Struct redb::ReadOnlyMultimapTable

pub struct ReadOnlyMultimapTable<K: Key + 'static, V: Key + 'static> { /* private fields */ }

A read-only multimap table

Implementations

impl<K: Key + 'static, V: Key + 'static> ReadOnlyMultimapTable<K, V>

pub fn get<'a>( &self, key: impl Borrow<K::SelfType<'a>>, ) -> Result<MultimapValue<'static, V>>

This method is like ReadableMultimapTable::get(), but the iterator is reference counted and keeps the transaction alive until it is dropped.

pub fn range<'a, KR>( &self, range: impl RangeBounds<KR>, ) -> Result<MultimapRange<'static, K, V>>

where KR: Borrow<K::SelfType<'a>>,

This method is like ReadableMultimapTable::range(), but the iterator is reference counted and keeps the transaction alive until it is dropped.

Trait Implementations

impl<K: Key + 'static, V: Key + 'static> ReadableMultimapTable<K, V> for ReadOnlyMultimapTable<K, V>

fn get<'a>( &self, key: impl Borrow<K::SelfType<'a>>, ) -> Result<MultimapValue<'_, V>>

Returns an iterator over all values for the given key. Values are in ascending order.

fn range<'a, KR>( &self, range: impl RangeBounds<KR> + 'a, ) -> Result<MultimapRange<'_, K, V>>

where KR: Borrow<K::SelfType<'a>> + 'a,

fn iter(&self) -> Result<MultimapRange<'_, K, V>>

Returns an double-ended iterator over all elements in the table. Values are in ascending order.

impl<K: Key + 'static, V: Key + 'static> ReadableTableMetadata for ReadOnlyMultimapTable<K, V>

fn stats(&self) -> Result<TableStats>

Retrieves information about storage usage for the table

fn len(&self) -> Result<u64>

Returns the number of entries in the table

fn is_empty(&self) -> Result<bool>

Returns true if the table is empty