Struct MutationBatch 

pub struct MutationBatch {
    pub base_revision: Option<u64>,
    pub ops: Vec<Box<dyn MutationOp>>,
    pub touched_keys: Vec<String>,
}

A batch of state mutation operations.

Collects typed key updates and applies them atomically to a Snapshot.

Fields

base_revision: Option<u64>

ops: Vec<Box<dyn MutationOp>>

touched_keys: Vec<String>

Implementations

impl MutationBatch

pub fn new() -> MutationBatch

pub fn with_base_revision(self, revision: u64) -> MutationBatch

pub fn base_revision(&self) -> Option<u64>

pub fn is_empty(&self) -> bool

pub fn update<K>(&mut self, update: <K as StateKey>::Update)

where K: StateKey,

pub fn clear_extension_with( &mut self, key: impl Into<String>, clear: fn(&mut StateMap), )

pub fn extend(&mut self, other: MutationBatch) -> Result<(), StateError>

pub fn op_len(&self) -> usize

pub fn merge_parallel<F>( self, other: MutationBatch, strategy: F, ) -> Result<MutationBatch, StateError>

where F: Fn(&str) -> MergeStrategy,

Merge two batches produced by parallel execution.

• Disjoint keys: always merged.
• Overlapping keys with Commutative strategy: merged (order irrelevant).
• Overlapping keys with Exclusive strategy: returns ParallelMergeConflict.

Trait Implementations

impl Debug for MutationBatch

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

Formats the value using the given formatter.

impl Default for MutationBatch

fn default() -> MutationBatch

Returns the “default value” for a type.