// Copyright 2014 The go-ethereum Authors // This file is part of the go-ethereum library. // // go-ethereum is free software: you can redistribute it and/or modify // it under the terms of the GNU Lesser General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // The go-ethereum library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . package common // Database interface type Database interface { Put(key []byte, value []byte) error Get(key []byte) ([]byte, error) Delete(key []byte) error Close() Flush() error }