Trait tidb_query_expr::impl_cast::CastAnyAsJson_Fn

trait CastAnyAsJson_Fn<From: ConvertTo<Json> + Evaluable + EvaluableRet> {
    fn eval(
        self, 
        ctx: &mut EvalContext, 
        output_rows: usize, 
        args: &[RpnStackNode<'_>], 
        extra: &mut RpnFnCallExtra<'_>, 
        metadata: &(dyn Any + Send)
    ) -> Result<VectorValue>;
}

Required methods

fn eval(
    self,
    ctx: &mut EvalContext,
    output_rows: usize,
    args: &[RpnStackNode<'_>],
    extra: &mut RpnFnCallExtra<'_>,
    metadata: &(dyn Any + Send)
) -> Result<VectorValue>

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Implementors

impl<'arg_, From: ConvertTo<Json> + Evaluable + EvaluableRet, Arg0_: RpnFnArg<Type = Option<&'arg_ From>>> CastAnyAsJson_Fn<From> for Arg<Arg0_, Null>

default fn eval(
    self,
    ctx: &mut EvalContext,
    output_rows: usize,
    args: &[RpnStackNode<'_>],
    extra: &mut RpnFnCallExtra<'_>,
    metadata: &(dyn Any + Send)
) -> Result<VectorValue>

impl<From: ConvertTo<Json> + Evaluable + EvaluableRet, D_: ArgDef> CastAnyAsJson_Fn<From> for D_

default fn eval(
    self,
    ctx: &mut EvalContext,
    output_rows: usize,
    args: &[RpnStackNode<'_>],
    extra: &mut RpnFnCallExtra<'_>,
    metadata: &(dyn Any + Send)
) -> Result<VectorValue>

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