Enum google_api_proto::google::spanner::v1::read_request::OrderBy

#[repr(i32)]
pub enum OrderBy {
    Unspecified = 0,
    PrimaryKey = 1,
    NoOrder = 2,
}

An option to control the order in which rows are returned from a read.

Variants

Unspecified = 0

Default value.

ORDER_BY_UNSPECIFIED is equivalent to ORDER_BY_PRIMARY_KEY.

PrimaryKey = 1

Read rows are returned in primary key order.

In the event that this option is used in conjunction with the partition_token field, the API will return an INVALID_ARGUMENT error.

NoOrder = 2

Read rows are returned in any order.

Implementations

impl OrderBy

pub fn is_valid(value: i32) -> bool

Returns true if value is a variant of OrderBy.

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

👎Deprecated: Use the TryFrom<i32> implementation instead

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

impl OrderBy

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 OrderBy

fn clone(&self) -> OrderBy

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for OrderBy

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

Formats the value using the given formatter.

impl Default for OrderBy

fn default() -> OrderBy

Returns the “default value” for a type.

impl From<OrderBy> for i32

fn from(value: OrderBy) -> i32

Converts to this type from the input type.

impl Hash for OrderBy

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 OrderBy

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

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

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

type Error = UnknownEnumValue

The type returned in the event of a conversion error.

fn try_from(value: i32) -> Result<OrderBy, UnknownEnumValue>

Performs the conversion.

impl Copy for OrderBy

impl Eq for OrderBy

impl StructuralPartialEq for OrderBy