Query

freya::query

Struct Query 

pub struct Query<Q>
where
    Q: QueryCapability,
{ /* private fields */ }
Available on crate feature query only.

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impl<Q> Query<Q>
where Q: QueryCapability,

pub fn new(keys: <Q as QueryCapability>::Keys, query: Q) -> Query<Q>

pub fn enable(self, enabled: bool) -> Query<Q>

Enable or disable this query so that it doesnt automatically run.

Defaults to true.

pub fn stale_time(self, stale_time: Duration) -> Query<Q>

For how long is the data considered stale. If a query subscriber is mounted and the data is stale, it will re run the query otherwise it return the cached data.

Defaults to Duration::ZERO, meaning it is marked stale immediately after it has been used.

pub fn clean_time(self, clean_time: Duration) -> Query<Q>

For how long the data is kept cached after there are no more query subscribers.

Defaults to 5min, meaning it clears automatically after 5 minutes of no subscribers to it.

pub fn interval_time(self, interval_time: Duration) -> Query<Q>

Every how often the query reruns.

Defaults to Duration::MAX, meaning it never re runs automatically.

Note: If multiple subscribers of the same query use different intervals, only the shortest one will be used.

Trait Implementations§

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impl<Q> Clone for Query<Q>
where Q: Clone + QueryCapability, <Q as QueryCapability>::Keys: Clone,

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fn clone(&self) -> Query<Q>

Returns a duplicate of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl<Q> From<GetQuery<Q>> for Query<Q>
where Q: QueryCapability,

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fn from(value: GetQuery<Q>) -> Query<Q>

Converts to this type from the input type.
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impl<Q> Hash for Query<Q>
where Q: QueryCapability,

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fn hash<H>(&self, state: &mut H)
where H: Hasher,

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl<Q> PartialEq for Query<Q>
where Q: PartialEq + QueryCapability, <Q as QueryCapability>::Keys: PartialEq,

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fn eq(&self, other: &Query<Q>) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<Q> Eq for Query<Q>
where Q: QueryCapability,

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impl<Q> StructuralPartialEq for Query<Q>
where Q: QueryCapability,

Auto Trait Implementations§

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impl<Q> Freeze for Query<Q>
where Q: Freeze, <Q as QueryCapability>::Keys: Freeze,

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impl<Q> RefUnwindSafe for Query<Q>
where Q: RefUnwindSafe, <Q as QueryCapability>::Keys: RefUnwindSafe,

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impl<Q> Send for Query<Q>
where Q: Send, <Q as QueryCapability>::Keys: Send,

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impl<Q> Sync for Query<Q>
where Q: Sync, <Q as QueryCapability>::Keys: Sync,

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impl<Q> Unpin for Query<Q>
where Q: Unpin, <Q as QueryCapability>::Keys: Unpin,

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impl<Q> UnwindSafe for Query<Q>
where Q: UnwindSafe, <Q as QueryCapability>::Keys: 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> AnyEq for T
where T: Any + PartialEq,

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fn equals(&self, other: &(dyn Any + 'static)) -> bool

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fn as_any(&self) -> &(dyn Any + 'static)

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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> ComponentProps for T
where T: Any + PartialEq,

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fn changed(&self, other: &(dyn ComponentProps + 'static)) -> bool

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impl<T> Downcast for T
where T: Any,

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Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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Calls U::from(self).

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

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where S: Into<Dispatch>,

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