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RemoveFactorizationRewriter

linkrs_query::optimizer::factorization::remove_factorization_rewriter

Struct RemoveFactorizationRewriter 

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pub struct RemoveFactorizationRewriter;
Expand description

RemoveFactorizationRewriter: flatten all groups and eliminate LogicalFlatten nodes.

Mirrors lbug::optimizer::RemoveFactorizationRewriter in ref/ladybug/src/optimizer/remove_factorization_rewriter.cpp. Run at the very beginning of the optimizer pipeline so that heuristic and CBO passes operate on a fully flat view.

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impl RemoveFactorizationRewriter

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pub fn new() -> Self

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pub fn rewrite( &self, plan: &mut LogicalNodeEnum, ) -> Result<(), FactorizationError>

Rewrite the plan in place: bottom-up traversal, replace every LogicalFlatten with its child, and recompute flat schemas on every operator so downstream passes see a fully flat view.

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pub fn has_flatten_public(node: &LogicalNodeEnum) -> bool

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impl Default for RemoveFactorizationRewriter

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fn default() -> Self

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