Struct lmdb_zero::ConstAccessor

pub struct ConstAccessor<'txn>(_);

A read-only data accessor obtained from a ConstTransaction.

There is no corresponding ReadAccessor, since there are no additional operations one can do with a known-read-only accessor.

Methods

impl<'txn> ConstAccessor<'txn>

fn get<K: AsLmdbBytes + ?Sized, V: FromLmdbBytes + ?Sized>(&self, db: &Database, key: &K) -> Result<&V>

Get items from a database.

This function retrieves key/data pairs from the database. A reference to the data associated with the given key is returned. If the database supports duplicate keys (DUPSORT) then the first data item for the key will be returned. Retrieval of other items requires the use of cursoring.

The returned memory is valid until the next mutation through the transaction or the end of the transaction (both are enforced through the borrow checker).

Trait Implementations

impl<'txn> Debug for ConstAccessor<'txn>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.