Struct tantivy::fastfield::FastFieldReaders

pub struct FastFieldReaders { /* private fields */ }

Provides access to all of the BitpackedFastFieldReader.

Internally, FastFieldReaders have preloaded fast field readers, and just wraps several HashMap.

Implementations

impl FastFieldReaders

pub fn column_opt<T>(&self, field_name: &str) -> Result<Option<Column<T>>>

where T: HasAssociatedColumnType, DynamicColumn: Into<Option<Column<T>>>,

Returns a typed column associated to a given field name.

If no column associated with that field_name exists, or existing columns do not have the required type, returns None.

pub fn column_num_bytes(&self, field: &str) -> Result<ByteCount>

Returns the number of bytes associated with a column.

Returns 0 if the column does not exist.

pub fn column_first_or_default<T>( &self, field: &str ) -> Result<Arc<dyn ColumnValues<T>>>

where T: PartialOrd + Copy + HasAssociatedColumnType + Send + Sync + 'static, DynamicColumn: Into<Option<Column<T>>>,

Returns a typed column value object.

In that column value:

• Rows with no value are associated with the default value.
• Rows with several values are associated with the first value.

pub fn u64(&self, field: &str) -> Result<Column<u64>>

Returns the u64 fast field reader reader associated with field.

If field is not a u64 fast field, this method returns an Error.

pub fn date(&self, field: &str) -> Result<Column<DateTime>>

Returns the date fast field reader reader associated with field.

If field is not a date fast field, this method returns an Error.

pub fn ip_addr(&self, field: &str) -> Result<Column<Ipv6Addr>>

Returns the ip fast field reader reader associated to field.

If field is not a u128 fast field, this method returns an Error.

pub fn str(&self, field_name: &str) -> Result<Option<StrColumn>>

Returns a str column.

pub fn bytes(&self, field_name: &str) -> Result<Option<BytesColumn>>

Returns a bytes column.

pub fn dynamic_column_handle( &self, field_name: &str, column_type: ColumnType ) -> Result<Option<DynamicColumnHandle>>

Returning a dynamic_column_handle.

pub fn dynamic_column_handles( &self, field_name: &str ) -> Result<Vec<DynamicColumnHandle>>

Returning all dynamic_column_handle.

pub fn i64(&self, field_name: &str) -> Result<Column<i64>>

Returns the i64 fast field reader reader associated with field.

If field is not a i64 fast field, this method returns an Error.

pub fn f64(&self, field_name: &str) -> Result<Column<f64>>

Returns the f64 fast field reader reader associated with field.

If field is not a f64 fast field, this method returns an Error.

pub fn bool(&self, field_name: &str) -> Result<Column<bool>>

Returns the bool fast field reader reader associated with field.

If field is not a bool fast field, this method returns an Error.

Trait Implementations

impl Clone for FastFieldReaders

fn clone(&self) -> FastFieldReaders

Returns a copy of the value.

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

Performs copy-assignment from source.