json_ld_core::loader::chain

Struct ChainLoader

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pub struct ChainLoader<L1, L2>(/* private fields */);
Expand description
  • ChainLoader: loads document from the first loader, otherwise falls back to the second one.

This can be useful for combining, for example, an FsLoader for loading some contexts from a local cache, and a ReqwestLoader for loading any other context from the web.

Note that it is also possible to nest several ChainLoaders, to combine more than two loaders.

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impl<L1, L2> ChainLoader<L1, L2>

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pub fn new(l1: L1, l2: L2) -> Self

Build a new chain loader

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impl<L1, L2> Loader for ChainLoader<L1, L2>
where L1: Loader, L2: Loader,

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async fn load(&self, url: &Iri) -> LoadingResult<IriBuf>

Loads the document behind the given IRI.
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async fn load_with<V>( &self, vocabulary: &mut V, url: V::Iri, ) -> LoadingResult<V::Iri>
where V: IriVocabularyMut, V::Iri: Clone + Eq + Hash,

Loads the document behind the given IRI, using the given vocabulary.

Auto Trait Implementations§

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impl<L1, L2> Freeze for ChainLoader<L1, L2>
where L1: Freeze, L2: Freeze,

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impl<L1, L2> RefUnwindSafe for ChainLoader<L1, L2>
where L1: RefUnwindSafe, L2: RefUnwindSafe,

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impl<L1, L2> Send for ChainLoader<L1, L2>
where L1: Send, L2: Send,

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impl<L1, L2> Sync for ChainLoader<L1, L2>
where L1: Sync, L2: Sync,

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impl<L1, L2> Unpin for ChainLoader<L1, L2>
where L1: Unpin, L2: Unpin,

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impl<L1, L2> UnwindSafe for ChainLoader<L1, L2>
where L1: UnwindSafe, L2: UnwindSafe,

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> At for T

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fn at<M>(self, metadata: M) -> Meta<T, M>

Wraps self inside a Meta<Self, M> using the given metadata. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> BorrowStripped for T

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fn stripped(&self) -> &Stripped<T>

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impl<T> BorrowUnordered for T

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fn as_unordered(&self) -> &Unordered<T>

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, C> FromWithContext<T, C> for T

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fn from_with(value: T, _context: &C) -> T

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U, C> IntoWithContext<U, C> for T
where U: FromWithContext<T, C>,

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fn into_with(self, context: &C) -> U

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U, C> TryFromWithContext<U, C> for T
where U: IntoWithContext<T, C>,

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type Error = Infallible

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fn try_from_with( value: U, context: &C, ) -> Result<T, <T as TryFromWithContext<U, C>>::Error>

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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T, U, C> TryIntoWithContext<U, C> for T
where U: TryFromWithContext<T, C>,

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type Error = <U as TryFromWithContext<T, C>>::Error

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fn try_into_with( self, context: &C, ) -> Result<U, <T as TryIntoWithContext<U, C>>::Error>

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impl<T> WithContext for T
where T: ?Sized,

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fn with<C>(&self, context: C) -> Contextual<&T, C>

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fn into_with<C>(self, context: C) -> Contextual<T, C>