mirror of
https://github.com/featurebasedb/featurebase.git
synced 2026-08-28 10:54:59 +00:00
c620aae350
* implement CREATE/ALTER/DROP VIEW * fixed failing test * another failing test * fixed some broken serverless tests
102 lines
2.2 KiB
Go
102 lines
2.2 KiB
Go
// Copyright 2023 Molecula Corp. All rights reserved.
|
|
|
|
package planner
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"github.com/molecula/featurebase/v3/sql3"
|
|
"github.com/molecula/featurebase/v3/sql3/planner/types"
|
|
)
|
|
|
|
// PlanOpDropView plan operator to drop a view.
|
|
type PlanOpDropView struct {
|
|
planner *ExecutionPlanner
|
|
viewName string
|
|
ifExists bool
|
|
warnings []string
|
|
}
|
|
|
|
func NewPlanOpDropView(p *ExecutionPlanner, ifExists bool, viewName string) *PlanOpDropView {
|
|
return &PlanOpDropView{
|
|
planner: p,
|
|
viewName: viewName,
|
|
ifExists: ifExists,
|
|
warnings: make([]string, 0),
|
|
}
|
|
}
|
|
|
|
func (p *PlanOpDropView) Plan() map[string]interface{} {
|
|
result := make(map[string]interface{})
|
|
result["_op"] = fmt.Sprintf("%T", p)
|
|
result["viewName"] = p.viewName
|
|
result["isExists"] = p.ifExists
|
|
return result
|
|
}
|
|
|
|
func (p *PlanOpDropView) String() string {
|
|
return ""
|
|
}
|
|
|
|
func (p *PlanOpDropView) AddWarning(warning string) {
|
|
p.warnings = append(p.warnings, warning)
|
|
}
|
|
|
|
func (p *PlanOpDropView) Warnings() []string {
|
|
return p.warnings
|
|
}
|
|
|
|
func (p *PlanOpDropView) Schema() types.Schema {
|
|
return types.Schema{}
|
|
}
|
|
|
|
func (p *PlanOpDropView) Children() []types.PlanOperator {
|
|
return []types.PlanOperator{}
|
|
}
|
|
|
|
func (p *PlanOpDropView) Iterator(ctx context.Context, row types.Row) (types.RowIterator, error) {
|
|
return &dropViewRowIter{
|
|
planner: p.planner,
|
|
ifExists: p.ifExists,
|
|
viewName: p.viewName,
|
|
}, nil
|
|
}
|
|
|
|
func (p *PlanOpDropView) WithChildren(children ...types.PlanOperator) (types.PlanOperator, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
type dropViewRowIter struct {
|
|
planner *ExecutionPlanner
|
|
ifExists bool
|
|
viewName string
|
|
}
|
|
|
|
var _ types.RowIterator = (*dropViewRowIter)(nil)
|
|
|
|
func (i *dropViewRowIter) Next(ctx context.Context) (types.Row, error) {
|
|
err := i.planner.checkAccess(ctx, i.viewName, accessTypeDropObject)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// check in the views table to see if it exists
|
|
v, err := i.planner.getViewByName(i.viewName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if v == nil {
|
|
if i.ifExists {
|
|
return nil, types.ErrNoMoreRows
|
|
}
|
|
return nil, sql3.NewErrViewNotFound(0, 0, i.viewName)
|
|
}
|
|
|
|
err = i.planner.deleteView(i.viewName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return nil, types.ErrNoMoreRows
|
|
}
|