Struct IndexExprResult 

pub struct IndexExprResult {
    pub lower: RowAddrMask,
    pub upper: RowAddrMask,
    /* private fields */
}

Result of an index search after NULL rows have been dropped. This is what the read planner consumes.

Fields

lower: RowAddrMask

Rows the index guarantees are in the answer.

upper: RowAddrMask

Rows that may be in the answer. Rows outside upper are guaranteed not in the answer.

Implementations

impl IndexExprResult

pub fn exact(mask: RowAddrMask) -> Self

Precise result — every row in mask is in the answer and every row outside is not. Equivalent to the old Exact variant.

pub fn at_most(mask: RowAddrMask) -> Self

Upper-bound-only result. Equivalent to the old AtMost variant.

pub fn at_least(mask: RowAddrMask) -> Self

Lower-bound-only result. Equivalent to the old AtLeast variant.

pub fn new(lower: RowAddrMask, upper: RowAddrMask) -> Self

Construct a refined interval result — lower rows are guaranteed matches and upper rows are candidates, with lower ⊆ upper.

Use Self::exact / Self::at_most / Self::at_least for the three degenerate shapes; this constructor is only needed when both endpoints are non-trivial.

pub fn is_exact(&self) -> bool

True if the result is exact — the answer is precisely the lower (== upper) mask. See NullableIndexExprResult::is_exact for the structural-form caveat and the precedence convention shared with Self::is_at_most / Self::is_at_least.

pub fn is_at_most(&self) -> bool

True if lower matches no rows (canonical AllowList(∅)) — the index gives only an upper bound on the answer. See NullableIndexExprResult::is_exact for caveats.

pub fn is_at_least(&self) -> bool

True if upper covers every row (canonical BlockList(∅)) — the index gives only a lower bound on the answer. See NullableIndexExprResult::is_at_least for the precedence convention consumers should follow.

impl IndexExprResult

pub fn serialize( &self, fragments_covered: &RoaringBitmap, format: IndexExprResultWireFormat, ) -> Result<RecordBatch>

pub fn deserialize(batch: &RecordBatch) -> Result<(Self, RoaringBitmap)>

Deserialize from a record batch produced by Self::serialize.

Trait Implementations

impl BitAnd for IndexExprResult

type Output = IndexExprResult

The resulting type after applying the & operator.

fn bitand(self, rhs: Self) -> Self

Performs the & operation.

impl BitOr for IndexExprResult

type Output = IndexExprResult

The resulting type after applying the | operator.

fn bitor(self, rhs: Self) -> Self

Performs the | operation.

impl Clone for IndexExprResult

fn clone(&self) -> IndexExprResult

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IndexExprResult

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

Formats the value using the given formatter.

impl Not for IndexExprResult

type Output = IndexExprResult

The resulting type after applying the ! operator.

fn not(self) -> Self

Performs the unary ! operation.