Enum ScalarImpl

pub enum ScalarImpl {
    Int16(i16),
    Int32(i32),
    Int64(i64),
    Int256(Int256),
    Float32(F32),
    Float64(F64),
    Utf8(Box<str>),
    Bool(bool),
    Decimal(Decimal),
    Interval(Interval),
    Date(Date),
    Time(Time),
    Timestamp(Timestamp),
    Timestamptz(Timestamptz),
    Jsonb(JsonbVal),
    Serial(Serial),
    Struct(StructValue),
    List(ListValue),
    Map(MapValue),
    Bytea(Box<[u8]>),
}

ScalarImpl embeds all possible scalars in the evaluation framework.

Note: ScalarImpl 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(Int256)

Float32(F32)

Float64(F64)

Utf8(Box<str>)

Bool(bool)

Decimal(Decimal)

Interval(Interval)

Date(Date)

Time(Time)

Timestamp(Timestamp)

Timestamptz(Timestamptz)

Jsonb(JsonbVal)

Serial(Serial)

Struct(StructValue)

List(ListValue)

Map(MapValue)

Bytea(Box<[u8]>)

Implementations

impl ScalarImpl

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

impl ScalarImpl

pub fn successor(&self) -> Option<Self>

Returns the successor of the current value if it exists.

See also Successor.

The function may return None when:

1. The current value is the maximum value of the type.
2. The successor value of the type is not well-defined.

impl ScalarImpl

pub fn as_int16(&self) -> &i16

Panics

If the scalar is not of the expected type.

pub fn into_int16(self) -> i16

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_int32(&self) -> &i32

Panics

If the scalar is not of the expected type.

pub fn into_int32(self) -> i32

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_int64(&self) -> &i64

Panics

If the scalar is not of the expected type.

pub fn into_int64(self) -> i64

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_int256(&self) -> &Int256

Panics

If the scalar is not of the expected type.

pub fn into_int256(self) -> Int256

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_float32(&self) -> &F32

Panics

If the scalar is not of the expected type.

pub fn into_float32(self) -> F32

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_float64(&self) -> &F64

Panics

If the scalar is not of the expected type.

pub fn into_float64(self) -> F64

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_utf8(&self) -> &Box<str>

Panics

If the scalar is not of the expected type.

pub fn into_utf8(self) -> Box<str>

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_bool(&self) -> &bool

Panics

If the scalar is not of the expected type.

pub fn into_bool(self) -> bool

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_decimal(&self) -> &Decimal

Panics

If the scalar is not of the expected type.

pub fn into_decimal(self) -> Decimal

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_interval(&self) -> &Interval

Panics

If the scalar is not of the expected type.

pub fn into_interval(self) -> Interval

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_date(&self) -> &Date

Panics

If the scalar is not of the expected type.

pub fn into_date(self) -> Date

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_time(&self) -> &Time

Panics

If the scalar is not of the expected type.

pub fn into_time(self) -> Time

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_timestamp(&self) -> &Timestamp

Panics

If the scalar is not of the expected type.

pub fn into_timestamp(self) -> Timestamp

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_timestamptz(&self) -> &Timestamptz

Panics

If the scalar is not of the expected type.

pub fn into_timestamptz(self) -> Timestamptz

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_jsonb(&self) -> &JsonbVal

Panics

If the scalar is not of the expected type.

pub fn into_jsonb(self) -> JsonbVal

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_serial(&self) -> &Serial

Panics

If the scalar is not of the expected type.

pub fn into_serial(self) -> Serial

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_struct(&self) -> &StructValue

Panics

If the scalar is not of the expected type.

pub fn into_struct(self) -> StructValue

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_list(&self) -> &ListValue

Panics

If the scalar is not of the expected type.

pub fn into_list(self) -> ListValue

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_map(&self) -> &MapValue

Panics

If the scalar is not of the expected type.

pub fn into_map(self) -> MapValue

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn as_bytea(&self) -> &Box<[u8]>

Panics

If the scalar is not of the expected type.

pub fn into_bytea(self) -> Box<[u8]>

Panics

If the scalar is not of the expected type.

impl ScalarImpl

pub fn from_binary( bytes: &Bytes, data_type: &DataType, ) -> Result<Self, BoxedError>

Creates a scalar from pgwire “BINARY” format.

The counterpart of to_binary::ToBinary.

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

Creates a scalar from pgwire “TEXT” format.

The counterpart of ToText.

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

impl ScalarImpl

pub fn as_scalar_ref_impl(&self) -> ScalarRefImpl<'_>

Converts ScalarImpl to ScalarRefImpl

impl ScalarImpl

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

Serialize the scalar into the memcomparable format.

pub fn deserialize( ty: &DataType, de: &mut Deserializer<impl Buf>, ) -> Result<Self>

Deserialize the scalar from the memcomparable format.

pub fn as_integral(&self) -> i64

Trait Implementations

impl Clone for ScalarImpl

fn clone(&self) -> ScalarImpl

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ScalarImpl

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

Formats the value using the given formatter.

impl DefaultOrd for ScalarImpl

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

impl DefaultPartialOrd for ScalarImpl

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

impl EstimateSize for ScalarImpl

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<&[u8]> for ScalarImpl

fn from(s: &[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 From<&String> for ScalarImpl

fn from(s: &String) -> Self

Converts to this type from the input type.

impl From<&str> for ScalarImpl

fn from(s: &str) -> Self

Converts to this type from the input type.

impl From<Box<[u8]>> for ScalarImpl

fn from(val: Box<[u8]>) -> Self

Converts to this type from the input type.

impl From<Box<str>> for ScalarImpl

fn from(val: Box<str>) -> Self

Converts to this type from the input type.

impl From<Bytes> for ScalarImpl

fn from(v: Bytes) -> Self

Converts to this type from the input type.

impl From<Date> for ScalarImpl

fn from(val: Date) -> Self

Converts to this type from the input type.

impl From<Decimal> for ScalarImpl

fn from(val: Decimal) -> Self

Converts to this type from the input type.

impl From<Int256> for ScalarImpl

fn from(val: Int256) -> Self

Converts to this type from the input type.

impl From<Interval> for ScalarImpl

fn from(val: Interval) -> Self

Converts to this type from the input type.

impl From<JsonbRef<'_>> for ScalarImpl

fn from(jsonb: JsonbRef<'_>) -> Self

Converts to this type from the input type.

impl From<JsonbVal> for ScalarImpl

fn from(val: JsonbVal) -> Self

Converts to this type from the input type.

impl From<ListRef<'_>> for ScalarImpl

fn from(list: ListRef<'_>) -> Self

Converts to this type from the input type.

impl From<ListValue> for ScalarImpl

fn from(val: ListValue) -> Self

Converts to this type from the input type.

impl From<MapValue> for ScalarImpl

fn from(val: MapValue) -> Self

Converts to this type from the input type.

impl From<OrderedFloat<f32>> for ScalarImpl

fn from(val: F32) -> Self

Converts to this type from the input type.

impl From<OrderedFloat<f64>> for ScalarImpl

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 From<Serial> for ScalarImpl

fn from(val: Serial) -> Self

Converts to this type from the input type.

impl From<String> for ScalarImpl

fn from(s: String) -> Self

Converts to this type from the input type.

impl From<StructValue> for ScalarImpl

fn from(val: StructValue) -> Self

Converts to this type from the input type.

impl From<Time> for ScalarImpl

fn from(val: Time) -> Self

Converts to this type from the input type.

impl From<Timestamp> for ScalarImpl

fn from(val: Timestamp) -> Self

Converts to this type from the input type.

impl From<Timestamptz> for ScalarImpl

fn from(val: Timestamptz) -> Self

Converts to this type from the input type.

impl<T: PrimitiveArrayItemType> From<Vec<Option<T>>> for ScalarImpl

fn from(v: Vec<Option<T>>) -> Self

Converts to this type from the input type.

impl From<Vec<String>> for ScalarImpl

fn from(v: Vec<String>) -> Self

Converts to this type from the input type.

impl<T: PrimitiveArrayItemType> From<Vec<T>> for ScalarImpl

fn from(v: Vec<T>) -> Self

Converts to this type from the input type.

impl From<Vec<u8>> for ScalarImpl

fn from(v: Vec<u8>) -> Self

Converts to this type from the input type.

impl From<bool> for ScalarImpl

fn from(val: bool) -> Self

Converts to this type from the input type.

impl From<char> for ScalarImpl

fn from(c: char) -> Self

Converts to this type from the input type.

impl From<f32> for ScalarImpl

fn from(f: f32) -> Self

Converts to this type from the input type.

impl From<f64> for ScalarImpl

fn from(f: f64) -> Self

Converts to this type from the input type.

impl From<i16> for ScalarImpl

fn from(val: i16) -> Self

Converts to this type from the input type.

impl From<i32> for ScalarImpl

fn from(val: i32) -> Self

Converts to this type from the input type.

impl From<i64> for ScalarImpl

fn from(val: i64) -> Self

Converts to this type from the input type.

impl<'a> FromSql<'a> for ScalarImpl

fn from_sql( ty: &Type, raw: &'a [u8], ) -> Result<Self, Box<dyn Error + Sync + Send>>

Creates a new value of this type from a buffer of data of the specified Postgres Type in its binary format.

fn accepts(ty: &Type) -> bool

Determines if a value of this type can be created from the specified Postgres Type.

fn from_sql_null(ty: &Type) -> Result<Self, Box<dyn Error + Sync + Send>>

Creates a new value of this type from a NULL SQL value.

fn from_sql_nullable( ty: &Type, raw: Option<&'a [u8]>, ) -> Result<Self, Box<dyn Error + Sync + Send>>

A convenience function that delegates to from_sql and from_sql_null depending on the value of raw.

impl Hash for ScalarImpl

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 PartialEq for ScalarImpl

fn eq(&self, other: &ScalarImpl) -> 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 ToSql for ScalarImpl

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 TryFrom<ScalarImpl> for Box<[u8]>

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for Box<str>

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for Date

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for Decimal

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for Int256

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for Interval

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for JsonbVal

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for ListValue

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

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 TryFrom<ScalarImpl> for F32

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for F64

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for Serial

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for String

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for StructValue

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for Time

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for Timestamp

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for Timestamptz

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for bool

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for i16

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for i32

type Error = ArrayError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl TryFrom<ScalarImpl> for i64

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 ScalarImpl

impl !PartialOrd for ScalarImpl

impl StructuralPartialEq for ScalarImpl