mirror of
https://github.com/featurebasedb/featurebase.git
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f62313762c
* implemented extract ddl; tightened up type related stuff * added some test coverage * review feedback
82 lines
2.1 KiB
Go
82 lines
2.1 KiB
Go
// Copyright 2022 Molecula Corp. All rights reserved.
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package planner
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import (
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"context"
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"fmt"
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"github.com/molecula/featurebase/v3/sql3"
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"github.com/molecula/featurebase/v3/sql3/parser"
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"github.com/molecula/featurebase/v3/sql3/planner/types"
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)
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// PlanOpTableValuedFunction is an operator for a subquery
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type PlanOpTableValuedFunction struct {
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planner *ExecutionPlanner
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callExpr types.PlanExpression
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warnings []string
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}
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func NewPlanOpTableValuedFunction(p *ExecutionPlanner, callExpr types.PlanExpression) *PlanOpTableValuedFunction {
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return &PlanOpTableValuedFunction{
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planner: p,
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callExpr: callExpr,
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warnings: make([]string, 0),
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}
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}
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func (p *PlanOpTableValuedFunction) Schema() types.Schema {
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result := make(types.Schema, 0)
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tvfResultType, ok := p.callExpr.Type().(*parser.DataTypeSubtable)
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if !ok {
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return result
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}
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for _, member := range tvfResultType.Columns {
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result = append(result, &types.PlannerColumn{
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ColumnName: member.Name,
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RelationName: "",
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Type: member.DataType,
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})
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}
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return result
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}
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func (p *PlanOpTableValuedFunction) Iterator(ctx context.Context, row types.Row) (types.RowIterator, error) {
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return nil, sql3.NewErrInternalf("table valued functions are not yet implemented")
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}
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func (p *PlanOpTableValuedFunction) Children() []types.PlanOperator {
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return []types.PlanOperator{}
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}
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func (p *PlanOpTableValuedFunction) WithChildren(children ...types.PlanOperator) (types.PlanOperator, error) {
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return nil, nil
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}
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func (p *PlanOpTableValuedFunction) Plan() map[string]interface{} {
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result := make(map[string]interface{})
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result["_op"] = fmt.Sprintf("%T", p)
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sc := make([]string, 0)
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for _, e := range p.Schema() {
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sc = append(sc, fmt.Sprintf("'%s', '%s', '%s'", e.ColumnName, e.RelationName, e.Type.TypeDescription()))
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}
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result["_schema"] = sc
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return result
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}
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func (p *PlanOpTableValuedFunction) String() string {
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return ""
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}
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func (p *PlanOpTableValuedFunction) AddWarning(warning string) {
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p.warnings = append(p.warnings, warning)
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}
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func (p *PlanOpTableValuedFunction) Warnings() []string {
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var w []string
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w = append(w, p.warnings...)
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return w
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}
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