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DbTx

reth_ethereum::provider::db::transaction

Trait DbTx 

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pub trait DbTx: Debug + Send {
    type Cursor<T: Table>: DbCursorRO<T> + Send;
    type DupCursor<T: DupSort>: DbDupCursorRO<T> + DbCursorRO<T> + Send;

    // Required methods
    fn get<T>(
        &self,
        key: <T as Table>::Key,
    ) -> Result<Option<<T as Table>::Value>, DatabaseError>
       where T: Table;
    fn get_by_encoded_key<T>(
        &self,
        key: &<<T as Table>::Key as Encode>::Encoded,
    ) -> Result<Option<<T as Table>::Value>, DatabaseError>
       where T: Table;
    fn commit(self) -> Result<(), DatabaseError>;
    fn abort(self);
    fn cursor_read<T>(&self) -> Result<Self::Cursor<T>, DatabaseError>
       where T: Table;
    fn cursor_dup_read<T>(&self) -> Result<Self::DupCursor<T>, DatabaseError>
       where T: DupSort;
    fn entries<T>(&self) -> Result<usize, DatabaseError>
       where T: Table;
    fn disable_long_read_transaction_safety(&mut self);
}
Available on crate feature provider only.
Expand description

Read only transaction

Required Associated Types§

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type Cursor<T: Table>: DbCursorRO<T> + Send

Cursor type for this read-only transaction

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type DupCursor<T: DupSort>: DbDupCursorRO<T> + DbCursorRO<T> + Send

DupCursor type for this read-only transaction

Required Methods§

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fn get<T>( &self, key: <T as Table>::Key, ) -> Result<Option<<T as Table>::Value>, DatabaseError>
where T: Table,

Get value by an owned key

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fn get_by_encoded_key<T>( &self, key: &<<T as Table>::Key as Encode>::Encoded, ) -> Result<Option<<T as Table>::Value>, DatabaseError>
where T: Table,

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.

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fn commit(self) -> Result<(), DatabaseError>

Commit for read only transaction will consume and free transaction and allows freeing of memory pages

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fn abort(self)

Aborts transaction

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fn cursor_read<T>(&self) -> Result<Self::Cursor<T>, DatabaseError>
where T: Table,

Iterate over read only values in table.

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fn cursor_dup_read<T>(&self) -> Result<Self::DupCursor<T>, DatabaseError>
where T: DupSort,

Iterate over read only values in dup sorted table.

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fn entries<T>(&self) -> Result<usize, DatabaseError>
where T: Table,

Returns number of entries in the table.

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fn disable_long_read_transaction_safety(&mut self)

Disables long-lived read transaction safety guarantees.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§