Struct MapValue

pub struct MapValue(ListValue);

Refer to MapArray for the invariants of a map value.

Tuple Fields

0: ListValue

Implementations

impl MapValue

pub fn inner(&self) -> &ListValue

pub fn into_inner(self) -> ListValue

pub fn from_entries(entries: ListValue) -> Self

Panics

Panics if map invariants are violated.

pub fn try_from_entries(entries: ListValue) -> Result<Self, String>

Returns error if map invariants are violated.

pub fn try_from_kv(key: ListValue, value: ListValue) -> Result<Self, String>

Returns error if map invariants are violated.

pub fn concat(m1: MapRef<'_>, m2: MapRef<'_>) -> Self

Panics

Panics if m1 and m2 have different types.

pub fn insert(m: MapRef<'_>, key: ScalarImpl, value: Datum) -> Self

pub fn delete(m: MapRef<'_>, key: ScalarRefImpl<'_>) -> Self

impl MapValue

pub fn memcmp_deserialize( datatype: &MapType, deserializer: &mut Deserializer<impl Buf>, ) -> Result<Self>

Note: Map should not be used as key. But we don’t want to panic. See MapArray for the semantics. See also the Ord implementation. TODO: ban it in fe https://github.com/risingwavelabs/risingwave/issues/7981

impl MapValue

pub fn from_str_for_test( s: &str, data_type: &MapType, ) -> Result<Self, BoxedError>

Trait Implementations

impl Clone for MapValue

fn clone(&self) -> MapValue

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MapValue

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

Formats the value using the given formatter.

impl Display for MapValue

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

Formats the value using the given formatter.

impl EstimateSize for MapValue

fn estimated_heap_size(&self) -> usize

The estimated heap size of the current struct in bytes.

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.

impl From<MapValue> for ScalarImpl

fn from(val: MapValue) -> Self

Converts to this type from the input type.

impl HashKeyDe for MapValue

fn deserialize(data_type: &DataType, buf: impl Buf) -> Self

impl Ord for MapValue

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

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for MapValue

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for MapValue

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

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl RandValue for MapValue

fn rand_value<R: Rng>(_rand: &mut R) -> Self

impl Scalar for MapValue

type ScalarRefType<'a> = MapRef<'a>

Type for reference of Scalar

fn as_scalar_ref(&self) -> MapRef<'_>

Get a reference to current scalar.

fn to_scalar_value(self) -> ScalarImpl

impl TryFrom<ScalarImpl> for MapValue

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarImpl) -> ArrayResult<Self>

Performs the conversion.

impl Eq for MapValue