database

Documentation

Index

• Constants
• type Batch
• type Database
• type Iterator
• type LevelDB
  • func NewLevelDB(file string) (*LevelDB, error)
  • func (l *LevelDB) Close() error
  • func (l *LevelDB) Delete(key []byte) error
  • func (l *LevelDB) Get(key []byte) ([]byte, error)
  • func (l *LevelDB) NewBatch() Batch
  • func (l *LevelDB) NewIterator(prefix []byte) Iterator
  • func (l *LevelDB) Put(key []byte, value []byte) error

Constants

const BITSPERKEY = 10

used to compute the size of bloom filter bits array . too small will lead to high false positive rate.

Types

type Batch

type Batch interface {
	Put(key []byte, value []byte) error
	Delete(key []byte) error
	Commit() error
	Rollback() error
}

type Database

type Database interface {
	Put(key []byte, value []byte) error
	Get(key []byte) ([]byte, error)
	Delete(key []byte) error
	NewBatch() Batch
	NewIterator(prefix []byte) Iterator
	Close() error
}

type Iterator

type Iterator interface {
	Next() bool
	Prev() bool
	First() bool
	Last() bool
	Seek(key []byte) bool
	Key() []byte
	Value() []byte
	Release()
}

type LevelDB

type LevelDB struct {
	// contains filtered or unexported fields
}

func NewLevelDB

func NewLevelDB(file string) (*LevelDB, error)

func (*LevelDB) Close

func (l *LevelDB) Close() error

func (*LevelDB) Delete

func (l *LevelDB) Delete(key []byte) error

func (*LevelDB) Get

func (l *LevelDB) Get(key []byte) ([]byte, error)

func (*LevelDB) NewBatch

func (l *LevelDB) NewBatch() Batch

func (*LevelDB) NewIterator

func (l *LevelDB) NewIterator(prefix []byte) Iterator

func (*LevelDB) Put

func (l *LevelDB) Put(key []byte, value []byte) error