-
Notifications
You must be signed in to change notification settings - Fork 5.8k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge branch 'master' into partition-table-split
- Loading branch information
Showing
101 changed files
with
3,768 additions
and
710 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,169 @@ | ||
| // Copyright 2019 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 bindinfo | ||
|
|
||
| import "github.com/pingcap/parser/ast" | ||
|
|
||
| // BindHint will add hints for originStmt according to hintedStmt' hints. | ||
| func BindHint(originStmt, hintedStmt ast.StmtNode) ast.StmtNode { | ||
| switch x := originStmt.(type) { | ||
| case *ast.SelectStmt: | ||
| return selectBind(x, hintedStmt.(*ast.SelectStmt)) | ||
| default: | ||
| return originStmt | ||
| } | ||
| } | ||
|
|
||
| func selectBind(originalNode, hintedNode *ast.SelectStmt) *ast.SelectStmt { | ||
| if hintedNode.TableHints != nil { | ||
| originalNode.TableHints = hintedNode.TableHints | ||
| } | ||
| if originalNode.From != nil { | ||
| originalNode.From.TableRefs = resultSetNodeBind(originalNode.From.TableRefs, hintedNode.From.TableRefs).(*ast.Join) | ||
| } | ||
| if originalNode.Where != nil { | ||
| originalNode.Where = exprBind(originalNode.Where, hintedNode.Where).(ast.ExprNode) | ||
| } | ||
|
|
||
| if originalNode.Having != nil { | ||
| originalNode.Having.Expr = exprBind(originalNode.Having.Expr, hintedNode.Having.Expr) | ||
| } | ||
|
|
||
| if originalNode.OrderBy != nil { | ||
| originalNode.OrderBy = orderByBind(originalNode.OrderBy, hintedNode.OrderBy) | ||
| } | ||
|
|
||
| if originalNode.Fields != nil { | ||
| origFields := originalNode.Fields.Fields | ||
| hintFields := hintedNode.Fields.Fields | ||
| for idx := range origFields { | ||
| origFields[idx].Expr = exprBind(origFields[idx].Expr, hintFields[idx].Expr) | ||
| } | ||
| } | ||
| return originalNode | ||
| } | ||
|
|
||
| func orderByBind(originalNode, hintedNode *ast.OrderByClause) *ast.OrderByClause { | ||
| for idx := 0; idx < len(originalNode.Items); idx++ { | ||
| originalNode.Items[idx].Expr = exprBind(originalNode.Items[idx].Expr, hintedNode.Items[idx].Expr) | ||
| } | ||
| return originalNode | ||
| } | ||
|
|
||
| func exprBind(originalNode, hintedNode ast.ExprNode) ast.ExprNode { | ||
| switch v := originalNode.(type) { | ||
| case *ast.SubqueryExpr: | ||
| if v.Query != nil { | ||
| v.Query = resultSetNodeBind(v.Query, hintedNode.(*ast.SubqueryExpr).Query) | ||
| } | ||
| case *ast.ExistsSubqueryExpr: | ||
| if v.Sel != nil { | ||
| v.Sel.(*ast.SubqueryExpr).Query = resultSetNodeBind(v.Sel.(*ast.SubqueryExpr).Query, hintedNode.(*ast.ExistsSubqueryExpr).Sel.(*ast.SubqueryExpr).Query) | ||
| } | ||
| case *ast.PatternInExpr: | ||
| if v.Sel != nil { | ||
| v.Sel.(*ast.SubqueryExpr).Query = resultSetNodeBind(v.Sel.(*ast.SubqueryExpr).Query, hintedNode.(*ast.PatternInExpr).Sel.(*ast.SubqueryExpr).Query) | ||
| } | ||
| case *ast.BinaryOperationExpr: | ||
| if v.L != nil { | ||
| v.L = exprBind(v.L, hintedNode.(*ast.BinaryOperationExpr).L) | ||
| } | ||
| if v.R != nil { | ||
| v.R = exprBind(v.R, hintedNode.(*ast.BinaryOperationExpr).R) | ||
| } | ||
| case *ast.IsNullExpr: | ||
| if v.Expr != nil { | ||
| v.Expr = exprBind(v.Expr, hintedNode.(*ast.IsNullExpr).Expr) | ||
| } | ||
| case *ast.IsTruthExpr: | ||
| if v.Expr != nil { | ||
| v.Expr = exprBind(v.Expr, hintedNode.(*ast.IsTruthExpr).Expr) | ||
| } | ||
| case *ast.PatternLikeExpr: | ||
| if v.Pattern != nil { | ||
| v.Pattern = exprBind(v.Pattern, hintedNode.(*ast.PatternLikeExpr).Pattern) | ||
| } | ||
| case *ast.CompareSubqueryExpr: | ||
| if v.L != nil { | ||
| v.L = exprBind(v.L, hintedNode.(*ast.CompareSubqueryExpr).L) | ||
| } | ||
| if v.R != nil { | ||
| v.R = exprBind(v.R, hintedNode.(*ast.CompareSubqueryExpr).R) | ||
| } | ||
| case *ast.BetweenExpr: | ||
| if v.Left != nil { | ||
| v.Left = exprBind(v.Left, hintedNode.(*ast.BetweenExpr).Left) | ||
| } | ||
| if v.Right != nil { | ||
| v.Right = exprBind(v.Right, hintedNode.(*ast.BetweenExpr).Right) | ||
| } | ||
| case *ast.UnaryOperationExpr: | ||
| if v.V != nil { | ||
| v.V = exprBind(v.V, hintedNode.(*ast.UnaryOperationExpr).V) | ||
| } | ||
| case *ast.CaseExpr: | ||
| if v.Value != nil { | ||
| v.Value = exprBind(v.Value, hintedNode.(*ast.CaseExpr).Value) | ||
| } | ||
| if v.ElseClause != nil { | ||
| v.ElseClause = exprBind(v.ElseClause, hintedNode.(*ast.CaseExpr).ElseClause) | ||
| } | ||
| } | ||
| return originalNode | ||
| } | ||
|
|
||
| func resultSetNodeBind(originalNode, hintedNode ast.ResultSetNode) ast.ResultSetNode { | ||
| switch x := originalNode.(type) { | ||
| case *ast.Join: | ||
| return joinBind(x, hintedNode.(*ast.Join)) | ||
| case *ast.TableSource: | ||
| ts, _ := hintedNode.(*ast.TableSource) | ||
| switch v := x.Source.(type) { | ||
| case *ast.SelectStmt: | ||
| x.Source = selectBind(v, ts.Source.(*ast.SelectStmt)) | ||
| case *ast.UnionStmt: | ||
| x.Source = unionSelectBind(v, hintedNode.(*ast.TableSource).Source.(*ast.UnionStmt)) | ||
| case *ast.TableName: | ||
| x.Source.(*ast.TableName).IndexHints = ts.Source.(*ast.TableName).IndexHints | ||
| } | ||
| return x | ||
| case *ast.SelectStmt: | ||
| return selectBind(x, hintedNode.(*ast.SelectStmt)) | ||
| case *ast.UnionStmt: | ||
| return unionSelectBind(x, hintedNode.(*ast.UnionStmt)) | ||
| default: | ||
| return x | ||
| } | ||
| } | ||
|
|
||
| func joinBind(originalNode, hintedNode *ast.Join) *ast.Join { | ||
| if originalNode.Left != nil { | ||
| originalNode.Left = resultSetNodeBind(originalNode.Left, hintedNode.Left) | ||
| } | ||
|
|
||
| if hintedNode.Right != nil { | ||
| originalNode.Right = resultSetNodeBind(originalNode.Right, hintedNode.Right) | ||
| } | ||
|
|
||
| return originalNode | ||
| } | ||
|
|
||
| func unionSelectBind(originalNode, hintedNode *ast.UnionStmt) ast.ResultSetNode { | ||
| selects := originalNode.SelectList.Selects | ||
| for i := len(selects) - 1; i >= 0; i-- { | ||
| originalNode.SelectList.Selects[i] = selectBind(selects[i], hintedNode.SelectList.Selects[i]) | ||
| } | ||
|
|
||
| return originalNode | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.