Struct CepKeyState 

pub struct CepKeyState {
    pub partial: Option<PartialMatch>,
    pub last_event_ms: i64,
}

Per-key CEP state.

Serialize/Deserialize (via serde) allow per-key state to be snapshotted by the checkpoint coordinator. The partial field is not serialised directly because RecordBatch does not implement Serialize; the metadata captured in the separate captured_event_count field on PartialMatch is enough to recover the partial state from a replay log on restart.

Fields

partial: Option<PartialMatch>

last_event_ms: i64

Wall-clock event time (ms) of the most recent event processed for this key. Updated on every process_event call; useful for idle-key detection and TTL eviction by the streaming executor.

Trait Implementations

impl Clone for CepKeyState

fn clone(&self) -> CepKeyState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CepKeyState

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

Formats the value using the given formatter.

impl Default for CepKeyState

fn default() -> CepKeyState

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for CepKeyState

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for CepKeyState

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

where __S: Serializer,

Serialize this value into the given Serde serializer.