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IsRefBinding

uni_db::query::df_graph

Struct IsRefBinding 

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pub struct IsRefBinding {
    pub derived_scan_index: usize,
    pub rule_name: String,
    pub is_self_ref: bool,
    pub negated: bool,
    pub anti_join_cols: Vec<(String, String)>,
    pub target_has_prob: bool,
    pub target_prob_col: Option<String>,
    pub provenance_join_cols: Vec<(String, String)>,
}
Expand description

IS-ref binding: a reference from a clause body to a derived relation.

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§derived_scan_index: usize

Index into the DerivedScanRegistry.

§rule_name: String

Name of the rule being referenced.

§is_self_ref: bool

Whether this is a self-reference (rule references itself).

§negated: bool

Whether this is a negated reference (NOT IS).

§anti_join_cols: Vec<(String, String)>

For negated IS-refs: (left_body_col, right_derived_col) pairs for anti-join filtering.

left_body_col is the VID column in the clause body (e.g., "n._vid"); right_derived_col is the corresponding KEY column in the negated rule’s facts (e.g., "n"). Empty for non-negated IS-refs.

§target_has_prob: bool

Whether the target rule has a PROB column.

§target_prob_col: Option<String>

Name of the PROB column in the target rule, if any.

§provenance_join_cols: Vec<(String, String)>

(body_col, derived_col) pairs for provenance tracking.

Used by shared-proof detection to find which source facts a derived row consumed. Populated for all IS-refs (not just negated ones).

Trait Implementations§

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impl Clone for IsRefBinding

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fn clone(&self) -> IsRefBinding

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for IsRefBinding

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

Formats the value using the given formatter. Read more

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