Trait PersistedRow 

pub trait PersistedRow: EntityKind + Sized {
    // Required methods
    fn materialize_from_slots(
        slots: &mut dyn SlotReader,
    ) -> Result<Self, InternalError>;
    fn write_slots(&self, out: &mut dyn SlotWriter) -> Result<(), InternalError>;

    // Provided method
    fn project_slot(
        slots: &mut dyn SlotReader,
        slot: usize,
    ) -> Result<Option<Value>, InternalError>
       where Self: FieldProjection { ... }
}

PersistedRow

PersistedRow is the derive-owned bridge between typed entities and slot-addressable persisted rows. It owns entity-specific materialization/default semantics while runtime paths stay structural at the row boundary.

Required Methods

fn materialize_from_slots( slots: &mut dyn SlotReader, ) -> Result<Self, InternalError>

Materialize one typed entity from one slot reader.

fn write_slots(&self, out: &mut dyn SlotWriter) -> Result<(), InternalError>

Write one typed entity into one slot writer.

Provided Methods

fn project_slot( slots: &mut dyn SlotReader, slot: usize, ) -> Result<Option<Value>, InternalError>

where Self: FieldProjection,

Decode one slot value needed by structural planner/projection consumers.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors