Enum Decimal 

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

value: [u8; 4]

precision: i32

scale: i32

Int64

Decimal backed by i64.

Fields

value: [u8; 8]

precision: i32

scale: i32

Bytes

Decimal backed by byte array.

Fields

value: Vec<u8>

precision: i32

scale: i32

Implementations

impl Decimal

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

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

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

impl Clone for Decimal

fn clone(&self) -> Decimal

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Data for Decimal

type Vec = Vec<Decimal>

type DynamicType = ()

fn new_vec(_type: Self::DynamicType) -> Self::Vec

impl Debug for Decimal

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

Formats the value using the given formatter.

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

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Decimal

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

Formats the value using the given formatter.

impl DowncastFrom<Value> for Decimal

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

impl From<Decimal> for Value

fn from(value: Decimal) -> Self

Converts to this type from the input type.

impl FromStr for Decimal

type Err = ParseDecimalError

The associated error which can be returned from parsing.

fn from_str(_s: &str) -> Result<Self, Self::Err>

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

impl Hash for Decimal

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 Ord for Decimal

fn cmp(&self, other: &Decimal) -> 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<Decimal> for Value

fn eq(&self, other: &Decimal) -> 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 PartialEq for Decimal

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

fn partial_cmp(&self, other: &Decimal) -> 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 Serialize for Decimal

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Decimal

impl StructuralPartialEq for Decimal