pub enum ExpectedRevision {
Any,
StreamExists,
NoStream,
Exact(u64),
}
Expand description
Constants used for expected version control. The use of expected version can be a bit tricky especially when discussing assurances given by the GetEventStore server.
The GetEventStore server will assure idempotency for all operations using
any value in ExpectedRevision
except ExpectedRevision::Any
. When using
ExpectedRevision::Any
, the GetEventStore server will do its best to assure
idempotency but will not guarantee idempotency.
Variants
Any
This write should not conflict with anything and should always succeed.
StreamExists
The stream should exist. If it or a metadata stream does not exist, treats that as a concurrency problem.
NoStream
The stream being written to should not yet exist. If it does exist, treats that as a concurrency problem.
Exact(u64)
Tuple Fields
0: u64
States that the last event written to the stream should have an event number matching your expected value.
Trait Implementations
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
Auto Trait Implementations
impl RefUnwindSafe for ExpectedRevision
impl Send for ExpectedRevision
impl Sync for ExpectedRevision
impl Unpin for ExpectedRevision
impl UnwindSafe for ExpectedRevision
Blanket Implementations
Mutably borrows from an owned value. Read more
Compare self to key
and return true
if they are equal.
Wrap the input message T
in a tonic::Request
pub fn vzip(self) -> V
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more