Struct DynRowView 

pub struct DynRowView<'a> { /* private fields */ }

Borrowed dynamic row backed by an arrow_array::RecordBatch.

Implementations

impl<'a> DynRowView<'a>

pub fn len(&self) -> usize

Number of columns in this row.

pub fn is_empty(&self) -> bool

Returns true when the row has zero columns.

pub fn fields(&self) -> &Fields

Borrow the schema fields.

pub fn get(&self, column: usize) -> Result<Option<DynCellRef<'_>>, DynViewError>

Retrieve the cell at column as a borrowed DynCellRef.

pub fn get_by_name( &self, name: &str, ) -> Option<Result<Option<DynCellRef<'_>>, DynViewError>>

Retrieve a column by name, returning None if the field does not exist.

pub fn to_owned(&self) -> Result<DynRow, DynViewError>

Clone this row into an owned DynRow, allocating owned dynamic cells for each column.

pub fn into_raw(self) -> Result<DynRowRaw, DynViewError>

Consume this row view and capture its values as lifetime-erased DynCellRaw entries.

pub fn project( self, projection: &DynProjection, ) -> Result<DynRowView<'a>, DynViewError>

Apply a projection to this view, yielding a new view that references only the mapped columns.

The projection is lazy and reuses the underlying batch buffers.

Errors

Returns DynViewError::Invalid if the projection was derived from a schema whose width differs from the underlying batch.

pub fn row_index(&self) -> usize

Access the underlying row index.

Trait Implementations

impl<'a> Debug for DynRowView<'a>

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

Formats the value using the given formatter.