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Nested

Struct Nested 

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pub struct Nested<E = Root, C = Value> { /* private fields */ }
Expand description

A nested array of objects. E is the enclosing scope (where queries over this array land — Root at the top level, the parent element type when deeper); C is the child scope (the element type). Lifting a child query (Query<C>) through any/all produces a Query<E>.

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impl<E, C> Nested<E, C>

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pub fn at(path: impl Into<String>) -> Self

Build a handle for the nested array at path.

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pub fn any(&self, query: impl AsQuery<C>) -> Query<E>

Parents with at least one element matching query.

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pub fn all(&self, query: impl AsQuery<C>) -> Query<E>

Parents where every element matches query (“no element fails it”).

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pub fn exists(&self) -> Query<E>

The nested array has at least one element.

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pub fn matching(&self, query: impl AsQuery<C>) -> NestedProjection

Shape the returned array: keep elements matching query (with the builder’s sort/size). Pass to crate::Search::filter_nested.

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pub fn project(&self) -> NestedProjection

Like matching with no predicate — every element.

Trait Implementations§

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impl<E: Clone, C: Clone> Clone for Nested<E, C>

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fn clone(&self) -> Nested<E, C>

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl<E: Debug, C: Debug> Debug for Nested<E, C>

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<E, C> Freeze for Nested<E, C>

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impl<E, C> RefUnwindSafe for Nested<E, C>

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impl<E, C> Send for Nested<E, C>

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impl<E, C> Sync for Nested<E, C>

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impl<E, C> Unpin for Nested<E, C>

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impl<E, C> UnsafeUnpin for Nested<E, C>

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impl<E, C> UnwindSafe for Nested<E, C>

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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> 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> From<T> for T

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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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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Sized + Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns Action::Follow if either self or other returns Action::Follow. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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> 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> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more