tidb scanner 代码
文件路径：/store/driver/txn/scanner.go
/ Copyright 2021 PingCAP, Inc.
/
/ Licensed under the Apache License, Version 2.0 (the "License");
/ you may not use this file except in compliance with the License.
/ You may obtain a copy of the License at
/
/ http://www.apache.org/licenses/LICENSE-2.0
/
/ Unless required by applicable law or agreed to in writing, software
/ distributed under the License is distributed on an "AS IS" BASIS,
/ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/ See the License for the specific language governing permissions and
/ limitations under the License.
package txn
import (
"github.com/pingcap/tidb/kv"
"github.com/tikv/client-go/v2/txnkv/txnsnapshot"
)
type tikvScanner struct {
*txnsnapshot.Scanner
}
/ Next returns the next element.
func (s *tikvScanner) Next() error {
err := s.Scanner.Next()
return extractKeyErr(err)
}
func (s *tikvScanner) Key() kv.Key {
return kv.Key(s.Scanner.Key())
}