mirror of
https://github.com/featurebasedb/featurebase.git
synced 2026-08-28 10:54:59 +00:00
7c936471cc
* first cut of working (slowly) bulk insert; table valued functions and a tuple data type to support time quantums * oversight * filter pushdown implementation; bulk insert * addressed some linter issues
106 lines
2.6 KiB
Go
106 lines
2.6 KiB
Go
// Copyright 2021 Molecula Corp. All rights reserved.
|
|
|
|
package planner
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
"github.com/molecula/featurebase/v3/sql3"
|
|
"github.com/molecula/featurebase/v3/sql3/planner/types"
|
|
)
|
|
|
|
// PlanOpAlterTable plan operator to alter a table.
|
|
type PlanOpAlterTable struct {
|
|
planner *ExecutionPlanner
|
|
tableName string
|
|
operation alterOperation
|
|
oldColumnName string
|
|
newColumnName string
|
|
columnDef *createTableField
|
|
warnings []string
|
|
}
|
|
|
|
func NewPlanOpAlterTable(p *ExecutionPlanner, tableName string, operation alterOperation, oldColumnName string, newColumnName string, columnDef *createTableField) *PlanOpAlterTable {
|
|
return &PlanOpAlterTable{
|
|
planner: p,
|
|
tableName: tableName,
|
|
operation: operation,
|
|
oldColumnName: oldColumnName,
|
|
newColumnName: newColumnName,
|
|
columnDef: columnDef,
|
|
warnings: make([]string, 0),
|
|
}
|
|
}
|
|
|
|
func (p *PlanOpAlterTable) Plan() map[string]interface{} {
|
|
result := make(map[string]interface{})
|
|
result["_op"] = fmt.Sprintf("%T", p)
|
|
result["tableName"] = p.tableName
|
|
return result
|
|
}
|
|
|
|
func (p *PlanOpAlterTable) AddWarning(warning string) {
|
|
p.warnings = append(p.warnings, warning)
|
|
}
|
|
|
|
func (p *PlanOpAlterTable) Warnings() []string {
|
|
return p.warnings
|
|
}
|
|
|
|
func (p *PlanOpAlterTable) String() string {
|
|
return ""
|
|
}
|
|
|
|
func (p *PlanOpAlterTable) Schema() types.Schema {
|
|
return types.Schema{}
|
|
}
|
|
|
|
func (p *PlanOpAlterTable) Children() []types.PlanOperator {
|
|
return []types.PlanOperator{}
|
|
}
|
|
|
|
func (p *PlanOpAlterTable) Iterator(ctx context.Context, row types.Row) (types.RowIterator, error) {
|
|
return &alterTableRowIter{
|
|
planner: p.planner,
|
|
operation: p.operation,
|
|
tableName: p.tableName,
|
|
columnDef: p.columnDef,
|
|
oldColumnName: p.oldColumnName,
|
|
}, nil
|
|
}
|
|
|
|
func (p *PlanOpAlterTable) WithChildren(children ...types.PlanOperator) (types.PlanOperator, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
type alterTableRowIter struct {
|
|
planner *ExecutionPlanner
|
|
operation alterOperation
|
|
tableName string
|
|
columnDef *createTableField
|
|
oldColumnName string
|
|
}
|
|
|
|
var _ types.RowIterator = (*alterTableRowIter)(nil)
|
|
|
|
func (i *alterTableRowIter) Next(ctx context.Context) (types.Row, error) {
|
|
switch i.operation {
|
|
case alterOpAdd:
|
|
_, err := i.planner.schemaAPI.CreateField(ctx, i.tableName, i.columnDef.name, i.columnDef.fos...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
case alterOpDrop:
|
|
err := i.planner.schemaAPI.DeleteField(ctx, i.tableName, i.oldColumnName)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
case alterOpRename:
|
|
return nil, sql3.NewErrInternal("column rename is unimplemented")
|
|
|
|
}
|
|
return nil, types.ErrNoMoreRows
|
|
}
|