Trait Db 

pub trait Db {
    // Required methods
    fn query<Q: Query>(&self, query: Q) -> Result<Arc<Q::Output>, QueryError>;
    fn asset<K: AssetKey>(
        &self,
        key: K,
    ) -> Result<AssetLoadingState<K>, QueryError>;
    fn list_queries<Q: Query>(&self) -> Vec<Q>;
    fn list_asset_keys<K: AssetKey>(&self) -> Vec<K>;
}

Database trait that provides query execution and asset access.

This trait is implemented by both QueryRuntime and QueryContext, allowing queries to work with either.

• QueryRuntime::query() / QueryRuntime::asset(): No dependency tracking
• QueryContext::query() / QueryContext::asset(): With dependency tracking

Required Methods

fn query<Q: Query>(&self, query: Q) -> Result<Arc<Q::Output>, QueryError>

Execute a query, returning the cached result if available.

fn asset<K: AssetKey>(&self, key: K) -> Result<AssetLoadingState<K>, QueryError>

Access an asset by key.

fn list_queries<Q: Query>(&self) -> Vec<Q>

List all executed queries of a specific type.

fn list_asset_keys<K: AssetKey>(&self) -> Vec<K>

List all resolved asset keys of a specific type.

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

impl<'a, T: Tracer> Db for QueryContext<'a, T>

impl<T: Tracer> Db for QueryRuntime<T>