Struct ReadConcern

#[non_exhaustive]
pub struct ReadConcern {
    pub level: ReadConcernLevel,
}

Specifies the consistency and isolation properties of read operations from replica sets and replica set shards.

See the documentation here for more information about read concerns.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

level: ReadConcernLevel

The level of the read concern.

Implementations

impl ReadConcern

pub fn majority() -> ReadConcern

Creates a read concern with level “majority”. See the specific documentation for this read concern level here.

pub fn local() -> ReadConcern

Creates a read concern with level “local”. See the specific documentation for this read concern level here.

pub fn linearizable() -> ReadConcern

Creates a read concern with level “linearizable”. See the specific documentation for this read concern level here.

pub fn available() -> ReadConcern

Creates a read concern with level “available”. See the specific documentation for this read concern level here.

pub fn snapshot() -> ReadConcern

Creates a read concern with level “snapshot”. See the specific documentation for this read concern level here.

pub fn custom(level: impl AsRef<str>) -> ReadConcern

Creates a read concern with a custom read concern level. This is present to provide forwards compatibility with any future read concerns which may be added to new versions of MongoDB.

Trait Implementations

impl Clone for ReadConcern

fn clone(&self) -> ReadConcern

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ReadConcern

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ReadConcern

fn deserialize<__D>( __deserializer: __D, ) -> Result<ReadConcern, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<ReadConcernLevel> for ReadConcern

fn from(level: ReadConcernLevel) -> ReadConcern

Converts to this type from the input type.

impl PartialEq for ReadConcern

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

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ReadConcern