Struct NullMask 

pub struct NullMask { /* private fields */ }

Packed null bitmask where bit=1 means NULL, bit=0 means non-null.

Implementations

impl NullMask

pub fn new(capacity: u64) -> Self

Create a new null mask with all values set to non-null.

pub fn all_null(capacity: u64) -> Self

Create a null mask with all values set to null.

pub fn has_no_nulls_guarantee(&self) -> bool

Fast-path: returns true if no nulls are guaranteed absent.

pub fn is_null(&self, pos: u64) -> bool

Check whether a specific position is null.

pub fn set_null(&mut self, pos: u64, is_null: bool)

Set a specific position to null or non-null.

pub fn set_all_non_null(&mut self)

Set all positions to non-null.

pub fn set_all_null(&mut self)

Set all positions to null.

pub fn set_null_range(&mut self, offset: u64, count: u64, is_null: bool)

Set a range of bits to null or non-null.

pub fn count_nulls(&self) -> u64

Count the number of null bits set in the mask.

pub fn copy_from( &mut self, src: &NullMask, src_offset: u64, dst_offset: u64, count: u64, ) -> bool

Copy null bits from another mask. Returns true if any null bit was copied.

pub fn resize(&mut self, new_capacity: u64)

Resize the mask to a new capacity. New bits are set to non-null.

pub fn num_entries(&self) -> usize

Number of u64 entries in the backing buffer.

pub fn capacity(&self) -> u64

Total number of bits the mask can track.

pub fn data(&self) -> &[u64]

Access the raw data slice (read-only).

pub fn from_raw(data: Vec<u64>, capacity: u64) -> Self

Construct from a raw u64 vec (used by JIT output).

Trait Implementations

impl Clone for NullMask

fn clone(&self) -> NullMask

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NullMask

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

Formats the value using the given formatter.