Struct FieldStruct 

pub struct FieldStruct {
    pub fields: Vec<Field>,
    pub columns: IndexMap<ColumnId, usize>,
    pub field_mask: PathFieldSet,
    pub sub_projection: Projection,
}

Maps an embedded struct field to its flattened column representation.

Embedded fields are stored by flattening their primitive fields into columns with names like {field}_{embedded_field}. This structure tracks the mapping for each field in the embedded struct.

Fields

fields: Vec<Field>

Per-field mappings for the embedded struct’s fields.

Indexed by field index within the embedded model.

columns: IndexMap<ColumnId, usize>

Flattened mapping from columns to lowering expression indices.

This map contains all columns impacted by this embedded field, paired with their corresponding lowering expression index in Model::model_to_table.

field_mask: PathFieldSet

Update coverage mask for this embedded field.

The union of the field_mask bits of every primitive nested within this embedded struct (recursively).

sub_projection: Projection

The projection from the root model field down to this embedded field within the type hierarchy. Identity for root-level embedded fields.

Trait Implementations

impl Clone for FieldStruct

fn clone(&self) -> FieldStruct

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FieldStruct

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

Formats the value using the given formatter.