pub struct DataLoader<T, C = NoCache> { /* private fields */ }
Available on crate feature dataloader only.
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impl<T> DataLoader<T, NoCache>

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pub fn new<S, R>(loader: T, spawner: S) -> Selfwhere S: Fn(BoxFuture<'static, ()>) -> R + Send + Sync + 'static,

Use Loader to create a DataLoader that does not cache records.

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impl<T, C: CacheFactory> DataLoader<T, C>

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pub fn with_cache<S, R>(loader: T, spawner: S, cache_factory: C) -> Selfwhere S: Fn(BoxFuture<'static, ()>) -> R + Send + Sync + 'static,

Use Loader to create a DataLoader with a cache factory.

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pub fn delay(self, delay: Duration) -> Self

Specify the delay time for loading data, the default is 1ms.

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pub fn max_batch_size(self, max_batch_size: usize) -> Self

pub fn Specify the max batch size for loading data, the default is 1000.

If the keys waiting to be loaded reach the threshold, they are loaded immediately.

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pub fn loader(&self) -> &T

Get the loader.

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pub fn enable_all_cache(&self, enable: bool)

Enable/Disable cache of all loaders.

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pub fn enable_cache<K>(&self, enable: bool)where K: Send + Sync + Hash + Eq + Clone + 'static, T: Loader<K>,

Enable/Disable cache of specified loader.

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pub async fn load_one<K>(&self, key: K) -> Result<Option<T::Value>, T::Error>where K: Send + Sync + Hash + Eq + Clone + 'static, T: Loader<K>,

Use this DataLoader load a data.

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pub async fn load_many<K, I>( &self, keys: I ) -> Result<HashMap<K, T::Value>, T::Error>where K: Send + Sync + Hash + Eq + Clone + 'static, I: IntoIterator<Item = K>, T: Loader<K>,

Use this DataLoader to load some data.

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pub async fn feed_many<K, I>(&self, values: I)where K: Send + Sync + Hash + Eq + Clone + 'static, I: IntoIterator<Item = (K, T::Value)>, T: Loader<K>,

Feed some data into the cache.

**NOTE: If the cache type is NoCache, this function will not take effect. **

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pub async fn feed_one<K>(&self, key: K, value: T::Value)where K: Send + Sync + Hash + Eq + Clone + 'static, T: Loader<K>,

Feed some data into the cache.

**NOTE: If the cache type is NoCache, this function will not take effect. **

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pub fn clear<K>(&self)where K: Send + Sync + Hash + Eq + Clone + 'static, T: Loader<K>,

Clears the cache.

**NOTE: If the cache type is NoCache, this function will not take effect. **

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pub fn get_cached_values<K>(&self) -> HashMap<K, T::Value>where K: Send + Sync + Hash + Eq + Clone + 'static, T: Loader<K>,

Gets all values in the cache.

Auto Trait Implementations§

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impl<T, C = NoCache> !RefUnwindSafe for DataLoader<T, C>

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impl<T, C> Send for DataLoader<T, C>where C: Send, T: Send + Sync,

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impl<T, C> Sync for DataLoader<T, C>where C: Sync, T: Send + Sync,

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impl<T, C> Unpin for DataLoader<T, C>where C: Unpin,

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impl<T, C = NoCache> !UnwindSafe for DataLoader<T, C>

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