Struct SemanticHintBinding 

pub struct SemanticHintBinding {
    pub column: String,
    pub kind: SemanticHintKind,
    pub checked_values: usize,
    pub matched_values: usize,
    pub exact: bool,
}

Per-column evidence of whether a semantic hint actually bound to any value.

A hint expresses user domain knowledge about a column; this records how much of the column that knowledge matched. matched_values counts the values of the kind the hint expects (numeric for positive, date-parseable for temporal, every non-null value for identifier, which coerces the column).

exact distinguishes a full-data count from a sampled one: a hint that matched nothing (matched_values == 0) is only proven inert when the count covers every row. A sampled zero is recorded but never treated as an error, because absence in a sample is not proof of absence in the data.

Fields

column: String

The hinted column this evidence is for.

kind: SemanticHintKind

Which hint list named the column.

checked_values: usize

Non-null values considered.

matched_values: usize

Values that matched the hint’s expected kind.

exact: bool

Whether the counts cover every row (true) or a sample (false).

Implementations

impl SemanticHintBinding

pub fn is_proven_inert(&self) -> bool

Whether this hint is proven inert: it was assessed over the full data (exact), had values to consider (checked_values > 0), yet matched none of them.

Trait Implementations

impl Clone for SemanticHintBinding

fn clone(&self) -> SemanticHintBinding

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SemanticHintBinding

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SemanticHintBinding

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for SemanticHintBinding

impl PartialEq for SemanticHintBinding

fn eq(&self, other: &SemanticHintBinding) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for SemanticHintBinding

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for SemanticHintBinding