Struct NullEncoding

pub struct NullEncoding;

Trait Implementations

impl ComputeVTable for NullEncoding

fn scalar_at_fn(&self) -> Option<&dyn ScalarAtFn<&dyn Array>>

Single item indexing on Vortex arrays.

fn slice_fn(&self) -> Option<&dyn SliceFn<&dyn Array>>

Perform zero-copy slicing of an array.

fn take_fn(&self) -> Option<&dyn TakeFn<&dyn Array>>

Take a set of indices from an array. This often forces allocations and decoding of the receiver.

fn to_arrow_fn(&self) -> Option<&dyn ToArrowFn<&dyn Array>>

Convert the array to an Arrow array of the given type.

fn min_max_fn(&self) -> Option<&dyn MinMaxFn<&dyn Array>>

Compute the min, max of an array.

fn uncompressed_size_fn(&self) -> Option<&dyn UncompressedSizeFn<&dyn Array>>

Approximates the uncompressed size of the array.

fn fill_null_fn(&self) -> Option<&dyn FillNullFn<&dyn Array>>

Fill null values with given desired value. Resulting array is NonNullable

fn is_constant_fn(&self) -> Option<&dyn IsConstantFn<&dyn Array>>

Checks if an array is constant.

fn is_sorted_fn(&self) -> Option<&dyn IsSortedFn<&dyn Array>>

fn like_fn(&self) -> Option<&dyn LikeFn<&dyn Array>>

Perform a SQL LIKE operation on two arrays.

fn optimize_fn(&self) -> Option<&dyn OptimizeFn<&dyn Array>>

Try and optimize the layout of an array.

fn search_sorted_fn(&self) -> Option<&dyn SearchSortedFn<&dyn Array>>

Perform a search over an ordered array.

fn search_sorted_usize_fn(&self) -> Option<&dyn SearchSortedUsizeFn<&dyn Array>>

Perform a search over an ordered array.

fn take_from_fn(&self) -> Option<&dyn TakeFromFn<&dyn Array>>

impl Debug for NullEncoding

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

Formats the value using the given formatter.

impl Encoding for NullEncoding

type Array = NullArray

type Metadata = EmptyMetadata

fn vtable(&'static self) -> VTableRef

where Self: Sized,

impl EncodingVTable for NullEncoding

fn id(&self) -> EncodingId

Return the ID for this encoding implementation.

fn decode( &self, _parts: &ArrayParts, _ctx: &ArrayContext, _dtype: DType, len: usize, ) -> VortexResult<ArrayRef>

fn encode( &self, input: &Canonical, _like: Option<&dyn Array>, ) -> VortexResult<Option<ArrayRef>>

Encode the canonical array into this encoding implementation.

impl FilterKernel for NullEncoding

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

Filter an array by the provided predicate.

impl MaskKernel for NullEncoding

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

Replace masked values with null in array.

impl MinMaxFn<&NullArray> for NullEncoding

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

impl ScalarAtFn<&NullArray> for NullEncoding

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

impl SliceFn<&NullArray> for NullEncoding

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

Return a zero-copy slice of an array, between start (inclusive) and end (exclusive). If start >= stop, returns an empty array of the same type as self. Assumes that start or stop are out of bounds, may panic otherwise.

impl TakeFn<&NullArray> for NullEncoding

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.

fn take_into( &self, array: A, indices: &dyn Array, builder: &mut dyn ArrayBuilder, ) -> VortexResult<()>

Has the same semantics as Self::take but materializes the result into the provided builder.

impl ToArrowFn<&NullArray> for NullEncoding

fn to_arrow( &self, array: &NullArray, data_type: &DataType, ) -> VortexResult<Option<ArrowArrayRef>>

Convert the array to an Arrow array of the given type.

fn preferred_arrow_data_type(&self, _array: A) -> VortexResult<Option<DataType>>

Return the preferred Arrow DataType of the encoding, or None of the canonical DataType for the array’s Vortex vortex_dtype::DType should be used.

impl UncompressedSizeFn<&NullArray> for NullEncoding

fn uncompressed_size(&self, array: &NullArray) -> VortexResult<usize>

Compute the approximated uncompressed size of the array, in bytes.