Enum google_api_proto::google::cloud::bigquery::storage::v1beta1::ShardingStrategy

#[repr(i32)]
pub enum ShardingStrategy {
    Unspecified = 0,
    Liquid = 1,
    Balanced = 2,
}

Strategy for distributing data among multiple streams in a read session.

Variants

Unspecified = 0

Same as LIQUID.

Liquid = 1

Assigns data to each stream based on the client’s read rate. The faster the client reads from a stream, the more data is assigned to the stream. In this strategy, it’s possible to read all data from a single stream even if there are other streams present.

Balanced = 2

Assigns data to each stream such that roughly the same number of rows can be read from each stream. Because the server-side unit for assigning data is collections of rows, the API does not guarantee that each stream will return the same number or rows. Additionally, the limits are enforced based on the number of pre-filtering rows, so some filters can lead to lopsided assignments.

Implementations

impl ShardingStrategy

pub fn is_valid(value: i32) -> bool

Returns true if value is a variant of ShardingStrategy.

pub fn from_i32(value: i32) -> Option<ShardingStrategy>

👎Deprecated: Use the TryFrom<i32> implementation instead

Converts an i32 to a ShardingStrategy, or None if value is not a valid variant.

impl ShardingStrategy

pub fn as_str_name(&self) -> &'static str

String value of the enum field names used in the ProtoBuf definition.

The values are not transformed in any way and thus are considered stable (if the ProtoBuf definition does not change) and safe for programmatic use.

pub fn from_str_name(value: &str) -> Option<Self>

Creates an enum from field names used in the ProtoBuf definition.

Trait Implementations

impl Clone for ShardingStrategy

fn clone(&self) -> ShardingStrategy

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ShardingStrategy

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

Formats the value using the given formatter.

impl Default for ShardingStrategy

fn default() -> ShardingStrategy

Returns the “default value” for a type.

impl From<ShardingStrategy> for i32

fn from(value: ShardingStrategy) -> i32

Converts to this type from the input type.

impl Hash for ShardingStrategy

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 ShardingStrategy

fn cmp(&self, other: &ShardingStrategy) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for ShardingStrategy

fn eq(&self, other: &ShardingStrategy) -> 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 PartialOrd for ShardingStrategy

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

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

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

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

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

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

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

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

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 TryFrom<i32> for ShardingStrategy

type Error = DecodeError

The type returned in the event of a conversion error.

fn try_from(value: i32) -> Result<ShardingStrategy, DecodeError>

Performs the conversion.

impl Copy for ShardingStrategy

impl Eq for ShardingStrategy

impl StructuralPartialEq for ShardingStrategy