Struct NullableRowAddrSet 

pub struct NullableRowAddrSet { /* private fields */ }

A set of row ids, with optional set of nulls.

This is often a result of a filter, where selected represents the rows that passed the filter, and nulls represents the rows where the filter evaluated to null. For example, in SQL NULL > 5 evaluates to null. This is distinct from being deselected to support proper three-valued logic for NOT. (NOT FALSE is TRUE, NOT TRUE is FALSE, but NOT NULL is NULL. NULL | TRUE = TRUE, NULL & FALSE = FALSE, but NULL | FALSE = NULL and NULL & TRUE = NULL).

Implementations

impl NullableRowAddrSet

pub fn new(selected: RowAddrTreeMap, nulls: RowAddrTreeMap) -> Self

Create a new RowSelection from selected rows and null rows.

nulls may have overlap with selected. Rows in nulls are considered NULL, even if they are also in selected.

pub fn with_nulls(self, nulls: RowAddrTreeMap) -> Self

pub fn empty() -> Self

Create an empty selection. Alias for Default::default

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

Get the number of TRUE rows (selected but not null).

Returns None if the number of TRUE rows cannot be determined. This happens if the underlying RowAddrTreeMap has full fragments selected.

pub fn is_empty(&self) -> bool

pub fn selected(&self, row_id: u64) -> bool

Check if a row_id is selected (TRUE)

pub fn null_rows(&self) -> &RowAddrTreeMap

Get the null rows

pub fn true_rows(&self) -> RowAddrTreeMap

Get the TRUE rows (selected but not null)

pub fn union_all(selections: &[Self]) -> Self

Trait Implementations

impl BitAndAssign<&NullableRowAddrSet> for NullableRowAddrSet

fn bitand_assign(&mut self, rhs: &Self)

Performs the &= operation.

impl BitOrAssign<&NullableRowAddrSet> for NullableRowAddrSet

fn bitor_assign(&mut self, rhs: &Self)

Performs the |= operation.

impl Clone for NullableRowAddrSet

fn clone(&self) -> NullableRowAddrSet

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NullableRowAddrSet

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

Formats the value using the given formatter.

impl DeepSizeOf for NullableRowAddrSet

fn deep_size_of_children(&self, context: &mut Context) -> usize

Returns an estimation of the heap-managed storage of this object. This does not include the size of the object itself.

fn deep_size_of(&self) -> usize

Returns an estimation of a total size of memory owned by the object, including heap-managed storage.

impl Default for NullableRowAddrSet

fn default() -> NullableRowAddrSet

Returns the “default value” for a type.

impl PartialEq for NullableRowAddrSet

fn eq(&self, other: &Self) -> 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.