Struct tidb_query_datatype::codec::mysql::set::Set

pub struct Set {
    data: Arc<BufferVec>,
    value: u64,
}

Set stores set.

Inside ChunkedVecSet:

• data stores the real set data.
• value is a bitmap for set data

Take data = ‘ab’ as an example:

Set(‘a’,‘b’) -> 11B Set(‘a’) -> 01B Set(‘’) -> 00B

Fields

data: Arc<BufferVec>

value: u64

Implementations

impl Set

pub fn new(data: Arc<BufferVec>, value: u64) -> Self

pub fn value(&self) -> u64

pub fn as_ref(&self) -> SetRef<'_>

Trait Implementations

impl AsMySQLBool for Set

fn as_mysql_bool(&self, _context: &mut EvalContext) -> Result<bool>

Evaluates into a MySQL logic value.

impl ChunkedVec<Set> for ChunkedVecSet

fn from_slice(slice: &[Option<Set>]) -> Self

fn from_vec(data: Vec<Option<Set>>) -> Self

fn push(&mut self, value: Option<Set>)

fn is_empty(&self) -> bool

fn with_capacity(capacity: usize) -> Self

fn push_data(&mut self, value: Set)

fn push_null(&mut self)

fn len(&self) -> usize

fn truncate(&mut self, len: usize)

fn capacity(&self) -> usize

fn append(&mut self, other: &mut Self)

fn to_vec(&self) -> Vec<Option<Set>>

impl Clone for Set

fn clone(&self) -> Set

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Set

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

Formats the value using the given formatter.

impl Display for Set

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

Formats the value using the given formatter.

impl Eq for Set

impl EvaluableRet for Set

const EVAL_TYPE: EvalType

type ChunkedType = ChunkedVecSet

fn cast_chunk_into_vector_value(vec: ChunkedVecSet) -> VectorValue

Converts a vector of this concrete type into a VectorValue in the same type; panics if the varient mismatches.

impl Ord for Set

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 PartialEq<Set> for Set

fn eq(&self, other: &Self) -> 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 PartialOrd<Set> for Set

fn partial_cmp(&self, right: &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> RawDatumDecoder<Set> for &'a [u8]

fn decode(
    self,
    _field_type: &FieldType,
    _ctx: &mut EvalContext
) -> Result<Option<Set>>

impl VectorValueExt<Set> for VectorValue

fn push(&mut self, v: Option<Set>)

The generic version for VectorValue::push_xxx().