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

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 160 bytes