Struct terminus_store::store::sync::SyncStoreLayerBuilder

pub struct SyncStoreLayerBuilder { /* private fields */ }

A wrapper over a SimpleLayerBuilder, providing a thread-safe sharable interface.

The SimpleLayerBuilder requires one to have a mutable reference to it, and on commit it will be consumed. This builder only requires an immutable reference, and uses a futures-aware read-write lock to synchronize access to it between threads. Also, rather than consuming itself on commit, this wrapper will simply mark itself as having committed, returning errors on further calls.

Implementations

impl SyncStoreLayerBuilder

pub fn with_builder<R, F: FnOnce(&mut Box<dyn LayerBuilder>) -> R>( &self, f: F ) -> Result<R, Error>

pub fn name(&self) -> [u32; 5]

Returns the name of the layer being built.

pub fn add_value_triple(&self, triple: ValueTriple) -> Result<(), Error>

Add a string triple.

pub fn add_id_triple(&self, triple: IdTriple) -> Result<(), Error>

Add an id triple.

pub fn remove_value_triple(&self, triple: ValueTriple) -> Result<(), Error>

Remove a string triple.

pub fn remove_id_triple(&self, triple: IdTriple) -> Result<(), Error>

Remove an id triple.

pub fn committed(&self) -> bool

Returns a boolean result which is true if this builder has been committed, and false otherwise.

pub fn commit_no_load(&self) -> Result<(), Error>

Commit the layer to storage without loading the resulting layer.

pub fn commit(&self) -> Result<SyncStoreLayer, Error>

Commit the layer to storage.

pub fn apply_delta(&self, delta: &SyncStoreLayer) -> Result<(), Error>

Apply all triples added and removed by a layer to this builder.

This is a way to ‘cherry-pick’ a layer on top of another layer, without caring about its history.

pub fn apply_diff(&self, other: &SyncStoreLayer) -> Result<(), Error>

Apply the changes required to change our parent layer into the given layer.

Trait Implementations

impl Clone for SyncStoreLayerBuilder

fn clone(&self) -> SyncStoreLayerBuilder

Returns a copy of the value.

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

Performs copy-assignment from source.