Struct MerkleizedBatch 

pub struct MerkleizedBatch<F: Family, D: Digest, K: Key, V: ValueEncoding> { /* private fields */ }

A speculative batch of operations whose root digest has been computed, in contrast to UnmerkleizedBatch.

Implementations

impl<F: Family, D: Digest, K: Key, V: ValueEncoding> MerkleizedBatch<F, D, K, V>

where Operation<K, V>: EncodeShared,

pub fn root(&self) -> D

Return the speculative root.

pub async fn get<E, C, H, T>( &self, key: &K, db: &Immutable<F, E, K, V, C, H, T>, ) -> Result<Option<V::Value>, Error<F>>

where E: Context, C: Mutable<Item = Operation<K, V>> + Persistable<Error = JournalError>, C::Item: EncodeShared, H: CHasher<Digest = D>, T: Translator,

Read through: local diff -> ancestor diffs -> committed DB.

pub fn new_batch<H>(self: &Arc<Self>) -> UnmerkleizedBatch<F, H, K, V>

where H: CHasher<Digest = D>,

Create a new speculative batch of operations with this batch as its parent.

All uncommitted ancestors in the chain must be kept alive until the child (or any descendant) is merkleized. Dropping an uncommitted ancestor causes data loss detected at apply_batch time.

Trait Implementations

impl<F: Clone + Family, D: Clone + Digest, K: Clone + Key, V: Clone + ValueEncoding> Clone for MerkleizedBatch<F, D, K, V>

where V::Value: Clone,

fn clone(&self) -> MerkleizedBatch<F, D, K, V>

Returns a duplicate of the value.

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

Performs copy-assignment from source.