Struct ConstantEncoding

pub struct ConstantEncoding;

The array encoding

Implementations

impl ConstantEncoding

pub const fn vtable() -> VTableRef

Trait Implementations

impl BinaryBooleanFn<ConstantArray> for ConstantEncoding

fn binary_boolean( &self, lhs: &ConstantArray, rhs: &Array, op: BinaryOperator, ) -> VortexResult<Option<Array>>

impl BinaryNumericFn<ConstantArray> for ConstantEncoding

fn binary_numeric( &self, array: &ConstantArray, rhs: &Array, op: BinaryNumericOperator, ) -> VortexResult<Option<Array>>

impl CanonicalVTable<ConstantArray> for ConstantEncoding

fn into_canonical(&self, array: ConstantArray) -> VortexResult<Canonical>

impl CompareFn<ConstantArray> for ConstantEncoding

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

Compares two arrays and returns a new boolean array with the result of the comparison. Or, returns None if comparison is not supported for these arrays.

impl ComputeVTable for ConstantEncoding

fn binary_boolean_fn(&self) -> Option<&dyn BinaryBooleanFn<Array>>

Implementation of binary boolean logic operations.

fn binary_numeric_fn(&self) -> Option<&dyn BinaryNumericFn<Array>>

Implementation of binary numeric operations.

fn compare_fn(&self) -> Option<&dyn CompareFn<Array>>

Binary operator implementation for arrays against other arrays.

fn filter_fn(&self) -> Option<&dyn FilterFn<Array>>

Filter an array with a given mask.

fn invert_fn(&self) -> Option<&dyn InvertFn<Array>>

Invert a boolean array. Converts true -> false, false -> true, null -> null.

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

Single item indexing on Vortex arrays.

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

Perform a search over an ordered array.

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

Perform zero-copy slicing of an array.

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

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

fn cast_fn(&self) -> Option<&dyn CastFn<Array>>

Implemented for arrays that can be casted to different types.

fn fill_forward_fn(&self) -> Option<&dyn FillForwardFn<Array>>

Array function that returns new arrays a non-null value is repeated across runs of nulls.

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

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

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

Perform a SQL LIKE operation on two arrays.

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

Perform a search over an ordered array.

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

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

impl Debug for ConstantEncoding

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

Formats the value using the given formatter.

impl Encoding for ConstantEncoding

const ID: EncodingId

type Array = ConstantArray

type Metadata = EmptyMetadata

impl EncodingVTable for ConstantEncoding

fn id(&self) -> EncodingId

Return the ID for this encoding implementation.

fn as_any(&self) -> &dyn Any

Return a reference to this encoding as a dyn Any for type erasure.

impl FilterFn<ConstantArray> for ConstantEncoding

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

Filter an array by the provided predicate.

impl InvertFn<ConstantArray> for ConstantEncoding

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

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

impl ScalarAtFn<ConstantArray> for ConstantEncoding

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

impl SearchSortedFn<ConstantArray> for ConstantEncoding

fn search_sorted( &self, array: &ConstantArray, value: &Scalar, side: SearchSortedSide, ) -> VortexResult<SearchResult>

fn search_sorted_many( &self, array: &A, values: &[Scalar], side: SearchSortedSide, ) -> VortexResult<Vec<SearchResult>>

Bulk search for many values.

impl SliceFn<ConstantArray> for ConstantEncoding

fn slice( &self, array: &ConstantArray, start: usize, stop: usize, ) -> VortexResult<Array>

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 StatisticsVTable<ConstantArray> for ConstantEncoding

fn compute_statistics( &self, array: &ConstantArray, _stat: Stat, ) -> VortexResult<StatsSet>

Compute the requested statistic. Can return additional stats.

impl TakeFn<ConstantArray> for ConstantEncoding

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

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

unsafe fn take_unchecked( &self, array: &A, indices: &Array, ) -> VortexResult<Array>

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

impl ValidateVTable<ConstantArray> for ConstantEncoding

fn validate(&self, _array: &Array) -> VortexResult<()>

impl ValidityVTable<ConstantArray> for ConstantEncoding

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

Returns whether the index item is valid.

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

Returns whether the array is all valid.

fn validity_mask(&self, array: &ConstantArray) -> VortexResult<Mask>

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

Returns the number of invalid elements in the array.

impl VariantsVTable<ConstantArray> for ConstantEncoding

Constant arrays support all DTypes

fn as_null_array<'a>( &self, array: &'a ConstantArray, ) -> Option<&'a dyn NullArrayTrait>

fn as_bool_array<'a>( &self, array: &'a ConstantArray, ) -> Option<&'a dyn BoolArrayTrait>

fn as_primitive_array<'a>( &self, array: &'a ConstantArray, ) -> Option<&'a dyn PrimitiveArrayTrait>

fn as_utf8_array<'a>( &self, array: &'a ConstantArray, ) -> Option<&'a dyn Utf8ArrayTrait>

fn as_binary_array<'a>( &self, array: &'a ConstantArray, ) -> Option<&'a dyn BinaryArrayTrait>

fn as_struct_array<'a>( &self, array: &'a ConstantArray, ) -> Option<&'a dyn StructArrayTrait>

fn as_list_array<'a>( &self, array: &'a ConstantArray, ) -> Option<&'a dyn ListArrayTrait>

fn as_extension_array<'a>( &self, array: &'a ConstantArray, ) -> Option<&'a dyn ExtensionArrayTrait>

impl VisitorVTable<ConstantArray> for ConstantEncoding

fn accept( &self, _array: &ConstantArray, _visitor: &mut dyn ArrayVisitor, ) -> VortexResult<()>