linera_views::batch

Trait SimplifiedBatch

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pub trait SimplifiedBatch:
    Sized
    + Send
    + Sync
    + Send
    + Sync {
    type Iter: BatchValueWriter<Self>;

    // Required methods
    fn from_batch<S: DeletePrefixExpander>(
        store: S,
        batch: Batch,
    ) -> impl Future<Output = Result<Self, S::Error>> + Send + Sync;
    fn into_iter(self) -> Self::Iter;
    fn len(&self) -> usize;
    fn num_bytes(&self) -> usize;
    fn overhead_size(&self) -> usize;
    fn add_delete(&mut self, key: Vec<u8>);
    fn add_insert(&mut self, key: Vec<u8>, value: Vec<u8>);

    // Provided method
    fn is_empty(&self) -> bool { ... }
}
Expand description

A notion of batch useful for certain computations (notably journaling).

Required Associated Types§

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type Iter: BatchValueWriter<Self>

The iterator type used to process values from the batch.

Required Methods§

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fn from_batch<S: DeletePrefixExpander>( store: S, batch: Batch, ) -> impl Future<Output = Result<Self, S::Error>> + Send + Sync

Creates a simplified batch from a standard one.

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fn into_iter(self) -> Self::Iter

Returns an owning iterator over the values in the batch.

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fn len(&self) -> usize

Returns the total number of entries in the batch.

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fn num_bytes(&self) -> usize

Returns the total number of bytes in the batch.

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fn overhead_size(&self) -> usize

Returns the overhead size of the batch.

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fn add_delete(&mut self, key: Vec<u8>)

Adds the deletion of key to the batch.

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fn add_insert(&mut self, key: Vec<u8>, value: Vec<u8>)

Adds the insertion of a key-value pair to the batch.

Provided Methods§

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fn is_empty(&self) -> bool

Returns true if the batch is empty.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§