Enum ColumnValues 

pub enum ColumnValues {
    I64 {
        values: Vec<i64>,
        valid: Vec<u8>,
    },
    F64 {
        values: Vec<f64>,
        valid: Vec<u8>,
    },
    I32 {
        values: Vec<i32>,
        valid: Vec<u8>,
    },
    Bool {
        values: Vec<u8>,
        valid: Vec<u8>,
    },
    I16 {
        values: Vec<i16>,
        valid: Vec<u8>,
    },
    F32 {
        values: Vec<f32>,
        valid: Vec<u8>,
    },
    General(Vec<Option<Value>>),
}

Raw decoded values for one property column, in column-major order.

Fixed-size numeric and boolean columns (Bool/SmallInt/Int/BigInt/Float/Double) are returned as dense typed vectors plus a validity bitmap (valid[i] == 1 means the value is present, not null). Date/Time/DateTime/Uuid columns and everything else (strings, mixed, other types) fall back to per-row decoded Option<Value>: extending the typed layout there would require matching executor support, while the fallback preserves mixed-type reads without changing results. A column whose rows do not share one numeric kind also degrades to the fallback so no value is silently dropped.

Variants

I64

Fields

values: Vec<i64>

valid: Vec<u8>

F64

Fields

values: Vec<f64>

valid: Vec<u8>

I32

Fields

values: Vec<i32>

valid: Vec<u8>

Bool

Fields

values: Vec<u8>

valid: Vec<u8>

I16

Fields

values: Vec<i16>

valid: Vec<u8>

F32

Fields

values: Vec<f32>

valid: Vec<u8>

General(Vec<Option<Value>>)

Implementations

impl ColumnValues

pub fn len(&self) -> usize

Number of rows in this column.

pub fn is_empty(&self) -> bool

pub fn value_at(&self, idx: usize) -> Option<Value>

The decoded value at row idx (None for null / missing).

pub fn append(&mut self, other: ColumnValues)

Append another column’s rows (same kind). Kind mismatches are resolved by degrading both sides to General, except when the target is an empty General — then the source’s typed kind is adopted so the first table’s decode stays typed.

pub fn append_nulls(&mut self, n: usize)

Append n null rows (used when merging columns across tables that lack a column).

pub fn truncate(&mut self, n: usize)

Truncate the column to the first n rows.

pub fn compact(&mut self, keep: &[bool])

Compress the column to the rows where keep[i] is true, in order.

pub fn select(&mut self, selection: &[usize])

Compress the column to the rows at selection indices, in order.

Selection-vector form of Self::compact: filtering produces an index sequence instead of a boolean mask, and surviving rows are gathered directly without decoding skipped rows again. Kind-specific gathering keeps typed layouts typed; callers keep the same selection for every column of the batch.

pub fn to_general(&self) -> Vec<Option<Value>>

Convert to a General per-row Option<Value> column.

pub fn scatter(&self, target: &mut ColumnValues, positions: &[(usize, u32)])

Scatter this column’s rows into target at the given output positions (used when merging per-shard decodes back into input order). positions[i] is (out_idx, local_id); the local id is ignored here. Same-kind typed targets are written directly; a kind mismatch degrades the target to General so no decoded value is lost.

pub fn from_general_with_type( values: Vec<Option<Value>>, data_type: &DataType, ) -> Option<ColumnValues>

Convert a General per-row column into a typed column when every value matches the column’s declared scalar kind (or is null). Returns None when the declared type does not map to a typed kind or values disagree.

pub fn all_valid(&self) -> bool

Whether every row is non-null (so the typed fast path can be used without a validity bitmap).

Trait Implementations

impl Clone for ColumnValues

fn clone(&self) -> ColumnValues

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnValues

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

Formats the value using the given formatter.

impl PartialEq for ColumnValues

fn eq(&self, other: &ColumnValues) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ColumnValues