Trait tidb_query_datatype::codec::data_type::EvaluableRef

pub trait EvaluableRef<'a>: Clone + Debug + Send + Sync {
    type ChunkedType: ChunkRef<'a, Self> + 'a;
    type EvaluableType: EvaluableRet;

    const EVAL_TYPE: EvalType;

    fn borrow_scalar_value(v: &'a ScalarValue) -> Option<Self>;
    fn borrow_scalar_value_ref(v: ScalarValueRef<'a>) -> Option<Self>;
    fn borrow_vector_value(v: &'a VectorValue) -> Self::ChunkedType;
    fn into_owned_value(self) -> Self::EvaluableType;
    fn from_owned_value(value: &'a Self::EvaluableType) -> Self;
}

Associated Types

type ChunkedType: ChunkRef<'a, Self> + 'a

type EvaluableType: EvaluableRet

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Associated Constants

const EVAL_TYPE: EvalType

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Required methods

fn borrow_scalar_value(v: &'a ScalarValue) -> Option<Self>

Borrows this concrete type from a ScalarValue in the same type; panics if the varient mismatches.

fn borrow_scalar_value_ref(v: ScalarValueRef<'a>) -> Option<Self>

Borrows this concrete type from a ScalarValueRef in the same type; panics if the varient mismatches.

fn borrow_vector_value(v: &'a VectorValue) -> Self::ChunkedType

Borrows a slice of this concrete type from a VectorValue in the same type; panics if the varient mismatches.

fn into_owned_value(self) -> Self::EvaluableType

Convert this reference to owned type

fn from_owned_value(value: &'a Self::EvaluableType) -> Self

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Implementations on Foreign Types

impl<'a, T: Evaluable + EvaluableRet> EvaluableRef<'a> for &'a T

const EVAL_TYPE: EvalType

type ChunkedType = &'a ChunkedVecSized<T>

type EvaluableType = T

fn borrow_scalar_value(v: &'a ScalarValue) -> Option<Self>

fn borrow_scalar_value_ref(v: ScalarValueRef<'a>) -> Option<Self>

fn borrow_vector_value(v: &'a VectorValue) -> &'a ChunkedVecSized<T>

fn into_owned_value(self) -> Self::EvaluableType

fn from_owned_value(value: &'a T) -> Self

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Implementors

impl<'a> EvaluableRef<'a> for EnumRef<'a>

const EVAL_TYPE: EvalType

type EvaluableType = Enum

type ChunkedType = &'a ChunkedVecEnum

fn borrow_scalar_value(v: &'a ScalarValue) -> Option<Self>

fn borrow_scalar_value_ref(v: ScalarValueRef<'a>) -> Option<Self>

fn borrow_vector_value(v: &VectorValue) -> &ChunkedVecEnum

fn into_owned_value(self) -> Self::EvaluableType

fn from_owned_value(value: &'a Self::EvaluableType) -> Self

impl<'a> EvaluableRef<'a> for JsonRef<'a>

const EVAL_TYPE: EvalType

type EvaluableType = Json

type ChunkedType = &'a ChunkedVecJson

fn borrow_scalar_value(v: &'a ScalarValue) -> Option<Self>

fn borrow_scalar_value_ref(v: ScalarValueRef<'a>) -> Option<Self>

fn borrow_vector_value(v: &VectorValue) -> &ChunkedVecJson

fn into_owned_value(self) -> Self::EvaluableType

fn from_owned_value(value: &'a Json) -> Self

impl<'a> EvaluableRef<'a> for SetRef<'a>

const EVAL_TYPE: EvalType

type EvaluableType = Set

type ChunkedType = &'a ChunkedVecSet

fn borrow_scalar_value(v: &'a ScalarValue) -> Option<Self>

fn borrow_scalar_value_ref(v: ScalarValueRef<'a>) -> Option<Self>

fn borrow_vector_value(v: &'a VectorValue) -> &ChunkedVecSet

fn into_owned_value(self) -> Self::EvaluableType

fn from_owned_value(value: &'a Self::EvaluableType) -> Self

impl<'a> EvaluableRef<'a> for BytesRef<'a>

const EVAL_TYPE: EvalType

type EvaluableType = Bytes

type ChunkedType = &'a ChunkedVecBytes

fn borrow_scalar_value(v: &'a ScalarValue) -> Option<Self>

fn borrow_scalar_value_ref(v: ScalarValueRef<'a>) -> Option<Self>

fn borrow_vector_value(v: &'a VectorValue) -> &'a ChunkedVecBytes

fn into_owned_value(self) -> Self::EvaluableType

fn from_owned_value(value: &'a Bytes) -> Self

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