Enum tidb_query_datatype::codec::data_type::ScalarValueRef

pub enum ScalarValueRef<'a> {
    Int(Option<&'a Int>),
    Real(Option<&'a Real>),
    Decimal(Option<&'a Decimal>),
    Bytes(Option<BytesRef<'a>>),
    DateTime(Option<&'a DateTime>),
    Duration(Option<&'a Duration>),
    Json(Option<JsonRef<'a>>),
    Enum(Option<EnumRef<'a>>),
    Set(Option<SetRef<'a>>),
}

A scalar value reference container. Can be created from ScalarValue or VectorValue.

Variants

Int(Option<&'a Int>)

Real(Option<&'a Real>)

Decimal(Option<&'a Decimal>)

Bytes(Option<BytesRef<'a>>)

DateTime(Option<&'a DateTime>)

Duration(Option<&'a Duration>)

Json(Option<JsonRef<'a>>)

Enum(Option<EnumRef<'a>>)

Set(Option<SetRef<'a>>)

Implementations

impl<'a> ScalarValueRef<'a>

pub fn to_owned(self) -> ScalarValue

pub fn eval_type(&self) -> EvalType

pub fn encode(
    &self,
    field_type: &FieldType,
    ctx: &mut EvalContext,
    output: &mut Vec<u8>
) -> Result<()>

Encodes into binary format.

pub fn encode_sort_key(
    &self,
    field_type: &FieldType,
    ctx: &mut EvalContext,
    output: &mut Vec<u8>
) -> Result<()>

pub fn cmp_sort_key(
    &self,
    other: &ScalarValueRef<'_>,
    field_type: &FieldType
) -> Result<Ordering>

impl<'a> ScalarValueRef<'a>

pub fn as_int(&'a self) -> Option<&'a Int>

impl<'a> ScalarValueRef<'a>

pub fn as_real(&'a self) -> Option<&'a Real>

impl<'a> ScalarValueRef<'a>

pub fn as_decimal(&'a self) -> Option<&'a Decimal>

impl<'a> ScalarValueRef<'a>

pub fn as_date_time(&'a self) -> Option<&'a DateTime>

impl<'a> ScalarValueRef<'a>

pub fn as_duration(&'a self) -> Option<&'a Duration>

impl<'a> ScalarValueRef<'a>

pub fn as_json(&'a self) -> Option<JsonRef<'a>>

impl<'a> ScalarValueRef<'a>

pub fn as_bytes(&'a self) -> Option<BytesRef<'a>>

Trait Implementations

impl<'a> Clone for ScalarValueRef<'a>

fn clone(&self) -> ScalarValueRef<'a>

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Copy for ScalarValueRef<'a>

impl<'a> Debug for ScalarValueRef<'a>

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

Formats the value using the given formatter.

impl<'a> Eq for ScalarValueRef<'a>

impl<'a> Ord for ScalarValueRef<'a>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl<'a> PartialEq<ScalarValue> for ScalarValueRef<'a>

fn eq(&self, other: &ScalarValue) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]pub fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a> PartialEq<ScalarValueRef<'a>> for ScalarValueRef<'a>

fn eq(&self, other: &ScalarValueRef<'a>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &ScalarValueRef<'a>) -> bool

This method tests for !=.

impl<'a> PartialEq<ScalarValueRef<'a>> for ScalarValue

fn eq(&self, other: &ScalarValueRef<'_>) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]pub fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<'a> PartialOrd<ScalarValueRef<'a>> for ScalarValueRef<'a>

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use]pub fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]pub fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]pub fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]pub fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'a> StructuralEq for ScalarValueRef<'a>

impl<'a> StructuralPartialEq for ScalarValueRef<'a>