Enum OrderBy 

#[non_exhaustive]
pub enum OrderBy {
    Unspecified,
    PrimaryKey,
    NoOrder,
    UnknownValue(UnknownValue),
}

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

Working with unknown values

This enum is defined as #[non_exhaustive] because Google Cloud may add additional enum variants at any time. Adding new variants is not considered a breaking change. Applications should write their code in anticipation of:

• New values appearing in future releases of the client library, and
• New values received dynamically, without application changes.

Please consult the Working with enums section in the user guide for some guidelines.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Unspecified

Default value.

ORDER_BY_UNSPECIFIED is equivalent to ORDER_BY_PRIMARY_KEY.

PrimaryKey

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 returns an INVALID_ARGUMENT error.

NoOrder

Read rows are returned in any order.

UnknownValue(UnknownValue)

If set, the enum was initialized with an unknown value.

Applications can examine the value using OrderBy::value or OrderBy::name.

Implementations

impl OrderBy

pub fn value(&self) -> Option<i32>

Gets the enum value.

Returns None if the enum contains an unknown value deserialized from the string representation of enums.

pub fn name(&self) -> Option<&str>

Gets the enum value as a string.

Returns None if the enum contains an unknown value deserialized from the integer representation of enums.

Trait Implementations

impl Clone for OrderBy

fn clone(&self) -> OrderBy

Returns a duplicate 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() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for OrderBy

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for OrderBy

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

Formats the value using the given formatter.

impl From<&str> for OrderBy

fn from(value: &str) -> Self

Converts to this type from the input type.

impl From<i32> for OrderBy

fn from(value: i32) -> Self

Converts to this type from the input type.

impl PartialEq for OrderBy

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

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for OrderBy