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Optimize parse constraint (#4153) 

* for Config.cacheStore store PreparedStmtDB key

* invalid db error and value and invalid value length error (#4151)

* support named params in Select API  (#4142)

* adds support for named arguments in select

* changes clause identifies and adds test

* optimize match english letters and midline

Co-authored-by: Ratan Phayade <ratanphayade@users.noreply.github.com>
This commit is contained in:
heige 2021-03-08 10:21:33 +08:00 committed by GitHub
parent 221d0a0ec1
commit 02cb40531e
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 8 additions and 5 deletions
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6
schema/check.go
View File

@ -6,8 +6,8 @@ import (
)
var (
// match English letters and midline
regEnLetterAndmidline = regexp.MustCompile("^[A-Za-z-_]+$")
// reg match english letters and midline
regEnLetterAndMidline = regexp.MustCompile("^[A-Za-z-_]+$")
)
type Check struct {
@ -22,7 +22,7 @@ func (schema *Schema) ParseCheckConstraints() map[string]Check {
for _, field := range schema.FieldsByDBName {
if chk := field.TagSettings["CHECK"]; chk != "" {
names := strings.Split(chk, ",")
if len(names) > 1 && regEnLetterAndmidline.MatchString(names[0]) {
if len(names) > 1 && regEnLetterAndMidline.MatchString(names[0]) {
checks[names[0]] = Check{Name: names[0], Constraint: strings.Join(names[1:], ","), Field: field}
} else {
if names[0] == "" {

7
schema/relationship.go
View File

@ -3,7 +3,6 @@ package schema
import (
"fmt"
"reflect"
"regexp"
"strings"
"github.com/jinzhu/inflection"
@ -536,7 +535,11 @@ func (rel *Relationship) ParseConstraint() *Constraint {
settings = ParseTagSetting(str, ",")
)
if idx != -1 && regexp.MustCompile("^[A-Za-z-_]+$").MatchString(str[0:idx]) {
// optimize match english letters and midline
// The following code is basically called in for.
// In order to avoid the performance problems caused by repeated compilation of regular expressions,
// it only needs to be done once outside, so optimization is done here.
if idx != -1 && regEnLetterAndMidline.MatchString(str[0:idx]) {
name = str[0:idx]
} else {
name = rel.Schema.namer.RelationshipFKName(*rel)