Enum google_api_proto::google::firestore::admin::v1::database::ConcurrencyMode

#[repr(i32)]
pub enum ConcurrencyMode {
    Unspecified = 0,
    Optimistic = 1,
    Pessimistic = 2,
    OptimisticWithEntityGroups = 3,
}

The type of concurrency control mode for transactions.

Variants

Unspecified = 0

Not used.

Optimistic = 1

Use optimistic concurrency control by default. This mode is available for Cloud Firestore databases.

Pessimistic = 2

Use pessimistic concurrency control by default. This mode is available for Cloud Firestore databases.

This is the default setting for Cloud Firestore.

OptimisticWithEntityGroups = 3

Use optimistic concurrency control with entity groups by default.

This is the only available mode for Cloud Datastore.

This mode is also available for Cloud Firestore with Datastore Mode but is not recommended.

Implementations

impl ConcurrencyMode

pub fn is_valid(value: i32) -> bool

Returns true if value is a variant of ConcurrencyMode.

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

👎Deprecated: Use the TryFrom<i32> implementation instead

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

impl ConcurrencyMode

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 ConcurrencyMode

fn clone(&self) -> ConcurrencyMode

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ConcurrencyMode

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

Formats the value using the given formatter.

impl Default for ConcurrencyMode

fn default() -> ConcurrencyMode

Returns the “default value” for a type.

impl From<ConcurrencyMode> for i32

fn from(value: ConcurrencyMode) -> i32

Converts to this type from the input type.

impl Hash for ConcurrencyMode

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 ConcurrencyMode

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

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

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

type Error = UnknownEnumValue

The type returned in the event of a conversion error.

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

Performs the conversion.

impl Copy for ConcurrencyMode

impl Eq for ConcurrencyMode

impl StructuralPartialEq for ConcurrencyMode