Golang sqlparser.Statement类代码示例

原作者: [db:作者] 来自: [db:来源] 收藏邀请

本文整理汇总了Golang中github.com/flike/kingshard/sqlparser.Statement类的典型用法代码示例。如果您正苦于以下问题：Golang Statement类的具体用法？Golang Statement怎么用？Golang Statement使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了Statement类的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: generateSelectSql

func (r *Router) generateSelectSql(plan *Plan, stmt sqlparser.Statement) error {
	sqls := make(map[string][]string)
	node, ok := stmt.(*sqlparser.Select)
	if ok == false {
		return errors.ErrStmtConvert
	}
	if len(plan.RouteNodeIndexs) == 0 {
		return errors.ErrNoRouteNode
	}
	if len(plan.RouteTableIndexs) == 0 {
		buf := sqlparser.NewTrackedBuffer(nil)
		stmt.Format(buf)
		nodeName := r.Nodes[0]
		sqls[nodeName] = []string{buf.String()}
	} else {
		tableCount := len(plan.RouteTableIndexs)
		for i := 0; i < tableCount; i++ {
			tableIndex := plan.RouteTableIndexs[i]
			nodeIndex := plan.Rule.TableToNode[tableIndex]
			nodeName := r.Nodes[nodeIndex]
			selectSql := r.rewriteSelectSql(plan, node, tableIndex)
			if _, ok := sqls[nodeName]; ok == false {
				sqls[nodeName] = make([]string, 0, tableCount)
			}
			sqls[nodeName] = append(sqls[nodeName], selectSql)
		}
	}
	plan.RewrittenSqls = sqls
	return nil
}

开发者ID:flike，项目名称:kingshard，代码行数:30，代码来源:router.go

示例2: generateUpdateSql

func (r *Router) generateUpdateSql(plan *Plan, stmt sqlparser.Statement) error {
	sqls := make(map[string][]string)
	node, ok := stmt.(*sqlparser.Update)
	if ok == false {
		return errors.ErrStmtConvert
	}
	if len(plan.RouteNodeIndexs) == 0 {
		return errors.ErrNoRouteNode
	}
	if len(plan.RouteTableIndexs) == 0 {
		buf := sqlparser.NewTrackedBuffer(nil)
		stmt.Format(buf)
		nodeName := r.Nodes[0]
		sqls[nodeName] = []string{buf.String()}
	} else {
		nodeCount := len(plan.RouteNodeIndexs)
		if 1 < nodeCount {
			golog.Error("Router", "generateUpdateSql", errors.ErrUpdateInMulti.Error(), 0,
				"RouteNodeIndexs", plan.RouteNodeIndexs)
			return errors.ErrUpdateInMulti
		}
		tableCount := len(plan.RouteTableIndexs)
		for i := 0; i < tableCount; i++ {
			buf := sqlparser.NewTrackedBuffer(nil)
			buf.Fprintf("update %v%v",
				node.Comments,
				node.Table,
			)
			fmt.Fprintf(buf, "_%04d", plan.RouteTableIndexs[i])
			buf.Fprintf(" set %v%v%v%v",
				node.Exprs,
				node.Where,
				node.OrderBy,
				node.Limit,
			)
			tableIndex := plan.RouteTableIndexs[i]
			nodeIndex := plan.Rule.TableToNode[tableIndex]
			nodeName := r.Nodes[nodeIndex]
			if _, ok := sqls[nodeName]; ok == false {
				sqls[nodeName] = make([]string, 0, tableCount)
			}
			sqls[nodeName] = append(sqls[nodeName], buf.String())
		}

	}
	plan.RewrittenSqls = sqls
	return nil
}

开发者ID:velsai，项目名称:kingshard，代码行数:48，代码来源:router.go

示例3: generateSelectSql

func (r *Router) generateSelectSql(plan *Plan, stmt sqlparser.Statement) error {
	sqls := make(map[string][]string)
	node, ok := stmt.(*sqlparser.Select)
	if ok == false {
		return ErrStmtConvert
	}
	if len(plan.RouteNodeIndexs) == 0 {
		return ErrNoRouteNode
	}
	if len(plan.RouteTableIndexs) == 0 {
		buf := sqlparser.NewTrackedBuffer(nil)
		stmt.Format(buf)
		nodeName := r.Nodes[0]
		sqls[nodeName] = []string{buf.String()}
	} else {
		tableCount := len(plan.RouteTableIndexs)
		for i := 0; i < tableCount; i++ {
			buf := sqlparser.NewTrackedBuffer(nil)

			buf.Fprintf("select %v%s%v from %v",
				node.Comments,
				node.Distinct,
				node.SelectExprs,
				node.From,
			)
			fmt.Fprintf(buf, "_%04d", plan.RouteTableIndexs[i])
			buf.Fprintf("%v%v%v%v%v%s",
				node.Where,
				node.GroupBy,
				node.Having,
				node.OrderBy,
				node.Limit,
				node.Lock,
			)

			tableIndex := plan.RouteTableIndexs[i]
			nodeIndex := plan.Rule.TableToNode[tableIndex]
			nodeName := r.Nodes[nodeIndex]
			if _, ok := sqls[nodeName]; ok == false {
				sqls[nodeName] = make([]string, 0, tableCount)
			}
			sqls[nodeName] = append(sqls[nodeName], buf.String())
		}

	}
	plan.RewrittenSqls = sqls
	return nil
}

开发者ID:npk，项目名称:kingshard，代码行数:48，代码来源:router.go

示例4: generateInsertSql

func (r *Router) generateInsertSql(plan *Plan, stmt sqlparser.Statement) error {
	sqls := make(map[string][]string)
	node, ok := stmt.(*sqlparser.Insert)
	if ok == false {
		return errors.ErrStmtConvert
	}
	if len(plan.RouteNodeIndexs) == 0 {
		return errors.ErrNoRouteNode
	}
	if len(plan.RouteTableIndexs) == 0 {
		buf := sqlparser.NewTrackedBuffer(nil)
		stmt.Format(buf)
		nodeName := r.Nodes[0]
		sqls[nodeName] = []string{buf.String()}
	} else {
		tableCount := len(plan.RouteTableIndexs)
		for i := 0; i < tableCount; i++ {
			buf := sqlparser.NewTrackedBuffer(nil)
			tableIndex := plan.RouteTableIndexs[i]
			nodeIndex := plan.Rule.TableToNode[tableIndex]
			nodeName := r.Nodes[nodeIndex]

			buf.Fprintf("insert %vinto ", node.Comments)
			table := sqlparser.String(node.Table)
			if table[len(table)-1] == '`' {
				fmt.Fprintf(buf, "%s_%04d`", table[:len(table)-1], plan.RouteTableIndexs[i])
			} else {
				fmt.Fprintf(buf, "%s_%04d", table, plan.RouteTableIndexs[i])
			}

			buf.Fprintf("%v %v%v",
				node.Columns,
				plan.Rows[tableIndex],
				node.OnDup)

			if _, ok := sqls[nodeName]; ok == false {
				sqls[nodeName] = make([]string, 0, tableCount)
			}
			sqls[nodeName] = append(sqls[nodeName], buf.String())
		}

	}
	plan.RewrittenSqls = sqls
	return nil
}

开发者ID:snower，项目名称:kingshard，代码行数:45，代码来源:router.go

示例5: generateInsertSql

func (r *Router) generateInsertSql(plan *Plan, stmt sqlparser.Statement) error {
	sqls := make(map[string][]string)
	node, ok := stmt.(*sqlparser.Insert)
	if ok == false {
		return ErrStmtConvert
	}
	if len(plan.RouteNodeIndexs) == 0 {
		return ErrNoRouteNode
	}
	if len(plan.RouteTableIndexs) == 0 {
		buf := sqlparser.NewTrackedBuffer(nil)
		stmt.Format(buf)
		nodeName := r.Nodes[0]
		sqls[nodeName] = []string{buf.String()}
	} else {
		nodeCount := len(plan.RouteNodeIndexs)
		if 1 < nodeCount {
			golog.Error("Router", "generateInsertSql", ErrInsertInMulti.Error(), 0)
			return ErrInsertInMulti
		}
		tableCount := len(plan.RouteTableIndexs)
		for i := 0; i < tableCount; i++ {
			buf := sqlparser.NewTrackedBuffer(nil)
			buf.Fprintf("insert %vinto %v", node.Comments, node.Table)
			fmt.Fprintf(buf, "_%04d", plan.RouteTableIndexs[i])
			buf.Fprintf("%v %v%v",
				node.Columns,
				node.Rows,
				node.OnDup)

			tableIndex := plan.RouteTableIndexs[i]
			nodeIndex := plan.Rule.TableToNode[tableIndex]
			nodeName := r.Nodes[nodeIndex]
			if _, ok := sqls[nodeName]; ok == false {
				sqls[nodeName] = make([]string, 0, tableCount)
			}
			sqls[nodeName] = append(sqls[nodeName], buf.String())
		}

	}
	plan.RewrittenSqls = sqls
	return nil
}

开发者ID:npk，项目名称:kingshard，代码行数:43，代码来源:router.go

示例6: generateSelectSql

func (r *Router) generateSelectSql(plan *Plan, stmt sqlparser.Statement) error {
	sqls := make(map[string][]string)
	node, ok := stmt.(*sqlparser.Select)
	if ok == false {
		return errors.ErrStmtConvert
	}
	if len(plan.RouteNodeIndexs) == 0 {
		return errors.ErrNoRouteNode
	}
	if len(plan.RouteTableIndexs) == 0 {
		buf := sqlparser.NewTrackedBuffer(nil)
		stmt.Format(buf)
		nodeName := r.Nodes[0]
		sqls[nodeName] = []string{buf.String()}
	} else {
		tableCount := len(plan.RouteTableIndexs)
		for i := 0; i < tableCount; i++ {
			buf := sqlparser.NewTrackedBuffer(nil)
			buf.Fprintf("select %v%s%v from ",
				node.Comments,
				node.Distinct,
				node.SelectExprs,
			)
			switch v := (node.From[0]).(type) {
			case *sqlparser.AliasedTableExpr:
				if len(v.As) != 0 {
					fmt.Fprintf(buf, "%s_%04d AS %s",
						sqlparser.String(v.Expr),
						plan.RouteTableIndexs[i],
						string(v.As),
					)
				} else {
					fmt.Fprintf(buf, "%s_%04d",
						sqlparser.String(v.Expr),
						plan.RouteTableIndexs[i],
					)
				}
			case *sqlparser.JoinTableExpr:
				if ate, ok := (v.LeftExpr).(*sqlparser.AliasedTableExpr); ok {
					if len(ate.As) != 0 {
						fmt.Fprintf(buf, "%s_%04d AS %s",
							sqlparser.String(ate.Expr),
							plan.RouteTableIndexs[i],
							string(ate.As),
						)
					} else {
						fmt.Fprintf(buf, "%s_%04d",
							sqlparser.String(ate.Expr),
							plan.RouteTableIndexs[i],
						)
					}
				} else {
					fmt.Fprintf(buf, "%s_%04d",
						sqlparser.String(v.LeftExpr),
						plan.RouteTableIndexs[i],
					)
				}
				buf.Fprintf(" %s %v", v.Join, v.RightExpr)
				if v.On != nil {
					buf.Fprintf(" on %v", v.On)
				}
			default:
				fmt.Fprintf(buf, "%s_%04d",
					sqlparser.String(node.From[0]),
					plan.RouteTableIndexs[i],
				)
			}
			buf.Fprintf("%v%v%v%v%s",
				node.Where,
				node.GroupBy,
				node.Having,
				node.OrderBy,
				node.Lock,
			)

			tableIndex := plan.RouteTableIndexs[i]
			nodeIndex := plan.Rule.TableToNode[tableIndex]
			nodeName := r.Nodes[nodeIndex]
			if _, ok := sqls[nodeName]; ok == false {
				sqls[nodeName] = make([]string, 0, tableCount)
			}
			sqls[nodeName] = append(sqls[nodeName], buf.String())
		}

	}
	plan.RewrittenSqls = sqls
	return nil
}

开发者ID:zhaoweikid，项目名称:kingshard，代码行数:88，代码来源:router.go

注：本文中的github.com/flike/kingshard/sqlparser.Statement类示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。