Struct tantivy_columnar::column_values::CompactSpaceU64Accessor

pub struct CompactSpaceU64Accessor(/* private fields */);

Exposes the compact space compressed values as u64.

This allows faster access to the values, as u64 is faster to work with than u128. It also allows to handle u128 values like u64, via the open_u64_lenient as a uniform access interface.

When converting from the internal u64 to u128 compact_to_u128 can be used.

Implementations

impl CompactSpaceU64Accessor

pub fn compact_to_u128(&self, compact: u32) -> u128

Convert a compact space value to u128

Trait Implementations

impl ColumnValues for CompactSpaceU64Accessor

fn get_val(&self, doc: u32) -> u64

Return the value associated with the given idx.

fn min_value(&self) -> u64

Returns a lower bound for this column of values.

fn max_value(&self) -> u64

Returns an upper bound for this column of values.

fn num_vals(&self) -> u32

The number of values in the column.

fn iter(&self) -> Box<dyn Iterator<Item = u64> + '_>

Returns a iterator over the data

fn get_row_ids_for_value_range( &self, value_range: RangeInclusive<u64>, position_range: Range<u32>, positions: &mut Vec<u32> )

Get the row ids of values which are in the provided value range.

fn get_vals(&self, indexes: &[u32], output: &mut [T])

Allows to push down multiple fetch calls, to avoid dynamic dispatch overhead.

fn get_vals_opt(&self, indexes: &[u32], output: &mut [Option<T>])

Allows to push down multiple fetch calls, to avoid dynamic dispatch overhead. The slightly weird Option<T> in output allows pushdown to full columns.

fn get_range(&self, start: u64, output: &mut [T])

Fills an output buffer with the fast field values associated with the DocId going from start to start + output.len().