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package driver
import (
"errors"
)
var (
ErrTxSupport = errors.New("transaction is not supported")
)
type IDB interface {
Close() error
Get(key []byte) ([]byte, error)
Put(key []byte, value []byte) error
Delete(key []byte) error
NewIterator() IIterator
NewWriteBatch() IWriteBatch
NewSnapshot() (ISnapshot, error)
Begin() (Tx, error)
}
type ISnapshot interface {
Get(key []byte) ([]byte, error)
NewIterator() IIterator
Close()
}
type IIterator interface {
Close() error
First()
Last()
Seek(key []byte)
Next()
Prev()
Valid() bool
Key() []byte
Value() []byte
}
type IWriteBatch interface {
Put(key []byte, value []byte)
Delete(key []byte)
Commit() error
Rollback() error
}
type Tx interface {
Get(key []byte) ([]byte, error)
Put(key []byte, value []byte) error
Delete(key []byte) error
NewIterator() IIterator
NewWriteBatch() IWriteBatch
Commit() error
Rollback() error
}
|
