Enum Txn 

pub enum Txn<'a> {
    Write(&'a WriteTransaction),
    Read(&'a ReadTransaction),
}

Either kind of redb transaction — lets a function that only ever reads (.get()/.iter(), never .insert()/.remove()) run against a real WriteTransaction (the crash-safety boundary for a write statement) or a ReadTransaction (so a read-only statement doesn’t have to contend for redb’s single-writer lock at all). WriteTransaction/ ReadTransaction share no common trait in redb itself — open_table/ open_multimap_table are inherent methods on two unrelated structs, returning different concrete types (Table/ReadOnlyTable, MultimapTable/ReadOnlyMultimapTable) — so this (and TableHandle/ MultimapTableHandle below) is a small local abstraction over that, not something redb provides.

Variants

Write(&'a WriteTransaction)

Read(&'a ReadTransaction)

Implementations

impl<'a> Txn<'a>

pub fn open_table<K, V>( &self, def: TableDefinition<'_, K, V>, ) -> Result<TableHandle<'a, K, V>, StorageError>

where K: Key + 'static, V: Value + 'static,

pub fn open_multimap_table<K, V>( &self, def: MultimapTableDefinition<'_, K, V>, ) -> Result<MultimapTableHandle<'a, K, V>, StorageError>

where K: Key + 'static, V: Key + 'static,

Trait Implementations

impl<'a> Clone for Txn<'a>

fn clone(&self) -> Txn<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for Txn<'a>