Struct MaybeNullBufferBuilder 

pub(crate) struct MaybeNullBufferBuilder {
    nulls: NullBufferBuilder,
}

Builder for an (optional) null mask

Optimized for avoid creating the bitmask when all values are non-null

Fields

nulls: NullBufferBuilder

Note this is an Arrow VALIDITY buffer (so it is false for nulls, true for non-nulls)

Implementations

impl MaybeNullBufferBuilder

pub fn new() -> Self

Create a new builder

pub fn is_null(&self, row: usize) -> bool

Return true if the row at index row is null

pub fn append(&mut self, is_null: bool)

Set the nullness of the next row to is_null

If value is true, the row is null. If value is false, the row is non null

pub fn append_n(&mut self, n: usize, is_null: bool)

pub fn allocated_size(&self) -> usize

return the number of heap allocated bytes used by this structure to store boolean values

pub fn build(self) -> Option<NullBuffer>

Return a NullBuffer representing the accumulated nulls so far

pub fn take_n(&mut self, n: usize) -> Option<NullBuffer>

Returns a NullBuffer representing the first n rows accumulated so far shifting any remaining down by n

Trait Implementations

impl Debug for MaybeNullBufferBuilder

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

Formats the value using the given formatter.