Struct q_compress::data_types::TimestampMicros

pub struct TimestampMicros(_);

A microsecond-precise, timezone-naive, 64-bit timestamp.

All q_compress 64-bit timestamps use a single signed 64 bit integer for the number of units since 1970. This means that the date range can be somewhat limited; e.g. TimestampNanos covers from about year 1678 to 2262. Constructors will panic if the input time lies outside the valid range for this type.

Provides conversions to/from SystemTime.

Implementations

impl TimestampMicros

pub fn new(parts: i64) -> Self

Returns a timestamp with the corresponding parts since the Unix Epoch.

pub fn to_total_parts(self) -> i64

Returns the total number of parts (e.g. microseconds or nanoseconds) since the Unix Epoch.

Trait Implementations

impl Clone for TimestampMicros

fn clone(&self) -> TimestampMicros

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TimestampMicros

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

Formats the value using the given formatter.

impl Default for TimestampMicros

fn default() -> TimestampMicros

Returns the “default value” for a type.

impl Display for TimestampMicros

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

Formats the value using the given formatter.

impl From<TimestampMicros> for SystemTime

fn from(value: TimestampMicros) -> SystemTime

Converts to this type from the input type.

impl NumberLike for TimestampMicros

const HEADER_BYTE: u8 = 15u8

A number from 0-255 that corresponds to the number’s data type.

const PHYSICAL_BITS: usize = 64usize

The number of bits in the number’s uncompressed representation. This must match the number of bytes in the to_bytes and from_bytes implementations. Note that booleans have 8 physical bits (not 1) and timestamps have 96 (not 128).

type Signed = i64

The signed integer this type can convert between to do wrapped subtraction and addition for delta encoding/decoding. Must be another NumberLike with the same Signed and Unsigned as this type; in this way, if we take 7th order deltas, they are ensured to have the same type as 1st order deltas.

type Unsigned = u64

The unsigned integer this type can convert between to do bitwise logic and such.

fn to_unsigned(self) -> u64

Used during compression to convert to an unsigned integer.

fn from_unsigned(off: u64) -> Self

Used during decompression to convert back from an unsigned integer.

fn to_signed(self) -> i64

Used during delta encoding to convert to a signed integer.

fn from_signed(signed: i64) -> Self

Used during delta decoding to convert back from a signed integer.

fn to_bytes(self) -> Vec<u8>

Returns an uncompressed representation for the number.

fn from_bytes(bytes: &[u8]) -> QCompressResult<Self>

Creates a number from an uncompressed representation.

fn num_eq(&self, other: &Self) -> bool

This is no longer important and will go away in a future release.

fn read_from(reader: &mut BitReader<'_>) -> QCompressResult<Self>

Parses an uncompressed representation of the number from the BitReader.

fn write_to(self, writer: &mut BitWriter)

Appends an uncompressed representation of the number to the BitWriter.

impl PartialEq<TimestampMicros> for TimestampMicros

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TryFrom<SystemTime> for TimestampMicros

type Error = QCompressError

The type returned in the event of a conversion error.

fn try_from(system_time: SystemTime) -> QCompressResult<Self>

Performs the conversion.

impl Copy for TimestampMicros

impl Eq for TimestampMicros

impl StructuralEq for TimestampMicros

impl StructuralPartialEq for TimestampMicros