Struct WindowExecutionSpec 

pub struct WindowExecutionSpec {

    pub key_column: String,
    pub key_column_type: String,
    pub event_time_column: String,
    pub watermark_lag_ms: u64,
    pub window_kind: WindowKind,
    pub window_size_ms: u64,
    pub slide_ms: Option<u64>,
    pub session_gap_ms: Option<u64>,
    pub agg_exprs: Vec<WindowAgg>,
    pub state_ttl_ms: Option<u64>,
    pub allowed_lateness_ms: Option<u64>,
    pub source_watermark_lags: HashMap<String, u64>,
    pub source_id_column: Option<String>,
    pub window_timezone: Option<String>,
}

Full specification for a keyed, windowed streaming operator.

Fields

key_column: String

key_column_type: String

Arrow type of the key column as a simple string tag: "int32", "int64", "float64", "utf8", or "bool". Defaults to "utf8".

event_time_column: String

watermark_lag_ms: u64

window_kind: WindowKind

window_size_ms: u64

slide_ms: Option<u64>

Slide step for sliding windows.

session_gap_ms: Option<u64>

Session gap for session windows.

agg_exprs: Vec<WindowAgg>

state_ttl_ms: Option<u64>

allowed_lateness_ms: Option<u64>

ST11: events arriving within [watermark, watermark + allowed_lateness_ms) are kept for late-firing instead of being dropped. Defaults to None (no lateness — events past the watermark are dropped). When Some(0) the behaviour is identical to None (drop on arrival past the watermark).

source_watermark_lags: HashMap<String, u64>

Per-source fixed-lag watermark (ms). When non-empty, effective watermark is the minimum across all configured sources (R5.2 multi-source watermark reconciliation).

source_id_column: Option<String>

Column identifying the input source for multi-source watermark propagation.

window_timezone: Option<String>

Optional timezone for SQL civil-time window bucketing (e.g. “America/New_York”).

This is only used for SQL window TVFs (TUMBLE, HOP, SESSION) when the user specifies WITH TIMEZONE. It affects how event timestamps are bucketed into civil-time windows (e.g., daily windows in a specific timezone). Watermark comparison and checkpoint ordering are always UTC and are NOT affected by this field.

Implementations

impl WindowExecutionSpec

pub fn default_count_agg() -> Vec<WindowAgg>

pub fn tumbling( key_column: impl Into<String>, event_time_column: impl Into<String>, window_size_ms: u64, ) -> Self

Trait Implementations

impl Clone for WindowExecutionSpec

fn clone(&self) -> WindowExecutionSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WindowExecutionSpec

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for WindowExecutionSpec

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for WindowExecutionSpec

impl PartialEq for WindowExecutionSpec

fn eq(&self, other: &WindowExecutionSpec) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for WindowExecutionSpec

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for WindowExecutionSpec