Crate sp_database[−][src]

The main database trait, allowing Substrate to store data persistently.

Modules

MemDb	This implements `Database` as an in-memory hash map. `commit` is not atomic.
Transaction	A series of changes to the database that can be committed atomically. They do not take effect until passed into `Database::commit`.

Change	An alteration to the database.
ChangeRef	An alteration to the database that references the data.

as_database	Wrap RocksDb database into a trait object that implements `sp_database::Database`
with_get	Call `f` with the value previously stored against `key` and return the result, or `None` if `key` is not currently in the database.
with_lookup	Call `f` with the preimage stored for `hash` and return the result, or `None` if no preimage is currently stored.

An identifier for a column.