pub struct Tx<K: TransactionKind> {
pub inner: Transaction<K>,
/* private fields */
}
Available on crate feature
mdbx
only.Expand description
Wrapper for the libmdbx transaction.
Fields§
§inner: Transaction<K>
Libmdbx-sys transaction.
Implementations§
Source§impl<K: TransactionKind> Tx<K>
impl<K: TransactionKind> Tx<K>
Sourcepub const fn new(inner: Transaction<K>) -> Self
pub const fn new(inner: Transaction<K>) -> Self
Creates new Tx
object with a RO
or RW
transaction.
Sourcepub fn get_dbi<T: Table>(&self) -> Result<MDBX_dbi, DatabaseError>
pub fn get_dbi<T: Table>(&self) -> Result<MDBX_dbi, DatabaseError>
Gets a table database handle if it exists, otherwise creates it.
Sourcepub fn new_cursor<T: Table>(&self) -> Result<Cursor<K, T>, DatabaseError>
pub fn new_cursor<T: Table>(&self) -> Result<Cursor<K, T>, DatabaseError>
Create db Cursor
Trait Implementations§
Source§impl<K: TransactionKind> DbTx for Tx<K>
impl<K: TransactionKind> DbTx for Tx<K>
Source§fn cursor_dup_read<T: DupSort>(
&self,
) -> Result<Self::DupCursor<T>, DatabaseError>
fn cursor_dup_read<T: DupSort>( &self, ) -> Result<Self::DupCursor<T>, DatabaseError>
Iterate over read only values in database.
Source§fn entries<T: Table>(&self) -> Result<usize, DatabaseError>
fn entries<T: Table>(&self) -> Result<usize, DatabaseError>
Returns number of entries in the table using cheap DB stats invocation.
Source§fn disable_long_read_transaction_safety(&mut self)
fn disable_long_read_transaction_safety(&mut self)
Disables long-lived read transaction safety guarantees, such as backtrace recording and timeout.
Source§fn get<T: Table>(
&self,
key: T::Key,
) -> Result<Option<<T as Table>::Value>, DatabaseError>
fn get<T: Table>( &self, key: T::Key, ) -> Result<Option<<T as Table>::Value>, DatabaseError>
Get value by an owned key
Source§fn get_by_encoded_key<T: Table>(
&self,
key: &<T::Key as Encode>::Encoded,
) -> Result<Option<T::Value>, DatabaseError>
fn get_by_encoded_key<T: Table>( &self, key: &<T::Key as Encode>::Encoded, ) -> Result<Option<T::Value>, DatabaseError>
Get value by a reference to the encoded key, especially useful for “raw” keys
that encode to themselves like Address and B256. Doesn’t need to clone a
reference key like
get
.Source§fn commit(self) -> Result<bool, DatabaseError>
fn commit(self) -> Result<bool, DatabaseError>
Commit for read only transaction will consume and free transaction and allows
freeing of memory pages
Source§fn cursor_read<T: Table>(&self) -> Result<Self::Cursor<T>, DatabaseError>
fn cursor_read<T: Table>(&self) -> Result<Self::Cursor<T>, DatabaseError>
Iterate over read only values in table.
Source§impl DbTxMut for Tx<RW>
impl DbTxMut for Tx<RW>
Source§fn put<T: Table>(
&self,
key: T::Key,
value: T::Value,
) -> Result<(), DatabaseError>
fn put<T: Table>( &self, key: T::Key, value: T::Value, ) -> Result<(), DatabaseError>
Put value to database
Source§fn delete<T: Table>(
&self,
key: T::Key,
value: Option<T::Value>,
) -> Result<bool, DatabaseError>
fn delete<T: Table>( &self, key: T::Key, value: Option<T::Value>, ) -> Result<bool, DatabaseError>
Delete value from database
Source§fn cursor_write<T: Table>(&self) -> Result<Self::CursorMut<T>, DatabaseError>
fn cursor_write<T: Table>(&self) -> Result<Self::CursorMut<T>, DatabaseError>
Cursor mut
Source§fn cursor_dup_write<T: DupSort>(
&self,
) -> Result<Self::DupCursorMut<T>, DatabaseError>
fn cursor_dup_write<T: DupSort>( &self, ) -> Result<Self::DupCursorMut<T>, DatabaseError>
DupCursor
mut.Source§impl TableImporter for Tx<RW>
impl TableImporter for Tx<RW>
Source§fn import_table<T, R>(&self, source_tx: &R) -> Result<(), DatabaseError>
fn import_table<T, R>(&self, source_tx: &R) -> Result<(), DatabaseError>
Imports all table data from another transaction.
Source§fn import_table_with_range<T, R>(
&self,
source_tx: &R,
from: Option<<T as Table>::Key>,
to: <T as Table>::Key,
) -> Result<(), DatabaseError>
fn import_table_with_range<T, R>( &self, source_tx: &R, from: Option<<T as Table>::Key>, to: <T as Table>::Key, ) -> Result<(), DatabaseError>
Imports table data from another transaction within a range.
Source§fn import_dupsort<T, R>(&self, source_tx: &R) -> Result<(), DatabaseError>
fn import_dupsort<T, R>(&self, source_tx: &R) -> Result<(), DatabaseError>
Imports all dupsort data from another transaction.
Auto Trait Implementations§
impl<K> !Freeze for Tx<K>
impl<K> !RefUnwindSafe for Tx<K>
impl<K> Send for Tx<K>
impl<K> Sync for Tx<K>
impl<K> Unpin for Tx<K>where
K: Unpin,
impl<K> !UnwindSafe for Tx<K>
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
§impl<T> Conv for T
impl<T> Conv for T
Source§impl<T> DbTxUnwindExt for Twhere
T: DbTxMut,
impl<T> DbTxUnwindExt for Twhere
T: DbTxMut,
Source§fn unwind_table_by_num<T>(&self, num: u64) -> Result<usize, DatabaseError>
fn unwind_table_by_num<T>(&self, num: u64) -> Result<usize, DatabaseError>
Unwind table by some number key.
Returns number of rows unwound. Read more
Source§fn unwind_table<T, F>(
&self,
key: u64,
selector: F,
) -> Result<usize, DatabaseError>
fn unwind_table<T, F>( &self, key: u64, selector: F, ) -> Result<usize, DatabaseError>
Unwind the table to a provided number key.
Returns number of rows unwound. Read more
Source§fn unwind_table_by_walker<T1, T2>(
&self,
range: impl RangeBounds<<T1 as Table>::Key>,
) -> Result<(), DatabaseError>
fn unwind_table_by_walker<T1, T2>( &self, range: impl RangeBounds<<T1 as Table>::Key>, ) -> Result<(), DatabaseError>
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impl<T> FmtForward for T
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Converts self
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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: 112 bytes