This commit is contained in:
jianzhiyao
2020-10-29 19:05:32 +08:00
parent 508105d32a
commit f8fb50999b
9 changed files with 38 additions and 39 deletions

View File

@@ -0,0 +1,103 @@
package order_clause
import (
"github.com/astaxie/beego/client/orm/clauses"
"strings"
)
type Sort int8
const (
None Sort = 0
Ascending Sort = 1
Descending Sort = 2
)
type Option func(order *Order)
type Order struct {
column string
sort Sort
isRaw bool
}
func Clause(options ...Option) *Order {
o := &Order{}
for _, option := range options {
option(o)
}
return o
}
func (o *Order) GetColumn() string {
return o.column
}
func (o *Order) GetSort() Sort {
return o.sort
}
func (o *Order) SortString() string {
switch o.GetSort() {
case Ascending:
return "ASC"
case Descending:
return "DESC"
}
return ``
}
func (o *Order) IsRaw() bool {
return o.isRaw
}
func ParseOrder(expressions ...string) []*Order {
var orders []*Order
for _, expression := range expressions {
sort := Ascending
column := strings.ReplaceAll(expression, clauses.ExprSep, clauses.ExprDot)
if column[0] == '-' {
sort = Descending
column = column[1:]
}
orders = append(orders, &Order{
column: column,
sort: sort,
})
}
return orders
}
func Column(column string) Option {
return func(order *Order) {
order.column = strings.ReplaceAll(column, clauses.ExprSep, clauses.ExprDot)
}
}
func sort(sort Sort) Option {
return func(order *Order) {
order.sort = sort
}
}
func SortAscending() Option {
return sort(Ascending)
}
func SortDescending() Option {
return sort(Descending)
}
func SortNone() Option {
return sort(None)
}
func Raw() Option {
return func(order *Order) {
order.isRaw = true
}
}

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@@ -0,0 +1,144 @@
package order_clause
import (
"testing"
)
func TestClause(t *testing.T) {
var (
column = `a`
)
o := Clause(
Column(column),
)
if o.GetColumn() != column {
t.Error()
}
}
func TestSortAscending(t *testing.T) {
o := Clause(
SortAscending(),
)
if o.GetSort() != Ascending {
t.Error()
}
}
func TestSortDescending(t *testing.T) {
o := Clause(
SortDescending(),
)
if o.GetSort() != Descending {
t.Error()
}
}
func TestSortNone(t *testing.T) {
o1 := Clause(
SortNone(),
)
if o1.GetSort() != None {
t.Error()
}
o2 := Clause()
if o2.GetSort() != None {
t.Error()
}
}
func TestRaw(t *testing.T) {
o1 := Clause()
if o1.IsRaw() {
t.Error()
}
o2 := Clause(
Raw(),
)
if !o2.IsRaw() {
t.Error()
}
}
func TestColumn(t *testing.T) {
o1 := Clause(
Column(`aaa`),
)
if o1.GetColumn() != `aaa` {
t.Error()
}
}
func TestParseOrder(t *testing.T) {
orders := ParseOrder(
`-user__status`,
`status`,
`user__status`,
)
t.Log(orders)
if orders[0].GetSort() != Descending {
t.Error()
}
if orders[0].GetColumn() != `user.status` {
t.Error()
}
if orders[1].GetColumn() != `status` {
t.Error()
}
if orders[1].GetSort() != Ascending {
t.Error()
}
if orders[2].GetColumn() != `user.status` {
t.Error()
}
}
func TestOrder_GetColumn(t *testing.T) {
o := Clause(
Column(`user__id`),
)
if o.GetColumn() != `user.id` {
t.Error()
}
}
func TestOrder_GetSort(t *testing.T) {
o := Clause(
SortDescending(),
)
if o.GetSort() != Descending {
t.Error()
}
}
func TestOrder_IsRaw(t *testing.T) {
o1 := Clause()
if o1.IsRaw() {
t.Error()
}
o2 := Clause(
Raw(),
)
if !o2.IsRaw() {
t.Error()
}
}