Struct PredicateRange 

pub struct PredicateRange {
    pub column: Arc<str>,
    pub lower: Option<Value>,
    pub include_lower: bool,
    pub upper: Option<Value>,
    pub include_upper: bool,
}

A merged value range over one column, derived from pushed scan predicates. Used for zone-map pruning: a storage chunk whose min/max bounds cannot overlap this range cannot contain matching rows.

Fields

column: Arc<str>

lower: Option<Value>

include_lower: bool

upper: Option<Value>

include_upper: bool

Implementations

impl PredicateRange

pub fn overlaps(&self, min: &Value, max: &Value) -> bool

Whether a chunk holding values in [min, max] may contain rows matching this range. Conservative: returns true unless the chunk provably lies entirely outside.

pub fn equality_len(&self) -> Option<usize>

Length of the equality probe when this range is a closed point (lower == upper, both inclusive). Used for length pre-pruning of complex values: a chunk whose length interval excludes the probe length cannot contain a match. Returns None for open ranges and for values without a prunable length.

pub fn equality_leaf_range(&self) -> Option<(Value, Value)>

Scalar-leaf interval of the equality probe, if closed point over a leaf-carrying complex value. A chunk whose leaf interval is disjoint cannot contain a match even when outer lengths coincide. Uses the same flattening as chunk summaries, so exactly equal pairs share the interval.

pub fn equality_key_fp(&self) -> Option<u64>

Key fingerprint of the equality probe, if it carries keyed content. Returns None for keyless probes so the bloom gate stays disabled.

Trait Implementations

impl Clone for PredicateRange

fn clone(&self) -> PredicateRange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PredicateRange

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

Formats the value using the given formatter.