Struct ProjectedRow 

pub struct ProjectedRow<'schema, 'row> { /* private fields */ }

Concrete borrowed row passed from a projected source into an aggregate executor.

Keeping this representation in the execution contract lets aggregate hot paths use positional values without a trait-object call for every group key and aggregate input. Extra values cover source metadata such as document identifiers and scores without materializing a named row.

Implementations

impl<'schema, 'row> ProjectedRow<'schema, 'row>

pub fn new( schema: &'schema RowSchema, slots: &'schema [ProjectedValueSlot], fields: &'row [&'row Value], extras: &'row [Option<Value>], ) -> Self

pub fn positional_column(&self, index: usize) -> Option<&Value>

pub fn into_values(self) -> Vec<Value>

Materialize only at an operator boundary that requires owned physical values.

Trait Implementations

impl RowLookup for ProjectedRow<'_, '_>

fn column(&self, name: &str) -> Option<&Value>

fn column_is_ambiguous(&self, name: &str) -> bool

Whether an unqualified name identifies more than one visible input column. Callers must report SQLSTATE 42702 instead of selecting an arbitrary suffix match.

fn qualified_column(&self, qualifier: &str, column: &str) -> Option<&Value>

fn qualified_column_is_ambiguous(&self, qualifier: &str, column: &str) -> bool

Whether a qualified identity names more than one visible input column.

fn positional_column(&self, index: usize) -> Option<&Value>

Return a value by the physical schema position used to construct this row view. Materialized named rows do not expose positional access; projected execution sources override it so compiled hot paths can avoid repeating string lookup for every expression and row.

fn visit_columns(&self, visitor: &mut dyn FnMut(&str, &Value))

Visit every logical column in schema order. Named rows use their map order; positional execution rows override this without materializing a map. The default keeps narrow projected lookup implementations source compatible when they deliberately do not expose whole-row semantics.