Struct redb::ReadTransaction

pub struct ReadTransaction { /* private fields */ }

A read-only transaction

Read-only transactions may exist concurrently with writes

Implementations

impl ReadTransaction

pub fn open_table<K: Key + 'static, V: Value + 'static>( &self, definition: TableDefinition<'_, K, V> ) -> Result<ReadOnlyTable<K, V>, TableError>

Open the given table

pub fn open_untyped_table( &self, handle: impl TableHandle ) -> Result<ReadOnlyUntypedTable, TableError>

Open the given table without a type

pub fn open_multimap_table<K: Key + 'static, V: Key + 'static>( &self, definition: MultimapTableDefinition<'_, K, V> ) -> Result<ReadOnlyMultimapTable<K, V>, TableError>

Open the given table

pub fn open_untyped_multimap_table( &self, handle: impl MultimapTableHandle ) -> Result<ReadOnlyUntypedMultimapTable, TableError>

Open the given table without a type

pub fn list_tables(&self) -> Result<impl Iterator<Item = UntypedTableHandle>>

List all the tables

pub fn list_multimap_tables( &self ) -> Result<impl Iterator<Item = UntypedMultimapTableHandle>>

List all the multimap tables

pub fn close(self) -> Result<(), TransactionError>

Close the transaction

Transactions are automatically closed when they and all objects referencing them have been dropped, so this method does not normally need to be called. This method can be used to ensure that there are no outstanding objects remaining.

Returns ReadTransactionStillInUse error if a table or other object retrieved from the transaction still references this transaction

Trait Implementations

impl Debug for ReadTransaction

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

Formats the value using the given formatter.