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Binding

type_bridge

Struct Binding 

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pub struct Binding<S: Schema, M: ThingModel<Schema = S>, Mode: SelectionMode = Exact> { /* private fields */ }
Expand description

One schema/model-branded Copy binding token allocated by a QuerySession. Copying preserves the binding identity; only a fresh session binding call creates a new occurrence.

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impl<S: Schema, M: ThingModel<Schema = S>, Mode: SelectionMode> Binding<S, M, Mode>

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pub fn iid(self, iid: impl Into<String>) -> Predicate<S>

Match this generated binding by one canonical TypeDB thing IID.

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pub fn iid_in( self, iids: impl IntoIterator<Item = impl Into<String>>, ) -> Predicate<S>

Match this generated binding by one of a non-empty bounded IID set.

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pub fn collect(self) -> Collected<S, Self>
where Self: Selectable<S>,

Select this binding as an owned collection per distinct page root, preserving match multiplicity by default.

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impl<S: Schema, M: ThingModel<Schema = S>, Mode: SelectionMode> Binding<S, M, Mode>

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pub fn field<Owner, V>( self, token: FieldToken<Owner, V>, ) -> BoundField<S, Owner, V>
where Owner: Model<Schema = S>, M: NominalUpcast<Owner>,

Resolve one generated owned field against this binding occurrence.

The declaring owner must be this binding’s model or a generated nominal ancestor; unrelated same-spelled owners fail to type-check, and the installed registry re-validates the admission at lowering.

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impl<S: Schema, M: RelationModel<Schema = S> + ThingModel<Schema = S>, Mode: SelectionMode> Binding<S, M, Mode>

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pub fn role<Owner, Players>( self, token: RoleToken<Owner, Players>, ) -> BoundRole<S, Owner, Players>
where Owner: RelationModel<Schema = S>, M: RoleTokenCompatible<Owner, Players>,

Resolve one active generated relation role against this relation binding occurrence. Only relation bindings expose roles; specialized-away ancestor tokens have no generated compatibility evidence.

Trait Implementations§

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impl<S: Schema, M: ThingModel<Schema = S>, Mode: SelectionMode> Clone for Binding<S, M, Mode>

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fn clone(&self) -> Self

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<S: Schema, M: ThingModel<Schema = S>, Mode: SelectionMode> Copy for Binding<S, M, Mode>

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impl<S: Schema, M: ThingModel<Schema = S>, Mode: SelectionMode> Debug for Binding<S, M, Mode>

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

Formats the value using the given formatter. Read more
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impl<S: Schema, M: ThingModel<Schema = S>, Mode: SelectionMode> Eq for Binding<S, M, Mode>

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impl<S: Schema, M: ThingModel<Schema = S>, Mode: SelectionMode> PartialEq for Binding<S, M, Mode>

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fn eq(&self, other: &Self) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl<S: Schema, M: ThingModel<Schema = S> + CompleteModel> Selectable<S> for Binding<S, M, Exact>

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type Output = M

The materialized output type for one selected row.
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impl<S: Schema, M: ThingModel<Schema = S> + SubtypeRootModel> Selectable<S> for Binding<S, M, Subtypes>

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type Output = <M as SubtypeRootModel>::Subtypes

The materialized output type for one selected row.

Auto Trait Implementations§

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impl<S, M, Mode> Freeze for Binding<S, M, Mode>
where PhantomData<fn() -> (S, M, Mode)>: Freeze,

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impl<S, M, Mode> RefUnwindSafe for Binding<S, M, Mode>
where PhantomData<fn() -> (S, M, Mode)>: RefUnwindSafe,

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impl<S, M, Mode> Send for Binding<S, M, Mode>
where PhantomData<fn() -> (S, M, Mode)>: Send,

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impl<S, M, Mode> Sync for Binding<S, M, Mode>
where PhantomData<fn() -> (S, M, Mode)>: Sync,

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impl<S, M, Mode> Unpin for Binding<S, M, Mode>
where PhantomData<fn() -> (S, M, Mode)>: Unpin,

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impl<S, M, Mode> UnsafeUnpin for Binding<S, M, Mode>
where PhantomData<fn() -> (S, M, Mode)>: UnsafeUnpin,

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impl<S, M, Mode> UnwindSafe for Binding<S, M, Mode>
where PhantomData<fn() -> (S, M, Mode)>: UnwindSafe,

Blanket Implementations§

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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<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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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

Compare self to key and return true if they are equal.
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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

Compare self to key and return true if they are equal.
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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> FromRef<T> for T
where T: Clone,

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fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.
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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> IntoEither for T

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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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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
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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impl<T> IntoRequest<T> for T

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fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
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impl<T> Pointable for T

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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

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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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<S, B> SelectedShape<S> for B
where S: Schema, B: Selectable<S>,

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type Output = <B as Selectable<S>>::Output

One fully materialized public row.
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fn __shape_handle( &self, session: &QuerySession<'_, S>, ) -> Result<ShapeHandle, Error>

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fn __materialize_row( &self, session: &QuerySession<'_, S>, row: &MatchRow, ) -> Result<<B as SelectedShape<S>>::Output, Error>

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fn __materialize_projected_row( &self, session: &QuerySession<'_, S>, row: &ProjectedQueryRow, ) -> Result<<B as SelectedShape<S>>::Output, Error>

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impl<S, B> SingularSelectedShape<S> for B
where S: Schema, B: Selectable<S>,

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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 = !

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

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<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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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