Struct RowId 

pub struct RowId(/* private fields */);

A row id, 64 bits: the shard in the high 16 bits and a local number in the low 48 bits.

A row keeps its row id for its life. An update keeps it, and a move from the hot store to the cold store keeps it.

Implementations

impl RowId

pub const MAX_LOCAL: u64

The largest local number, 2^48 - 1.

pub const fn new(shard: ShardId, local: u64) -> Option<RowId>

Makes a row id. Returns None if local does not fit in 48 bits.

pub const fn from_bits(bits: u64) -> RowId

The row id with this stored value.

pub const fn bits(self) -> u64

The stored value.

pub const fn shard(self) -> ShardId

The shard.

pub const fn local(self) -> u64

The local number.

Trait Implementations

impl Clone for RowId

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RowId

impl Debug for RowId

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

Formats the value using the given formatter.

impl Display for RowId

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

Formats the value using the given formatter.

impl Eq for RowId

impl FromStr for RowId

type Err = Error

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<RowId, Error>

Parses a string s to return a value of this type.

impl Hash for RowId

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 Ord for RowId

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for RowId

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for RowId

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl StructuralPartialEq for RowId