Enum mz_repr::row::proto_datum::DatumType

source ·
pub enum DatumType {
Show 26 variants Other(i32), Int16(i32), Int32(i32), Int64(i64), Float32(f32), Float64(f64), Bytes(Bytes), String(String), Date(ProtoDate), Time(ProtoNaiveTime), Timestamp(ProtoNaiveDateTime), TimestampTz(ProtoNaiveDateTime), Interval(ProtoInterval), Array(ProtoArray), List(ProtoRow), Dict(ProtoDict), Numeric(ProtoNumeric), Uuid(Vec<u8>), Uint32(u32), Uint8(u32), Uint16(u32), Uint64(u64), MzTimestamp(u64), Range(Box<ProtoRange>), MzAclItem(ProtoMzAclItem), AclItem(ProtoAclItem),
}
Expand description

NB: Proto oneof ids 1..=15 get encoded in 1 byte and so we should reserve them for the datum types we expect to be most popular.

Null, False, and True are all likely to be frequent, but the encoded length is exactly the same if they’re here or in ProtoDatumOther. In general, anything that can be encoded purely as a proto enum variant (i.e. doesn’t have a payload) is better off that way. If we run out of 1-byte encodings of ProtoDatumOther, we can always add ProtoDatumOther2.

Variants§

§

Other(i32)

§

Int16(i32)

§

Int32(i32)

§

Int64(i64)

§

Float32(f32)

§

Float64(f64)

§

Bytes(Bytes)

§

String(String)

Don’t use 9-15 without truly understanding the NB above.

§

Date(ProtoDate)

These get encoded with 2 bytes for the oneof id. It’s a pretty easy and low-debt migration to “bless” one of these into having a 1-byte id (fill in the new field on write, but check if either field is set on read). However, once a 1-byte id is used, it’s gone forever, so we’re conservative in handing them out.

Of these, I’d guess Timestamp and UUID are probably the first ones we’d bless followed by Date and Time.

§

Time(ProtoNaiveTime)

§

Timestamp(ProtoNaiveDateTime)

§

TimestampTz(ProtoNaiveDateTime)

§

Interval(ProtoInterval)

§

Array(ProtoArray)

§

List(ProtoRow)

§

Dict(ProtoDict)

§

Numeric(ProtoNumeric)

§

Uuid(Vec<u8>)

§

Uint32(u32)

§

Uint8(u32)

§

Uint16(u32)

§

Uint64(u64)

§

MzTimestamp(u64)

§

Range(Box<ProtoRange>)

§

MzAclItem(ProtoMzAclItem)

§

AclItem(ProtoAclItem)

Implementations§

source§

impl DatumType

source

pub fn encode(&self, buf: &mut impl BufMut)

Encodes the message to a buffer.

source

pub fn merge( field: &mut Option<DatumType>, tag: u32, wire_type: WireType, buf: &mut impl Buf, ctx: DecodeContext, ) -> Result<(), DecodeError>

Decodes an instance of the message from a buffer, and merges it into self.

source

pub fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

Trait Implementations§

source§

impl Clone for DatumType

source§

fn clone(&self) -> DatumType

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
source§

impl Debug for DatumType

source§

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

Formats the value using the given formatter. Read more
source§

impl PartialEq for DatumType

source§

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
source§

impl StructuralPartialEq for DatumType

Auto Trait Implementations§

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

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

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

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

source§

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

Mutably borrows from an owned value. Read more
source§

impl<T, U> CastInto<U> for T
where U: CastFrom<T>,

source§

fn cast_into(self) -> U

Performs the cast.
source§

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

source§

default 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
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

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

source§

fn from_ref(input: &T) -> T

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

impl<T> FutureExt for T

source§

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

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

fn with_current_context(self) -> WithContext<Self>

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

impl<T> Instrument for T

source§

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

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

fn in_current_span(self) -> Instrumented<Self>

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

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

source§

fn into(self) -> U

Calls U::from(self).

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

source§

impl<T> IntoRequest<T> for T

source§

fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
source§

impl<T, U> OverrideFrom<Option<&T>> for U
where U: OverrideFrom<T>,

source§

fn override_from(self, layer: &Option<&T>) -> U

Override the configuration represented by Self with values from the given layer.
source§

impl<T> Pointable for T

source§

const ALIGN: usize = _

The alignment of pointer.
§

type Init = T

The type for initializers.
source§

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

Initializes a with the given initializer. Read more
source§

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

Dereferences the given pointer. Read more
source§

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

Mutably dereferences the given pointer. Read more
source§

unsafe fn drop(ptr: usize)

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

impl<T> ProgressEventTimestamp for T
where T: Data + Debug + Any,

source§

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

Upcasts this ProgressEventTimestamp to Any. Read more
source§

fn type_name(&self) -> &'static str

Returns the name of the concrete type of this object. Read more
source§

impl<P, R> ProtoType<R> for P
where R: RustType<P>,

source§

impl<T> Same for T

§

type Output = T

Should always be Self
source§

impl<'a, S, T> Semigroup<&'a S> for T
where T: Semigroup<S>,

source§

fn plus_equals(&mut self, rhs: &&'a S)

The method of std::ops::AddAssign, for types that do not implement AddAssign.
source§

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

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

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

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

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

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

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

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

Performs the conversion.
source§

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.
source§

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

Performs the conversion.
source§

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

source§

fn vzip(self) -> V

source§

impl<T> WithSubscriber for T

source§

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
source§

fn with_current_subscriber(self) -> WithDispatch<Self>

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

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

source§

impl<T> Data for T
where T: Clone + 'static,