Struct IsNullVTable

pub struct IsNullVTable;

Trait Implementations

impl Debug for IsNullVTable

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

Formats the value using the given formatter.

impl VTable for IsNullVTable

type Expr = IsNullExpr

type Encoding = IsNullExprEncoding

type Metadata = EmptyMetadata

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

Returns the ID of the expr encoding.

fn encoding(_expr: &Self::Expr) -> ExprEncodingRef

Returns the encoding for the expr.

fn metadata(_expr: &Self::Expr) -> Option<Self::Metadata>

Returns the serialize-able metadata for the expr, or None if serialization is not supported.

fn children(expr: &Self::Expr) -> Vec<&ExprRef>

Returns the children of the expr.

fn with_children( _expr: &Self::Expr, children: Vec<ExprRef>, ) -> VortexResult<Self::Expr>

Return a new instance of the expression with the children replaced.

fn build( _encoding: &Self::Encoding, _metadata: &<Self::Metadata as DeserializeMetadata>::Output, children: Vec<ExprRef>, ) -> VortexResult<Self::Expr>

Construct a new VortexExpr from the provided parts.

fn evaluate(expr: &Self::Expr, scope: &Scope) -> VortexResult<ArrayRef>

Evaluate the expression in the given scope.

fn return_dtype(_expr: &Self::Expr, _scope: &DType) -> VortexResult<DType>

Compute the return DType of the expression if evaluated in the given scope.