Struct tantivy_columnar::ColumnarReader

pub struct ColumnarReader { /* private fields */ }

The ColumnarReader makes it possible to access a set of columns associated to field names.

Implementations

impl ColumnarReader

pub fn open<F>(file_slice: F) -> Result<ColumnarReader>

where FileSlice: From<F>,

Opens a new Columnar file.

pub fn num_rows(&self) -> RowId

pub fn iter_columns( &self ) -> Result<impl Iterator<Item = (String, DynamicColumnHandle)> + '_>

pub fn list_columns(&self) -> Result<Vec<(String, DynamicColumnHandle)>>

pub async fn read_columns_async( &self, column_name: &str ) -> Result<Vec<DynamicColumnHandle>>

pub fn read_columns( &self, column_name: &str ) -> Result<Vec<DynamicColumnHandle>>

Get all columns for the given column name.

There can be more than one column associated to a given column name, provided they have different types.

pub fn num_columns(&self) -> usize

Return the number of columns in the columnar.

Trait Implementations

impl Clone for ColumnarReader

fn clone(&self) -> ColumnarReader

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnarReader

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

Formats the value using the given formatter.