Struct terminus_store::store::NamedGraph [−][src]
A named graph in terminus-store.
Named graphs in terminus-store are basically just a label pointing to a layer. Opening a read transaction to a named graph is just getting hold of the layer it points at, as layers are read-only. Writing to a named graph is just making it point to a new layer.
Implementations
impl NamedGraph
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pub fn name(&self) -> &str
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Returns the label name itself.
pub async fn head(&self) -> Result<Option<StoreLayer>>
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Returns the layer this database points at.
pub async fn set_head(&self, layer: &StoreLayer) -> Result<bool>
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Set the database label to the given layer if it is a valid ancestor, returning false otherwise.
pub async fn force_set_head(&self, layer: &StoreLayer) -> Result<bool>
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Set the database label to the given layer if it is a valid ancestor, returning false otherwise.
Auto Trait Implementations
impl !RefUnwindSafe for NamedGraph
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impl Send for NamedGraph
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impl Sync for NamedGraph
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impl Unpin for NamedGraph
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impl !UnwindSafe for NamedGraph
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> Pointable for T
pub const ALIGN: usize
type Init = T
The type for initializers.
pub unsafe fn init(init: <T as Pointable>::Init) -> usize
pub unsafe fn deref<'a>(ptr: usize) -> &'a T
pub unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T
pub unsafe fn drop(ptr: usize)
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,