Struct ScanRange

pub struct ScanRange {
    pub eq_conds: Vec<Datum>,
    pub range: (Bound<ScalarImpl>, Bound<ScalarImpl>),
}

See also PbScanRange

Fields

eq_conds: Vec<Datum>

range: (Bound<ScalarImpl>, Bound<ScalarImpl>)

Implementations

impl ScanRange

pub fn to_protobuf(&self) -> PbScanRange

pub fn is_full_table_scan(&self) -> bool

pub fn has_eq_conds(&self) -> bool

pub fn two_side_bound(&self) -> bool

pub const fn full_table_scan() -> Self

pub fn try_compute_vnode( &self, table_distribution: &TableDistribution, ) -> Option<VirtualNode>

impl ScanRange

pub fn split_small_range(&self, max_gap: u64) -> Option<Vec<Self>>

Precondition: make sure the first order key is int type if you call this method. Optimize small range scan. It turns x between 0 and 5 into x in (0, 1, 2, 3, 4, 5).s

Trait Implementations

impl Clone for ScanRange

fn clone(&self) -> ScanRange

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ScanRange

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

Formats the value using the given formatter.

impl Hash for ScanRange

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ScanRange

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for ScanRange

impl StructuralPartialEq for ScanRange