risingwave_common::types

Enum DataType

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pub enum DataType {
Show 20 variants Boolean, Int16, Int32, Int64, Float32, Float64, Decimal, Date, Varchar, Time, Timestamp, Timestamptz, Interval, Struct(StructType), List(Box<DataType>), Bytea, Jsonb, Serial, Int256, Map(MapType),
}
Expand description

The set of datatypes that are supported in RisingWave.

§Trait implementations

  • EnumDiscriminants generates DataTypeName enum with the same variants, but without data fields.
  • FromStr is only used internally for tests. The generated implementation isn’t efficient, and doesn’t handle whitespaces, etc.

Variants§

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Boolean

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Int16

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Int32

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Int64

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Float32

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Float64

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Decimal

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Date

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Varchar

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Time

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Timestamp

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Timestamptz

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Interval

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Struct(StructType)

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List(Box<DataType>)

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Bytea

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Jsonb

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Serial

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Int256

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Map(MapType)

Implementations§

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impl DataType

Get type information compatible with Postgres type, such as oid, type length.

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pub fn type_len(&self) -> i16

For a fixed-size type, typlen is the number of bytes in the internal representation of the type. But for a variable-length type, typlen is negative. -1 indicates a “varlena” type (one that has a length word), -2 indicates a null-terminated C string.

https://www.postgresql.org/docs/15/catalog-pg-type.html#:~:text=of%20the%20type-,typlen,-int2

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pub fn from_oid(oid: i32) -> Result<Self, UnsupportedOid>

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pub fn to_oid(&self) -> i32

Refer to Self::from_oid

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pub fn pg_name(&self) -> &'static str

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impl DataType

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pub fn create_array_builder(&self, capacity: usize) -> ArrayBuilderImpl

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pub fn prost_type_name(&self) -> PbTypeName

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pub fn to_protobuf(&self) -> PbDataType

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pub fn is_numeric(&self) -> bool

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pub fn is_array(&self) -> bool

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pub fn is_struct(&self) -> bool

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pub fn is_map(&self) -> bool

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pub fn is_int(&self) -> bool

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pub fn window_of(input: &DataType) -> Option<DataType>

Returns the output type of time window function on a given input type.

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pub fn new_struct(fields: Vec<DataType>, field_names: Vec<String>) -> Self

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pub fn new_unnamed_struct(fields: Vec<DataType>) -> Self

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pub fn as_struct(&self) -> &StructType

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pub fn as_map(&self) -> &MapType

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pub fn into_map(self) -> MapType

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pub fn as_list(&self) -> &DataType

Returns the inner element’s type of a list type.

§Panics

Panics if the type is not a list type.

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pub fn unnest_list(&self) -> &Self

Return a new type that removes the outer list, and get the innermost element type.

Use DataType::as_list if you only want the element type of a list.

use risingwave_common::types::DataType::*;
assert_eq!(List(Box::new(Int32)).unnest_list(), &Int32);
assert_eq!(List(Box::new(List(Box::new(Int32)))).unnest_list(), &Int32);
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pub fn array_ndims(&self) -> usize

Return the number of dimensions of this array/list type. Return 0 when this type is not an array/list.

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pub fn equals_datatype(&self, other: &DataType) -> bool

Compares the datatype with another, ignoring nested field names and metadata.

Trait Implementations§

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impl Clone for DataType

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fn clone(&self) -> DataType

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for DataType

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

Formats the value using the given formatter. Read more
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impl Display for DataType

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

Formats the value using the given formatter. Read more
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impl From<&DataType> for DataType

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fn from(proto: &PbDataType) -> DataType

Converts to this type from the input type.
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impl<'_enum> From<&'_enum DataType> for DataTypeName

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fn from(val: &'_enum DataType) -> DataTypeName

Converts to this type from the input type.
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impl From<DataType> for PbDataType

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fn from(data_type: DataType) -> Self

Converts to this type from the input type.
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impl From<DataType> for DataTypeName

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fn from(val: DataType) -> DataTypeName

Converts to this type from the input type.
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impl From<MapType> for DataType

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fn from(value: MapType) -> Self

Converts to this type from the input type.
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impl FromStr for Box<DataType>

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type Err = Box<dyn Error + Sync + Send>

The associated error which can be returned from parsing.
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fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type. Read more
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impl FromStr for DataType

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type Err = ParseError

The associated error which can be returned from parsing.
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fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type. Read more
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impl Hash for DataType

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

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 Ord for DataType

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fn cmp(&self, other: &DataType) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl PartialEq for DataType

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fn eq(&self, other: &DataType) -> 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 PartialOrd for DataType

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fn partial_cmp(&self, other: &DataType) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl TryFrom<DataTypeName> for DataType

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type Error = &'static str

The type returned in the event of a conversion error.
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fn try_from(type_name: DataTypeName) -> Result<Self, Self::Error>

Performs the conversion.
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impl Eq for DataType

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impl StructuralPartialEq for DataType

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impl ZeroHeapSize for DataType

Auto Trait Implementations§

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, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<Q, K> Comparable<K> for Q
where Q: Ord + ?Sized, K: Borrow<Q> + ?Sized,

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fn compare(&self, key: &K) -> Ordering

Compare self to key and return their ordering.
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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<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

Checks if this value is equivalent to the given key. Read more
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impl<T> EstimateSize for T
where T: ZeroHeapSize,

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fn estimated_heap_size(&self) -> usize

The estimated heap size of the current struct in bytes.
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fn estimated_size(&self) -> usize
where Self: Sized,

The estimated total size of the current struct in bytes, including the estimated_heap_size and the size of Self.
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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> FutureExt for T

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

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
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fn with_current_context(self) -> WithContext<Self>

Attaches the current Context to this type, returning a WithContext wrapper. Read more
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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> 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> IntoResult<T> for T

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type Err = Infallible

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

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impl<M> MetricVecRelabelExt for M

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

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

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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.
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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<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> ToString for T
where T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. 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<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
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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
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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

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

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

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impl<T> Key for T
where T: Send + Sync + 'static + Hash + Eq,

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impl<T> LruKey for T
where T: Eq + Send + Hash,

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

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