risingwave_expr::expr

Enum ValueImpl

pub enum ValueImpl {
    Array(ArrayRef),
    Scalar {
        value: Datum,
        capacity: usize,
    },
}

Expand description

The type-erased return value of an expression.

It can be either an array, or a scalar if all values in the array are the same.

Variants§

Array(ArrayRef)

Scalar

Fields

§value: Datum

§capacity: usize

Implementations§

impl ValueImpl

pub fn len(&self) -> usize

Number of scalars in this value.

pub fn iter(&self) -> impl ExactSizeIterator<Item = DatumRef<'_>> + '_

Iterates over all scalars in this value.

Trait Implementations§

impl Clone for ValueImpl

fn clone(&self) -> ValueImpl

Returns a copy of the value. Read more

1.0.0 · source§

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

Performs copy-assignment from source. Read more

impl Debug for ValueImpl

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

Formats the value using the given formatter. Read more

impl<'a> From<&'a ValueImpl> for ValueRef<'a, BoolArray>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, BytesArray>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, Int256Array>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, JsonbArray>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, ListArray>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, MapArray>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, DateArray>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, DecimalArray>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, IntervalArray>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, F32Array>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, F64Array>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, SerialArray>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, TimeArray>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, TimestampArray>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, TimestamptzArray>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, I16Array>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, I32Array>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, I64Array>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, StructArray>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ValueImpl> for ValueRef<'a, Utf8Array>

Converts a type-erased value to a reference of a specific array type.

fn from(value: &'a ValueImpl) -> Self

Converts to this type from the input type.

impl From<Arc<ArrayImpl>> for ValueImpl

fn from(value: ArrayRef) -> Self

Converts to this type from the input type.

Auto Trait Implementations§

impl Freeze for ValueImpl

impl RefUnwindSafe for ValueImpl

impl Send for ValueImpl

impl Sync for ValueImpl

impl Unpin for ValueImpl

impl UnwindSafe for ValueImpl

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dst. Read more

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

fn into_any(self: Box<T>) -> Box<dyn Any>

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.

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.

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.

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.

impl<T> DowncastSync for T
where T: Any + Send + Sync,

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> FromRef<T> for T
where T: Clone,

fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.

impl<T> FutureExt for T

fn with_context(self, otel_cx: Context) -> WithContext<Self>

Attaches the provided Context to this type, returning a WithContext wrapper. Read more

fn with_current_context(self) -> WithContext<Self>

Attaches the current Context to this type, returning a WithContext wrapper. Read more

impl<T> Instrument for T

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

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

impl<T> Instrument for T

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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

fn into(self) -> U

Calls U::from(self).

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

impl<T> IntoEither for T

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

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

impl<T> IntoRequest<T> for T

fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request

impl<T> IntoResult<T> for T

type Err = Infallible

fn into_result(self) -> Result<T, <T as IntoResult<T>>::Err>

impl<M> MetricVecRelabelExt for M

fn relabel( self, metric_level: MetricLevel, relabel_threshold: MetricLevel, ) -> RelabeledMetricVec<M>

Equivalent to RelabeledMetricVec::with_metric_level.

fn relabel_n( self, metric_level: MetricLevel, relabel_threshold: MetricLevel, relabel_num: usize, ) -> RelabeledMetricVec<M>

Equivalent to RelabeledMetricVec::with_metric_level_relabel_n.

fn relabel_debug_1( self, relabel_threshold: MetricLevel, ) -> RelabeledMetricVec<M>

Equivalent to RelabeledMetricVec::with_metric_level_relabel_n with metric_level set to MetricLevel::Debug and relabel_num set to 1.

impl<T> Pointable for T

const ALIGN: usize = _

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

impl<T> Same for T

type Output = T

Should always be Self

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

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

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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

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

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

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

fn vzip(self) -> V

impl<T> WithSubscriber for T

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

fn with_current_subscriber(self) -> WithDispatch<Self>

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

impl<T> WithSubscriber for T

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

fn with_current_subscriber(self) -> WithDispatch<Self>

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

impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

impl<T> DevConfig for T
where T: Send + Sync + 'static + Debug,

impl<T> LruValue for T
where T: Send + Sync,

impl<T> Value for T
where T: Send + Sync + 'static,