Enum CompatColumnRef

pub enum CompatColumnRef<'t, 'buf> {
    Modern(&'t ModernColumn<'buf>),
    Legacy(&'t LegacyColumn<'buf>),
}

Wraps a reference to a table column.

Variants

Modern(&'t ModernColumn<'buf>)

Legacy(&'t LegacyColumn<'buf>)

Implementations

impl<'t, 'buf> CompatColumnRef<'t, 'buf>

pub fn label(&self) -> Label<'t>

Returns the column’s label. For legacy tables, this is wrapped into a Label::String.

pub fn value_type(&self) -> ValueType

pub fn flags(&self) -> &[LegacyFlag<'buf>]

Returns the column’s list of defined flags.

For modern tables this always returns &[].

pub fn count(&self) -> usize

Returns the number of values in a cell of this column.

For modern tables and non-array cells, this returns 1.

pub fn data_size(&self) -> usize

Returns the total data size that a single cell of this column holds.

For modern tables, this is always the size of the value type.

Trait Implementations

impl<'t, 'buf> Clone for CompatColumnRef<'t, 'buf>

fn clone(&self) -> CompatColumnRef<'t, 'buf>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'t, 'buf> From<&'t LegacyColumn<'buf>> for CompatColumnRef<'t, 'buf>

fn from(value: &'t LegacyColumn<'buf>) -> Self

Converts to this type from the input type.

impl<'t, 'buf> From<&'t ModernColumn<'buf>> for CompatColumnRef<'t, 'buf>

fn from(value: &'t ModernColumn<'buf>) -> Self

Converts to this type from the input type.

impl<'t, 'buf> Copy for CompatColumnRef<'t, 'buf>