func (db HyperlevelDB) BatchPut(writes []Write) error {
wb := hyperleveldb.NewWriteBatch()
defer wb.Close()
for _, w := range writes {
if w.Value == nil {
wb.Delete(w.Key)
continue
}
wb.Put(w.Key, w.Value)
}
return db.db.Write(db.wopts, wb)
}
func (db HyperlevelDB) Del(start, finish []byte) error {
wb := hyperleveldb.NewWriteBatch()
defer wb.Close()
itr := db.Iterator()
defer itr.Close()
for itr.Seek(start); itr.Valid(); itr.Next() {
k := itr.Key()
if bytes.Compare(k, finish) > 0 {
break
}
wb.Delete(k)
}
if err := itr.Error(); err != nil {
return err
}
return db.db.Write(db.wopts, wb)
}