Enum eventually::version::Check

pub enum Check {
    Any,
    MustBe(Version),
}

Used to set a specific expectation during an operation that mutates some sort of resource (e.g. an Event Stream) that supports versioning.

It allows for optimistic locking, avoiding data races when modifying the same resource at the same time.

Variants

Any

Disables any kind of optimistic locking check, allowing for any Version to be used compared to the new one.

MustBe(Version)

Expects that the previous Version used for the operation must have the value specified.

Trait Implementations

impl Clone for Check

fn clone(&self) -> Check

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Check

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

Formats the value using the given formatter.

impl PartialEq for Check

fn eq(&self, other: &Check) -> 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 Copy for Check

impl Eq for Check

impl StructuralPartialEq for Check