Struct PcoVTable 

pub struct PcoVTable;

Implementations

impl PcoVTable

pub const ID: ArrayId

Trait Implementations

impl BaseArrayVTable<PcoVTable> for PcoVTable

fn len(array: &PcoArray) -> usize

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

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

fn array_hash<H: Hasher>(array: &PcoArray, state: &mut H, precision: Precision)

fn array_eq(array: &PcoArray, other: &PcoArray, precision: Precision) -> bool

impl CastReduce for PcoVTable

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

impl Debug for PcoVTable

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

Formats the value using the given formatter.

impl OperationsVTable<PcoVTable> for PcoVTable

fn scalar_at(array: &PcoArray, index: usize) -> VortexResult<Scalar>

Fetch the scalar at the given index.

impl SliceReduce for PcoVTable

fn slice( array: &Self::Array, range: Range<usize>, ) -> VortexResult<Option<ArrayRef>>

Slice an array with the provided range without reading buffers.

impl VTable for PcoVTable

type Array = PcoArray

type Metadata = ProstMetadata<PcoMetadata>

type ArrayVTable = PcoVTable

type OperationsVTable = PcoVTable

type ValidityVTable = ValidityVTableFromValiditySliceHelper

type VisitorVTable = PcoVTable

fn id(_array: &Self::Array) -> ArrayId

Returns the ID of the array.

fn metadata(array: &PcoArray) -> VortexResult<Self::Metadata>

Exports metadata for an array.

fn serialize(metadata: Self::Metadata) -> VortexResult<Option<Vec<u8>>>

Serialize metadata into a byte buffer for IPC or file storage. Return None if the array cannot be serialized.

fn deserialize( bytes: &[u8], _dtype: &DType, _len: usize, _buffers: &[BufferHandle], _session: &VortexSession, ) -> VortexResult<Self::Metadata>

Deserialize array metadata from a byte buffer.

fn build( dtype: &DType, len: usize, metadata: &Self::Metadata, buffers: &[BufferHandle], children: &dyn ArrayChildren, ) -> VortexResult<PcoArray>

Build an array from components.

fn with_children( array: &mut Self::Array, children: Vec<ArrayRef>, ) -> VortexResult<()>

Replaces the children in array with children. The count must be the same and types of children must be expected.

fn execute( array: &Self::Array, _ctx: &mut ExecutionCtx, ) -> VortexResult<ArrayRef>

Execute this array to produce an ArrayRef.

fn reduce_parent( array: &Self::Array, parent: &ArrayRef, child_idx: usize, ) -> VortexResult<Option<ArrayRef>>

Attempt to perform a reduction of the parent of this array.

fn append_to_builder( array: &Self::Array, builder: &mut dyn ArrayBuilder, ctx: &mut ExecutionCtx, ) -> Result<(), VortexError>

Writes the array into a canonical builder.

fn execute_parent( array: &Self::Array, parent: &Arc<dyn Array>, child_idx: usize, ctx: &mut ExecutionCtx, ) -> Result<Option<Arc<dyn Array>>, VortexError>

Attempt to execute the parent of this array.

fn reduce(array: &Self::Array) -> Result<Option<Arc<dyn Array>>, VortexError>

Attempt to reduce the array to a more simple representation.

impl VisitorVTable<PcoVTable> for PcoVTable

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

Visit the buffers of the array.

fn nbuffers(array: &PcoArray) -> usize

Count the number of buffers in the array.

fn visit_children(array: &PcoArray, visitor: &mut dyn ArrayChildVisitor)

Visit the children of the array.

fn nchildren(array: &PcoArray) -> usize

Count the number of children in the array.

fn buffer_names(array: &<V as VTable>::Array) -> Vec<String>

Return the names of the buffers in the array.

fn visit_children_unnamed( array: &<V as VTable>::Array, visitor: &mut dyn ArrayChildVisitorUnnamed, )

Visit the children of the array without names.

fn nth_child(array: &<V as VTable>::Array, idx: usize) -> Option<Arc<dyn Array>>

Get the nth child of the array without allocating a Vec.