Enum BatchColumnarFormat

pub enum BatchColumnarFormat {
    Row,
    Both(usize),
    Structured,
}

Column format of a batch.

Variants

Row

Rows are encoded to ProtoRow and then a batch is written down as a Parquet with a schema of (k, v, t, d), where k are the serialized bytes.

Both(usize)

Rows are encoded to ProtoRow and a columnar struct. The batch is written down as Parquet with a schema of (k, k_c, v, v_c, t, d), where k are the serialized bytes and k_c is nested columnar data.

Structured

Rows are encoded to a columnar struct. The batch is written down as Parquet with a schema of (t, d, k_s, v_s), where k_s is nested columnar data.

Implementations

impl BatchColumnarFormat

pub const fn default() -> Self

Returns a default value for BatchColumnarFormat.

pub fn from_str(s: &str) -> Self

Returns a BatchColumnarFormat for a given &str, falling back to a default value if provided &str is invalid.

pub const fn as_str(&self) -> &'static str

Returns a string representation for the BatchColumnarFormat.

pub const fn is_structured(&self) -> bool

Returns if we should encode a Batch in a structured format.

Trait Implementations

impl Arbitrary for BatchColumnarFormat

type Parameters = ()

The type of parameters that arbitrary_with accepts for configuration of the generated Strategy. Parameters must implement Default.

type Strategy = BoxedStrategy<BatchColumnarFormat>

The type of Strategy used to generate values of type Self.

fn arbitrary_with(_args: Self::Parameters) -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self). The strategy is passed the arguments given in args.

fn arbitrary() -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self).

impl Clone for BatchColumnarFormat

fn clone(&self) -> BatchColumnarFormat

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BatchColumnarFormat

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

Formats the value using the given formatter.

impl Display for BatchColumnarFormat

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

Formats the value using the given formatter.

impl Ord for BatchColumnarFormat

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

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

fn partial_cmp(&self, other: &BatchColumnarFormat) -> 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 BatchColumnarFormat

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for BatchColumnarFormat

impl Eq for BatchColumnarFormat

impl StructuralPartialEq for BatchColumnarFormat