trie

func (*Database) Close ¶

func (db *Database) Close() error

func (*Database) Compact ¶

func (db *Database) Compact(start []byte, limit []byte) error

Compact flattens the underlying data store for the given key range. In essence, deleted and overwritten versions are discarded, and the data is rearranged to reduce the cost of operations needed to access them.

A nil start is treated as a key before all keys in the data store; a nil limit is treated as a key after all keys in the data store. If both is nil then it will compact entire data store.

func (*Database) Delete ¶

func (db *Database) Delete(key []byte) error

Delete removes the key from the key-value data store.

func (*Database) Get ¶

func (db *Database) Get(key []byte) ([]byte, error)

Get retrieves the given key if it's present in the key-value data store.

func (*Database) Has ¶

func (db *Database) Has(key []byte) (bool, error)

Has retrieves if a key is present in the key-value data store.

func (*Database) NewBatch ¶

func (db *Database) NewBatch() ethdb.Batch

NewBatch creates a write-only database that buffers changes to its host db until a final write is called.

func (*Database) NewIterator ¶

func (db *Database) NewIterator(prefix []byte, start []byte) ethdb.Iterator

NewIterator creates a binary-alphabetical iterator over a subset of database content with a particular key prefix, starting at a particular initial key (or after, if it does not exist).

Note: This method assumes that the prefix is NOT part of the start, so there's no need for the caller to prepend the prefix to the start

func (*Database) Put ¶

func (db *Database) Put(key, val []byte) error

Put inserts the given value into the key-value data store.

func (*Database) Stat ¶

func (db *Database) Stat(property string) (string, error)

Stat returns a particular internal stat of the database.