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HashJoin

faucet_core::join

Struct HashJoin

pub struct HashJoin { /* private fields */ }

Expand description

A hash join: build the index, then probe it.

Implementations§

impl HashJoin

pub fn new(config: JoinConfig) -> Self

Create an empty join ready to receive build-side pages.

pub fn stats(&self) -> &JoinStats

Access the running counters.

pub fn config(&self) -> &JoinConfig

The compiled config.

pub fn add_build_page(&mut self, records: Vec<Value>) -> Result<(), FaucetError>

Ingest a page of build-side records into the index.

Records whose build key resolves to null/absent are skipped (counted in JoinStats::build_nulls). Returns FaucetError::Transform with a JoinBuildOverflow-style message once the cumulative build count exceeds JoinConfig::max_build_records.

pub fn indexed_keys(&self) -> usize

Number of distinct keys indexed so far.

pub fn probe_page( &mut self, records: Vec<Value>, ) -> Result<Vec<Value>, FaucetError>

Enrich a page of probe-side records against the built index.

Must be called only after every build page has been ingested. Returns the enriched output records (0..N per input record depending on mode and duplicate policy).

Trait Implementations§

impl Debug for HashJoin

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

impl Freeze for HashJoin

impl RefUnwindSafe for HashJoin

impl Send for HashJoin

impl Sync for HashJoin

impl Unpin for HashJoin

impl UnsafeUnpin for HashJoin

impl UnwindSafe for HashJoin

Blanket Implementations§

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