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OwnershipRewrite

micromegas::analytics::lakehouse::ownership_rewrite

Struct OwnershipRewrite 

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pub struct OwnershipRewrite { /* private fields */ }
Expand description

Injects an audience predicate into every MaterializedView scan (see the module doc comment).

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impl OwnershipRewrite

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pub fn new( read_scope: ReadScope, public_view_sets: Vec<String>, processes_source: Arc<dyn TableSource>, streams_source: Arc<dyn TableSource>, ) -> OwnershipRewrite

processes_source/streams_source must be built from MaterializedView::new(..., query_range: None) over the raw partitions (equivalent to __processes__partitions / __streams__partitions) – see query.rs::make_session_context: the audience lookup must be time-unbounded, and must not go through the SqlBatchView-merged processes/streams named tables. Used only by the semi-join/async_events/thread_spans branches – the views carrying an audience column, DDL-defined ones included, need neither.

Trait Implementations§

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impl AnalyzerRule for OwnershipRewrite

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fn name(&self) -> &str

A human readable name for this analyzer rule
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fn analyze( &self, plan: LogicalPlan, _options: &ConfigOptions, ) -> Result<LogicalPlan, DataFusionError>

Rewrite plan
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impl Debug for OwnershipRewrite

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

dyn TableSource carries no Debug impl, so processes_source/streams_source are named but not expanded.

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