mirror of
https://github.com/featurebasedb/featurebase.git
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5f662d2bce
this commit changes the way the plan is retrieved; implements Stringer on types.PlanExpression in preparation for HAVING support; removes last vestiges internal float64 arithmetic; implements a filter on PlanOpFilter; fixes various bugs in the PlanOptimizer when rewriting qualified references * fixed selects with unqualified identifiers * handle bad and non-existent query param inputs more appropriately * added test coverage for PlanExpression Stringer Co-authored-by: Matthew Jaffee <jaffee@pilosa.com>
93 lines
2.1 KiB
Go
93 lines
2.1 KiB
Go
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/planner/types"
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)
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// PlanOpQuery is a query - this is the root node of an execution plan
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type PlanOpQuery struct {
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ChildOp types.PlanOperator
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// the list of aggregate terms
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aggregates []types.PlanExpression
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// all the identifiers that are referenced
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referenceList []*qualifiedRefPlanExpression
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sql string
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warnings []string
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}
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var _ types.PlanOperator = (*PlanOpQuery)(nil)
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func NewPlanOpQuery(child types.PlanOperator, sql string) *PlanOpQuery {
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return &PlanOpQuery{
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ChildOp: child,
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warnings: make([]string, 0),
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sql: sql,
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}
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}
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func (p *PlanOpQuery) Schema() types.Schema {
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return p.ChildOp.Schema()
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}
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func (p *PlanOpQuery) Child() types.PlanOperator {
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return p.ChildOp
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}
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func (p *PlanOpQuery) Iterator(ctx context.Context, row types.Row) (types.RowIterator, error) {
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return p.Child().Iterator(ctx, row)
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}
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func (p *PlanOpQuery) Children() []types.PlanOperator {
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return []types.PlanOperator{
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p.ChildOp,
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}
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}
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func (p *PlanOpQuery) WithChildren(children ...types.PlanOperator) (types.PlanOperator, error) {
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if len(children) != 1 {
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return nil, sql3.NewErrInternalf("unexpected number of children '%d'", len(children))
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}
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op := NewPlanOpQuery(children[0], p.sql)
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op.warnings = append(op.warnings, p.warnings...)
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return op, nil
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}
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func (p *PlanOpQuery) 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.TypeName()))
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}
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result["_schema"] = sc
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result["sql"] = p.sql
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result["warnings"] = p.warnings
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result["child"] = p.ChildOp.Plan()
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return result
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}
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func (p *PlanOpQuery) AddWarning(warning string) {
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p.warnings = append(p.warnings, warning)
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}
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func (p *PlanOpQuery) Warnings() []string {
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var w []string
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w = append(w, p.warnings...)
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if p.ChildOp != nil {
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w = append(w, p.ChildOp.Warnings()...)
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}
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return w
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}
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func (p *PlanOpQuery) String() string {
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return ""
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}
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