Enum ScalarRefImpl

pub enum ScalarRefImpl<'scalar> {
    Int16(i16),
    Int32(i32),
    Int64(i64),
    Int256(Int256Ref<'scalar>),
    Float32(F32),
    Float64(F64),
    Utf8(&'scalar str),
    Bool(bool),
    Decimal(Decimal),
    Interval(Interval),
    Date(Date),
    Time(Time),
    Timestamp(Timestamp),
    Timestamptz(Timestamptz),
    Jsonb(JsonbRef<'scalar>),
    Serial(Serial),
    Struct(StructRef<'scalar>),
    List(ListRef<'scalar>),
    Map(MapRef<'scalar>),
    Bytea(&'scalar [u8]),
}

ScalarRefImpl embeds all possible scalar references in the evaluation framework.

Note: ScalarRefImpl doesn’t contain all information of its DataType, so sometimes they need to be used together. e.g., for Struct, we don’t have the field names in the value.

See for_all_variants for the definition.

Variants

Int16(i16)

Int32(i32)

Int64(i64)

Int256(Int256Ref<'scalar>)

Float32(F32)

Float64(F64)

Utf8(&'scalar str)

Bool(bool)

Decimal(Decimal)

Interval(Interval)

Date(Date)

Time(Time)

Timestamp(Timestamp)

Timestamptz(Timestamptz)

Jsonb(JsonbRef<'scalar>)

Serial(Serial)

Struct(StructRef<'scalar>)

List(ListRef<'scalar>)

Map(MapRef<'scalar>)

Bytea(&'scalar [u8])

Implementations

impl ScalarRefImpl<'_>

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

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_int16(self) -> i16

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_int32(self) -> i32

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_int64(self) -> i64

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_int256(self) -> Int256Ref<'scalar>

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_float32(self) -> F32

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_float64(self) -> F64

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_utf8(self) -> &'scalar str

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_bool(self) -> bool

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_decimal(self) -> Decimal

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_interval(self) -> Interval

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_date(self) -> Date

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_time(self) -> Time

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_timestamp(self) -> Timestamp

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_timestamptz(self) -> Timestamptz

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_jsonb(self) -> JsonbRef<'scalar>

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_serial(self) -> Serial

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_struct(self) -> StructRef<'scalar>

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_list(self) -> ListRef<'scalar>

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_map(self) -> MapRef<'scalar>

Panics

If the scalar is not of the expected type.

impl<'scalar> ScalarRefImpl<'scalar>

pub fn into_bytea(self) -> &'scalar [u8]

Panics

If the scalar is not of the expected type.

impl ScalarRefImpl<'_>

pub fn into_scalar_impl(self) -> ScalarImpl

Converts ScalarRefImpl to ScalarImpl

impl ScalarRefImpl<'_>

pub fn binary_format( &self, data_type: &DataType, ) -> Result<Bytes, ToBinaryError>

pub fn text_format(&self, data_type: &DataType) -> String

pub fn serialize(&self, ser: &mut Serializer<impl BufMut>) -> Result<()>

Serialize the scalar into the memcomparable format.

Trait Implementations

impl<'scalar> Clone for ScalarRefImpl<'scalar>

fn clone(&self) -> ScalarRefImpl<'scalar>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'scalar> Debug for ScalarRefImpl<'scalar>

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

Formats the value using the given formatter.

impl DefaultOrd for ScalarRefImpl<'_>

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

impl DefaultPartialOrd for ScalarRefImpl<'_>

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

impl<'scalar> From<&'scalar [u8]> for ScalarRefImpl<'scalar>

fn from(val: &'scalar [u8]) -> Self

Converts to this type from the input type.

impl<'a> From<&'a ScalarImpl> for ScalarRefImpl<'a>

fn from(scalar: &'a ScalarImpl) -> Self

Converts to this type from the input type.

impl<'scalar> From<&'scalar str> for ScalarRefImpl<'scalar>

fn from(val: &'scalar str) -> Self

Converts to this type from the input type.

impl<'scalar> From<Date> for ScalarRefImpl<'scalar>

fn from(val: Date) -> Self

Converts to this type from the input type.

impl<'scalar> From<Decimal> for ScalarRefImpl<'scalar>

fn from(val: Decimal) -> Self

Converts to this type from the input type.

impl<'scalar> From<Int256Ref<'scalar>> for ScalarRefImpl<'scalar>

fn from(val: Int256Ref<'scalar>) -> Self

Converts to this type from the input type.

impl<'scalar> From<Interval> for ScalarRefImpl<'scalar>

fn from(val: Interval) -> Self

Converts to this type from the input type.

impl<'scalar> From<JsonbRef<'scalar>> for ScalarRefImpl<'scalar>

fn from(val: JsonbRef<'scalar>) -> Self

Converts to this type from the input type.

impl<'scalar> From<ListRef<'scalar>> for ScalarRefImpl<'scalar>

fn from(val: ListRef<'scalar>) -> Self

Converts to this type from the input type.

impl<'scalar> From<MapRef<'scalar>> for ScalarRefImpl<'scalar>

fn from(val: MapRef<'scalar>) -> Self

Converts to this type from the input type.

impl<'scalar> From<OrderedFloat<f32>> for ScalarRefImpl<'scalar>

fn from(val: F32) -> Self

Converts to this type from the input type.

impl<'scalar> From<OrderedFloat<f64>> for ScalarRefImpl<'scalar>

fn from(val: F64) -> Self

Converts to this type from the input type.

impl From<ScalarRefImpl<'_>> for ScalarImpl

fn from(scalar_ref: ScalarRefImpl<'_>) -> Self

Converts to this type from the input type.

impl<'scalar> From<Serial> for ScalarRefImpl<'scalar>

fn from(val: Serial) -> Self

Converts to this type from the input type.

impl<'scalar> From<StructRef<'scalar>> for ScalarRefImpl<'scalar>

fn from(val: StructRef<'scalar>) -> Self

Converts to this type from the input type.

impl<'scalar> From<Time> for ScalarRefImpl<'scalar>

fn from(val: Time) -> Self

Converts to this type from the input type.

impl<'scalar> From<Timestamp> for ScalarRefImpl<'scalar>

fn from(val: Timestamp) -> Self

Converts to this type from the input type.

impl<'scalar> From<Timestamptz> for ScalarRefImpl<'scalar>

fn from(val: Timestamptz) -> Self

Converts to this type from the input type.

impl<'scalar> From<bool> for ScalarRefImpl<'scalar>

fn from(val: bool) -> Self

Converts to this type from the input type.

impl<'scalar> From<i16> for ScalarRefImpl<'scalar>

fn from(val: i16) -> Self

Converts to this type from the input type.

impl<'scalar> From<i32> for ScalarRefImpl<'scalar>

fn from(val: i32) -> Self

Converts to this type from the input type.

impl<'scalar> From<i64> for ScalarRefImpl<'scalar>

fn from(val: i64) -> Self

Converts to this type from the input type.

impl Hash for ScalarRefImpl<'_>

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

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'scalar> PartialEq for ScalarRefImpl<'scalar>

fn eq(&self, other: &ScalarRefImpl<'scalar>) -> 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 SelfAsScalarRef for ScalarRefImpl<'_>

fn as_scalar_ref(&self) -> Self

impl ToBinary for ScalarRefImpl<'_>

fn to_binary_with_type(&self, ty: &DataType) -> Result<Bytes, ToBinaryError>

impl ToSql for ScalarRefImpl<'_>

fn to_sql_checked( &self, ty: &Type, out: &mut BytesMut, ) -> Result<IsNull, Box<dyn Error + Sync + Send>>

An adaptor method used internally by Rust-Postgres.

fn to_sql( &self, ty: &Type, out: &mut BytesMut, ) -> Result<IsNull, Box<dyn Error + Sync + Send>>

where Self: Sized,

Converts the value of self into the binary format of the specified Postgres Type, appending it to out.

fn accepts(_ty: &Type) -> bool

where Self: Sized,

Determines if a value of this type can be converted to the specified Postgres Type.

fn encode_format(&self, _ty: &Type) -> Format

Specify the encode format

impl ToText for ScalarRefImpl<'_>

fn write<W: Write>(&self, f: &mut W) -> Result

Write the text to the writer regardless of its data type

fn write_with_type<W: Write>(&self, ty: &DataType, f: &mut W) -> Result

Write the text to the writer according to its data type

fn to_text_with_type(&self, ty: &DataType) -> String

Convert to text according to its data type

fn to_text(&self) -> String

to_text is a special version of to_text_with_type, it convert the scalar to default type text. E.g. for Int64, it will convert to text as a Int64 type. We should prefer to use to_text_with_type because it’s more clear and readable.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for &'scalar [u8]

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for &'scalar str

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for Date

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for Decimal

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for Int256Ref<'scalar>

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for Interval

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for JsonbRef<'scalar>

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for ListRef<'scalar>

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for MapRef<'scalar>

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for F32

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for F64

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for Serial

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for StructRef<'scalar>

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for Time

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for Timestamp

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for Timestamptz

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for bool

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for i16

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for i32

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> TryFrom<ScalarRefImpl<'scalar>> for i64

type Error = ArrayError

The type returned in the event of a conversion error.

fn try_from(val: ScalarRefImpl<'scalar>) -> ArrayResult<Self>

Performs the conversion.

impl<'scalar> Copy for ScalarRefImpl<'scalar>

impl<'scalar> Eq for ScalarRefImpl<'scalar>

impl !PartialOrd for ScalarRefImpl<'_>

impl<'scalar> StructuralPartialEq for ScalarRefImpl<'scalar>