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Optimize the sql generator hot path

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This commit is contained in:
Vikram Rangnekar
2019-06-07 20:53:08 -04:00
parent 5f6ea226a3
commit 0b7512cf94
6 changed files with 453 additions and 397 deletions
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14
qcode/parse.go
View File

@ -12,7 +12,7 @@ var (
errEOT = errors.New("end of tokens")
)
type parserType int16
type parserType int32
const (
maxFields = 100
@ -48,14 +48,14 @@ func (o *Operation) Reset() {
}
type Field struct {
ID int16
ID int32
ParentID int32
Name string
Alias string
Args []Arg
argsA [10]Arg
ParentID int16
Children []int16
childrenA [10]int16
Children []int32
childrenA [10]int32
}
type Arg struct {
@ -277,7 +277,7 @@ func (p *Parser) parseFields(fields []Field) ([]Field, error) {
return nil, errors.New("expecting an alias or field name")
}
fields = append(fields, Field{ID: int16(len(fields))})
fields = append(fields, Field{ID: int32(len(fields))})
f := &fields[(len(fields) - 1)]
f.Args = f.argsA[:0]
f.Children = f.childrenA[:0]
@ -288,7 +288,7 @@ func (p *Parser) parseFields(fields []Field) ([]Field, error) {
if f.ID != 0 {
intf := st.Peek()
pid, ok := intf.(int16)
pid, ok := intf.(int32)
if !ok {
return nil, fmt.Errorf("14: unexpected value %v (%t)", intf, intf)

14
qcode/qcode.go
View File

@ -29,8 +29,8 @@ type Column struct {
}
type Select struct {
ID int16
ParentID int16
ID int32
ParentID int32
RelID uint64
Args map[string]*Node
AsList bool
@ -42,7 +42,7 @@ type Select struct {
OrderBy []*OrderBy
DistinctOn []string
Paging Paging
Children []int16
Children []int32
}
type Exp struct {
@ -197,8 +197,8 @@ func (com *Compiler) CompileQuery(query string) (*QCode, error) {
}
func (com *Compiler) compileQuery(op *Operation) (*Query, error) {
id := int16(0)
parentID := int16(-1)
id := int32(0)
parentID := int32(0)
selects := make([]Select, 0, 5)
st := util.NewStack()
@ -219,7 +219,7 @@ func (com *Compiler) compileQuery(op *Operation) (*Query, error) {
}
intf := st.Pop()
fid, ok := intf.(int16)
fid, ok := intf.(int32)
if !ok {
return nil, fmt.Errorf("15: unexpected value %v (%t)", intf, intf)
@ -236,7 +236,7 @@ func (com *Compiler) compileQuery(op *Operation) (*Query, error) {
ID: id,
ParentID: parentID,
Table: tn,
Children: make([]int16, 0, 5),
Children: make([]int32, 0, 5),
}
if s.ID != 0 {