47 lines
1.5 KiB
Go
47 lines
1.5 KiB
Go
// Copyright 2014 The ql Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSES/QL-LICENSE file.
|
|
|
|
// Copyright 2015 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,
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package rset
|
|
|
|
import (
|
|
"github.com/pingcap/tidb/field"
|
|
"github.com/pingcap/tidb/plan"
|
|
)
|
|
|
|
// Recordset is an abstract result set interface to help get data from Plan.
|
|
type Recordset interface {
|
|
// Data filter for input data.
|
|
Do(f func(data []interface{}) (more bool, err error)) error
|
|
|
|
// Fields gets result fields.
|
|
Fields() (fields []*field.ResultField, err error)
|
|
|
|
// FirstRow gets first row data.
|
|
FirstRow() (row []interface{}, err error)
|
|
|
|
// Rows gets rows data by using limit/offset.
|
|
// Negative limit means no limit.
|
|
Rows(limit, offset int) (rows [][]interface{}, err error)
|
|
|
|
// Next returns the next row, nil row means there is no more to return.
|
|
Next() (row *plan.Row, err error)
|
|
|
|
// Close closes the underlying iterator, call Next after Close will
|
|
// restart the iteration.
|
|
Close() error
|
|
}
|