array: &NullArray) -> VortexResult<Canonical>

Returns the canonical representation of the array.

fn append_to_builder( array: &V::Array, builder: &mut dyn ArrayBuilder, ) -> VortexResult<()>

Writes the array into a canonical builder.

impl Debug for NullVTable

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

Formats the value using the given formatter.

impl FilterKernel for NullVTable

fn filter(&self, _array: &Self::Array, mask: &Mask) -> VortexResult<ArrayRef>

Filter an array by the provided predicate.

impl MaskKernel for NullVTable

fn mask(&self, array: &NullArray, _mask: &Mask) -> VortexResult<ArrayRef>

Replace masked values with null in array.

impl MinMaxKernel for NullVTable

fn min_max(&self, _array: &NullArray) -> VortexResult<Option<MinMaxResult>>

impl OperationsVTable<NullVTable> for NullVTable

fn slice( _array: &NullArray, start: usize, stop: usize, ) -> VortexResult<ArrayRef>

Perform a constant-time slice of the array.

fn scalar_at(_array: &NullArray, _index: usize) -> VortexResult<Scalar>

Fetch the scalar at the given index.

impl SerdeVTable<NullVTable> for NullVTable

type Metadata = EmptyMetadata

fn metadata(_array: &NullArray) -> VortexResult<Option<Self::Metadata>>

Exports the metadata for the array.

fn build( _encoding: &NullEncoding, _dtype: &DType, len: usize, _metadata: &Self::Metadata, _buffers: &[ByteBuffer], _children: &dyn ArrayChildren, ) -> VortexResult<NullArray>

Build an array from its given parts.

impl TakeKernel for NullVTable

fn take(&self, array: &NullArray, indices: &dyn Array) -> VortexResult<ArrayRef>

Create a new array by taking the values from the array at the given indices.

impl VTable for NullVTable

type Array = NullArray

type Encoding = NullEncoding

type ArrayVTable = NullVTable

type CanonicalVTable = NullVTable

type OperationsVTable = NullVTable

type ValidityVTable = NullVTable

type VisitorVTable = NullVTable

type ComputeVTable = NotSupported

Optionally enable implementing dynamic compute dispatch for this encoding. Can be disabled by assigning to the NotSupported type.

type EncodeVTable = NotSupported

Optionally enable the EncodeVTable for this encoding. This allows it to partake in compression. Can be disabled by assigning to the NotSupported type.

type SerdeVTable = NullVTable

Optionally enable serde for this encoding by implementing the SerdeVTable trait. Can be disabled by assigning to the NotSupported type.

fn id(_encoding: &Self::Encoding) -> EncodingId

Returns the ID of the encoding.

fn encoding(_array: &Self::Array) -> EncodingRef

Returns the encoding for the array.

impl ValidityVTable<NullVTable> for NullVTable

fn is_valid(_array: &NullArray, _index: usize) -> VortexResult<bool>

fn all_valid(array: &NullArray) -> VortexResult<bool>

fn all_invalid(array: &NullArray) -> VortexResult<bool>

fn validity_mask(array: &NullArray) -> VortexResult<Mask>

fn valid_count(array: &V::Array) -> VortexResult<usize>

Returns the number of valid elements in the array.

fn invalid_count(array: &V::Array) -> VortexResult<usize>

Returns the number of invalid elements in the array.

impl VisitorVTable<NullVTable> for NullVTable

fn visit_buffers(_array: &NullArray, _visitor: &mut dyn ArrayBufferVisitor)

Visit the buffers of the array.

fn visit_children(_array: &NullArray, _visitor: &mut dyn ArrayChildVisitor)

Visit the children of the array.

fn nbuffers(array: &V::Array) -> usize

Count the number of buffers in the array.

fn nchildren(array: &V::Array) -> usize

Count the number of children in the array.