Struct ConstantVTable 

pub struct ConstantVTable;

Trait Implementations

impl ArrayVTable<ConstantVTable> for ConstantVTable

fn len(array: &ConstantArray) -> usize

fn dtype(array: &ConstantArray) -> &DType

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

impl BooleanKernel for ConstantVTable

fn boolean( &self, lhs: &ConstantArray, rhs: &dyn Array, op: BooleanOperator, ) -> VortexResult<Option<ArrayRef>>

impl CanonicalVTable<ConstantVTable> for ConstantVTable

fn canonicalize(array: &ConstantArray) -> 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 CastKernel for ConstantVTable

fn cast( &self, array: &ConstantArray, dtype: &DType, ) -> VortexResult<Option<ArrayRef>>

impl CompareKernel for ConstantVTable

fn compare( &self, lhs: &ConstantArray, rhs: &dyn Array, operator: Operator, ) -> VortexResult<Option<ArrayRef>>

impl Debug for ConstantVTable

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

Formats the value using the given formatter.

impl EncodeVTable<ConstantVTable> for ConstantVTable

fn encode( _encoding: &ConstantEncoding, canonical: &Canonical, _like: Option<&ConstantArray>, ) -> VortexResult<Option<ConstantArray>>

Try to encode a canonical array into this encoding.

impl FilterKernel for ConstantVTable

fn filter(&self, array: &ConstantArray, mask: &Mask) -> VortexResult<ArrayRef>

Filter an array by the provided predicate.

impl InvertKernel for ConstantVTable

fn invert(&self, array: &ConstantArray) -> VortexResult<ArrayRef>

Logically invert a boolean array. Converts true -> false, false -> true, null -> null.

impl NumericKernel for ConstantVTable

fn numeric( &self, array: &ConstantArray, rhs: &dyn Array, op: NumericOperator, ) -> VortexResult<Option<ArrayRef>>

impl OperationsVTable<ConstantVTable> for ConstantVTable

fn slice(array: &ConstantArray, start: usize, stop: usize) -> ArrayRef

Perform a constant-time slice of the array.

fn scalar_at(array: &ConstantArray, _index: usize) -> Scalar

Fetch the scalar at the given index.

impl PipelineVTable<ConstantVTable> for ConstantVTable

fn to_operator(array: &ConstantArray) -> VortexResult<Option<Rc<dyn Operator>>>

Convert the current array into a Operator. Returns None if the array cannot be converted to an operator.

impl SerdeVTable<ConstantVTable> for ConstantVTable

type Metadata = EmptyMetadata

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

Exports metadata for an array.

fn build( _encoding: &ConstantEncoding, dtype: &DType, len: usize, _metadata: &Self::Metadata, buffers: &[ByteBuffer], _children: &dyn ArrayChildren, ) -> VortexResult<ConstantArray>

Build an array from components.

impl SumKernel for ConstantVTable

fn sum(&self, array: &ConstantArray) -> VortexResult<Scalar>

Preconditions

impl TakeKernel for ConstantVTable

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

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

impl VTable for ConstantVTable

type Array = ConstantArray

type Encoding = ConstantEncoding

type ArrayVTable = ConstantVTable

type CanonicalVTable = ConstantVTable

type OperationsVTable = ConstantVTable

type ValidityVTable = ConstantVTable

type VisitorVTable = ConstantVTable

type ComputeVTable = NotSupported

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

type EncodeVTable = ConstantVTable

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

type PipelineVTable = ConstantVTable

Optionally enable the PipelineVTable for this encoding. This allows it to partake in pipeline operations.

type SerdeVTable = ConstantVTable

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<ConstantVTable> for ConstantVTable

fn is_valid(array: &ConstantArray, _index: usize) -> VortexResult<bool>

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

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

fn validity_mask(array: &ConstantArray) -> 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<ConstantVTable> for ConstantVTable

fn visit_buffers(array: &ConstantArray, visitor: &mut dyn ArrayBufferVisitor)

Visit the buffers of the array.

fn visit_children(_array: &ConstantArray, _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.