Enum amadeus::data::Decimal

pub enum Decimal {
    Int32 {
        value: [u8; 4],
        precision: i32,
        scale: i32,
    },
    Int64 {
        value: [u8; 8],
        precision: i32,
        scale: i32,
    },
    Bytes {
        value: Vec<u8, Global>,
        precision: i32,
        scale: i32,
    },
}

Rust representation for Decimal values.

This is not a representation of Parquet physical type, but rather a wrapper for DECIMAL logical type, and serves as container for raw parts of decimal values: unscaled value in bytes, precision and scale.

Variants

Int32

Decimal backed by i32.

Fields of Int32

value: [u8; 4]precision: i32scale: i32

Int64

Decimal backed by i64.

Fields of Int64

value: [u8; 8]precision: i32scale: i32

Bytes

Decimal backed by byte array.

Fields of Bytes

value: Vec<u8, Global>precision: i32scale: i32

Implementations

impl Decimal

pub fn from_bytes(value: Vec<u8, Global>, precision: i32, scale: i32) -> Decimal

Creates new decimal value from Vec<u8>.

pub fn data(&self) -> &[u8]

Returns bytes of unscaled value.

pub fn precision(&self) -> i32

Returns decimal precision.

pub fn scale(&self) -> i32

Returns decimal scale.

Trait Implementations

impl AmadeusOrd for Decimal

pub fn amadeus_cmp(&self, other: &Decimal) -> Ordering

impl Clone for Decimal

pub fn clone(&self) -> Decimal

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Data for Decimal

type Vec = Vec<Decimal, Global>

type DynamicType = ()

pub fn new_vec(_type: <Decimal as Data>::DynamicType) -> <Decimal as Data>::Vec

impl Data for Decimal

fn heap(&self) -> usize

fn size(&self) -> usize

fn cast<D: Data>(self) -> Result<D, CastError>

fn eq<D: Data>(self, other: D) -> bool

fn partial_cmp<D: Data>(self, other: D) -> Option<Ordering>

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

impl Debug for Decimal

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Decimal

pub fn deserialize<__D>(
    __deserializer: __D
) -> Result<Decimal, <__D as Deserializer<'de>>::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl Display for Decimal

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

Formats the value using the given formatter.

impl DowncastFrom<Value> for Decimal

pub fn downcast_from(self_: Value) -> Result<Decimal, DowncastError>

impl From<Decimal> for Value

pub fn from(value: Decimal) -> Value

Performs the conversion.

impl FromStr for Decimal

type Err = ParseDecimalError

The associated error which can be returned from parsing.

pub fn from_str(_s: &str) -> Result<Decimal, <Decimal as FromStr>::Err>

Parses a string s to return a value of this type.

impl Hash for Decimal

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl Ord for Decimal

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

This method returns an Ordering between self and other.

#[must_use]

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

Compares and returns the maximum of two values.

#[must_use]

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

Compares and returns the minimum of two values.

#[must_use]

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

Restrict a value to a certain interval.

impl ParquetData for Decimal

type Schema = DecimalSchema

type Reader = impl Reader<Item = Decimal>

type Predicate = Predicate

pub fn parse(
    schema: &Type,
    _predicate: Option<&<Decimal as ParquetData>::Predicate>,
    repetition: Option<Repetition>
) -> Result<(String, <Decimal as ParquetData>::Schema), ParquetError>

Parse a [Type] into Self::Schema, using repetition instead of Type::get_basic_info().repetition(). A repetition of None denotes a root schema.

pub fn reader(
    schema: &<Decimal as ParquetData>::Schema,
    path: &mut Vec<String, Global>,
    def_level: i16,
    rep_level: i16,
    paths: &mut HashMap<ColumnPath, ColumnReader, RandomState>,
    batch_size: usize
) -> <Decimal as ParquetData>::Reader

Builds tree of [Reader]s for the specified [Schema] recursively.

impl PartialEq<Decimal> for Decimal

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialEq<Decimal> for Value

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

This method tests for self and other values to be equal, and is used by ==.

#[must_use]

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

This method tests for !=.

impl PartialOrd<Decimal> for Decimal

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

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

#[must_use]

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

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

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

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

#[must_use]

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

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

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

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

impl PostgresData for Decimal

pub fn query(
    f: &mut Formatter<'_>,
    name: Option<&Names<'_>>
) -> Result<(), Error>

pub fn decode(
    _type_: &Type,
    _buf: Option<&[u8]>
) -> Result<Decimal, Box<dyn Error + 'static + Sync + Send, Global>>

impl SerdeData for Decimal

pub fn serialize<S>(
    &self,
    serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error> where
    S: Serializer, 

pub fn deserialize<'de, D>(
    deserializer: D,
    _schema: Option<SchemaIncomplete>
) -> Result<Decimal, <D as Deserializer<'de>>::Error> where
    D: Deserializer<'de>, 

impl Serialize for Decimal

pub fn serialize<__S>(
    &self,
    __serializer: __S
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl Eq for Decimal

impl StructuralEq for Decimal

impl StructuralPartialEq for Decimal