Struct hakuban::ObjectObserveContract
source · pub struct ObjectObserveContract { /* private fields */ }
Expand description
Represents a wish, a contract to observe an object
ObjectObserveContract is a Stream, emitting ObjectStateStream objects.
ObjectStateStream will only get emitted if/when LocalExchange gets to know at least one ObjectState of the object the contract pertains to. ObjectObserveContract will not emit more than one ObjectStateStream at a time. New ObjectStateStream will get emitted only when previous one gets dropped.
The Stream will end when contract gets ObjectObserveContract::terminated.
Cloning
ObjectObserveContract can be cloned, but cloning does not create a new contract. Think of it as creating o paper copy of an on-paper contract. It’s a new sheet of paper, but not a new deal/agreement. Clones are basically references to a logical agreement.
Accordingly, terminating any of the clones (or the original), renders all of them terminated. Using mutiple clones as streams at the same time will have the clones race for the ObjectStateStreams.
Implementations§
source§impl ObjectObserveContract
impl ObjectObserveContract
pub fn descriptor(&self) -> &ObjectDescriptor
pub fn ready(&mut self) -> Option<ObjectStateStream>
pub fn terminate(&mut self)
Trait Implementations§
source§impl Clone for ObjectObserveContract
impl Clone for ObjectObserveContract
source§fn clone(&self) -> ObjectObserveContract
fn clone(&self) -> ObjectObserveContract
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Stream for ObjectObserveContract
impl Stream for ObjectObserveContract
§type Item = ObjectStateStream
type Item = ObjectStateStream
impl Unpin for ObjectObserveContract
Auto Trait Implementations§
impl RefUnwindSafe for ObjectObserveContract
impl Send for ObjectObserveContract
impl Sync for ObjectObserveContract
impl UnwindSafe for ObjectObserveContract
Blanket Implementations§
source§impl<T> StreamExt for Twhere
T: Stream + ?Sized,
impl<T> StreamExt for Twhere T: Stream + ?Sized,
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