Struct MVRegister 

pub struct MVRegister<T: Ord + Clone> { /* private fields */ }

A Multi-Value Register CRDT

Maintains a set of values, each with a unique dot. This allows concurrent writes to coexist until explicitly resolved.

Implementations

impl<T: Ord + Clone> MVRegister<T>

pub fn new() -> Self

Create a new empty Multi-Value Register

pub fn write(&mut self, replica_id: &str, value: T) -> Dot

Write a new value, generating a unique dot

pub fn write_with_dot(&mut self, dot: Dot, value: T)

Write a value with a specific dot (for merging)

pub fn read(&self) -> Vec<&T>

Get all current values

pub fn read_with_dots(&self) -> Vec<(&Dot, &T)>

Get all current values with their dots

pub fn resolve(&mut self, replica_id: &str, value: T) -> Dot

Resolve concurrent values by choosing one (for write-after-read consistency)

pub fn remove_dot(&mut self, dot: &Dot)

Remove a specific dot (value)

pub fn is_empty(&self) -> bool

Check if register is empty

pub fn len(&self) -> usize

Get the number of concurrent values

Trait Implementations

impl<T: Clone + Ord + Clone> Clone for MVRegister<T>

fn clone(&self) -> MVRegister<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug + Ord + Clone> Debug for MVRegister<T>

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

Formats the value using the given formatter.

impl<T: Ord + Clone> Default for MVRegister<T>

fn default() -> Self

Returns the “default value” for a type.

impl<'de, T: Ord + Clone + Deserialize<'de>> Deserialize<'de> for MVRegister<T>

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T: Ord + Clone> Lattice for MVRegister<T>

fn join(&self, other: &Self) -> Self

Join operation: union of all values from both registers This represents the concurrent state after a merge

fn bottom() -> Self

The bottom element (identity for join)

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

Partial order derived from join: a ≤ b iff a ⊔ b = b

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

Check if self ≤ other in the lattice order

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

Join-assign: self = self ⊔ other

impl<T: PartialEq + Ord + Clone> PartialEq for MVRegister<T>

fn eq(&self, other: &MVRegister<T>) -> 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<T: Ord + Clone + Serialize> Serialize for MVRegister<T>

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl<T: Eq + Ord + Clone> Eq for MVRegister<T>

impl<T: Ord + Clone> StructuralPartialEq for MVRegister<T>