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