Enum LayoutChildType 

pub enum LayoutChildType {
    Transparent(Arc<str>),
    Auxiliary(Arc<str>),
    Chunk((usize, u64)),
    Field(FieldName),
}

A type that allows us to identify how a layout child relates to its parent.

Variants

Transparent(Arc<str>)

A layout child that retains the same schema and row offset position in the dataset.

Auxiliary(Arc<str>)

A layout child that provides auxiliary data, e.g. dictionary values, zone maps, etc. Contains a human-readable name of the child.

Chunk((usize, u64))

A layout child that represents a row-based chunk of data. Contains the chunk index and relative row offset of the child.

Field(FieldName)

A layout child that represents a single field of data. Contains the field name of the child.

Implementations

impl LayoutChildType

pub fn name(&self) -> Arc<str>

Returns the name of this child.

pub fn row_offset(&self) -> Option<u64>

Returns the relative row offset of this child. For auxiliary children, this is None.

Trait Implementations

impl Clone for LayoutChildType

fn clone(&self) -> LayoutChildType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LayoutChildType

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

Formats the value using the given formatter.

impl PartialEq for LayoutChildType

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for LayoutChildType

impl StructuralPartialEq for LayoutChildType