Struct MaelstromKey

pub struct MaelstromKey(u64);

Key of the persist shard used by Transactor

Tuple Fields

0: u64

Trait Implementations

impl Clone for MaelstromKey

fn clone(&self) -> MaelstromKey

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Codec for MaelstromKey

type Storage = ()

A type used with Self::decode_from for allocation reuse. Set to () if unnecessary.

type Schema = MaelstromKeySchema

The type of the associated schema for Self.

fn codec_name() -> String

Name of the codec.

fn encode<B>(&self, buf: &mut B)

where B: BufMut,

Encode a key or value for permanent storage.

fn decode<'a>( buf: &'a [u8], _schema: &MaelstromKeySchema, ) -> Result<Self, String>

Decode a key or value previous encoded with this codec’s Codec::encode.

fn encode_schema(_schema: &Self::Schema) -> Bytes

Encode a schema for permanent storage.

fn decode_schema(buf: &Bytes) -> Self::Schema

Decode a schema previous encoded with this codec’s Self::encode_schema.

fn encode_to_vec(&self) -> Vec<u8>

Encode a key or value to a Vec.

fn decode_from<'a>( &mut self, buf: &'a [u8], _storage: &mut Option<Self::Storage>, schema: &Self::Schema, ) -> Result<(), String>

An alternate form of Self::decode which enables amortizing allocs.

fn validate(_val: &Self, _schema: &Self::Schema) -> Result<(), String>

Checks that the given value matches the provided schema.

impl Debug for MaelstromKey

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

Formats the value using the given formatter.

impl Default for MaelstromKey

fn default() -> MaelstromKey

Returns the “default value” for a type.

impl Hash for MaelstromKey

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 MaelstromKey

fn cmp(&self, other: &MaelstromKey) -> 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 MaelstromKey

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

fn partial_cmp(&self, other: &MaelstromKey) -> 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 Schema2<MaelstromKey> for MaelstromKeySchema

type ArrowColumn = PrimitiveArray<UInt64Type>

The type of column we decode from, and encoder will finish into.

type Statistics = NoneStats

Statistics we collect for a schema of this type.

type Decoder = SimpleColumnarDecoder<MaelstromKey>

Type that is able to decode values of T from Self::ArrowColumn.

type Encoder = SimpleColumnarEncoder<MaelstromKey>

Type that is able to encoder values of T.

fn encoder(&self) -> Result<Self::Encoder, Error>

Returns a type that can encode values of T.

fn decoder(&self, col: Self::ArrowColumn) -> Result<Self::Decoder, Error>

Returns a type that is able to decode instances of T from the provider column.

fn decoder_any(&self, col: &dyn Array) -> Result<Self::Decoder, Error>

Returns a type that is able to decode instances of T from a type erased arrow::array::Array, erroring if the provided array is not Self::ArrowColumn.

impl SimpleColumnarData for MaelstromKey

type ArrowBuilder = PrimitiveBuilder<UInt64Type>

Type of arrow builder that we encode data into.

type ArrowColumn = PrimitiveArray<UInt64Type>

Type of arrow array the we decode data from.

fn goodbytes(builder: &Self::ArrowBuilder) -> usize

The number of actual data bytes this item represents.

fn push(&self, builder: &mut Self::ArrowBuilder)

Encode self into builder.

fn push_null(builder: &mut Self::ArrowBuilder)

Encode a null value into builder.

fn read(&mut self, idx: usize, column: &Self::ArrowColumn)

Decode an instance of self from column.

impl Eq for MaelstromKey

impl StructuralPartialEq for MaelstromKey