forked from Shiloh/githaven
b6a95a8cb3
* Dropped unused codekit config * Integrated dynamic and static bindata for public * Ignore public bindata * Add a general generate make task * Integrated flexible public assets into web command * Updated vendoring, added all missiong govendor deps * Made the linter happy with the bindata and dynamic code * Moved public bindata definition to modules directory * Ignoring the new bindata path now * Updated to the new public modules import path * Updated public bindata command and drop the new prefix
121 lines
2.6 KiB
Go
121 lines
2.6 KiB
Go
// 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 executor
|
|
|
|
import (
|
|
"github.com/juju/errors"
|
|
"github.com/pingcap/tidb/ast"
|
|
"github.com/pingcap/tidb/context"
|
|
"github.com/pingcap/tidb/infoschema"
|
|
"github.com/pingcap/tidb/optimizer/plan"
|
|
)
|
|
|
|
// recordSet wraps an executor, implements ast.RecordSet interface
|
|
type recordSet struct {
|
|
fields []*ast.ResultField
|
|
executor Executor
|
|
}
|
|
|
|
func (a *recordSet) Fields() ([]*ast.ResultField, error) {
|
|
return a.fields, nil
|
|
}
|
|
|
|
func (a *recordSet) Next() (*ast.Row, error) {
|
|
row, err := a.executor.Next()
|
|
if err != nil || row == nil {
|
|
return nil, errors.Trace(err)
|
|
}
|
|
return &ast.Row{Data: row.Data}, nil
|
|
}
|
|
|
|
func (a *recordSet) Close() error {
|
|
return a.executor.Close()
|
|
}
|
|
|
|
type statement struct {
|
|
is infoschema.InfoSchema
|
|
plan plan.Plan
|
|
}
|
|
|
|
func (a *statement) OriginText() string {
|
|
return ""
|
|
}
|
|
|
|
func (a *statement) SetText(text string) {
|
|
return
|
|
}
|
|
|
|
func (a *statement) IsDDL() bool {
|
|
return false
|
|
}
|
|
|
|
func (a *statement) Exec(ctx context.Context) (ast.RecordSet, error) {
|
|
b := newExecutorBuilder(ctx, a.is)
|
|
e := b.build(a.plan)
|
|
if b.err != nil {
|
|
return nil, errors.Trace(b.err)
|
|
}
|
|
|
|
if executorExec, ok := e.(*ExecuteExec); ok {
|
|
err := executorExec.Build()
|
|
if err != nil {
|
|
return nil, errors.Trace(err)
|
|
}
|
|
e = executorExec.StmtExec
|
|
}
|
|
|
|
if len(e.Fields()) == 0 {
|
|
// No result fields means no Recordset.
|
|
defer e.Close()
|
|
for {
|
|
row, err := e.Next()
|
|
if err != nil {
|
|
return nil, errors.Trace(err)
|
|
}
|
|
if row == nil {
|
|
// It's used to insert retry.
|
|
changeInsertValueForRetry(a.plan, e)
|
|
return nil, nil
|
|
}
|
|
}
|
|
}
|
|
|
|
fs := e.Fields()
|
|
for _, f := range fs {
|
|
if len(f.ColumnAsName.O) == 0 {
|
|
f.ColumnAsName = f.Column.Name
|
|
}
|
|
}
|
|
return &recordSet{
|
|
executor: e,
|
|
fields: fs,
|
|
}, nil
|
|
}
|
|
|
|
func changeInsertValueForRetry(p plan.Plan, e Executor) {
|
|
if v, ok := p.(*plan.Insert); ok {
|
|
var insertValue *InsertValues
|
|
if !v.IsReplace {
|
|
insertValue = e.(*InsertExec).InsertValues
|
|
} else {
|
|
insertValue = e.(*ReplaceExec).InsertValues
|
|
}
|
|
v.Columns = insertValue.Columns
|
|
v.Setlist = insertValue.Setlist
|
|
if len(v.Setlist) == 0 {
|
|
v.Lists = insertValue.Lists
|
|
}
|
|
}
|
|
}
|