支持的数据结构

gengine支持的数据结构

gengine主要支持4种数据结构,分别是golang的struct,以及基础类型的map、array和slice, 为了保持简洁、以及语言的无关性, 支持这4种结构的如下操作:

注入struct

注入struct必须是以指针的形式注入,否则无法在规则中改变结构体的属性值,注入结构体示例如下:

user := &User{
	Name: "Calo",
	Age:  0,
	Male: true,
}

dataContext := context.NewDataContext()
//inject
dataContext.Add("User", user)

测试: https://github.com/bilibili/gengine/blob/main/test/mutli_rules_test.go

注入map

gengine只能基于key对map取值或设置值

//define
type MS struct {
    MII *map[int]int
    MSI map[string]int
    MIS map[int]string
}
    
//init
MS := &MS{
	MII: &map[int]int{1: 1},
	MSI: map[string]int{"hello": 1},
	MIS: map[int]string{1: "helwo"},
}
    
//define
var MM map[int]int
MM = map[int]int{1:1000,2:1000}
    
//inject
dataContext := context.NewDataContext()
dataContext.Add("MS", MS)
//single map inject, must be ptr
dataContext.Add("MM", &MM)

测试:https://github.com/bilibili/gengine/blob/main/test/map_slice_array/array_test.go

注入数组

gengine只能基于index对数组取值或设置值,且注入的数组,必须为指针数组,或者附着与结构体指针的数组,当以非指针形式的数组注入dataContext.则只能用index取值,而不能设置值

    
//define
type AS struct {
     MI *[3]int
     MM [4]int
}
    
//init
AS := &AS{
   	MI: &[3]int{},
   	MM: [4]int{},
  }
    
//define
var AA [2]int
AA = [2]int{1, 2}
    
dataContext := context.NewDataContext()
dataContext.Add("PrintName",fmt.Println)
dataContext.Add("AS", AS)
//single array inject, must be ptr
dataContext.Add("AA", &AA)

测试: https://github.com/bilibili/gengine/blob/main/test/map_slice_array/array_test.go

注入slice

gengine只能基于index对切片取值或设置值

    
//define
type SS struct {
	MI []int
	    MM *[]int
    }

    //init
	SS := &SS{
		MI: []int{1,2,3,4},
		MM: &[]int{9,1,34,5},
	}
    
    //define
	var S []int
	S = []int{1, 2, 3}

	dataContext := context.NewDataContext()
	dataContext.Add("PrintName",fmt.Println)
	dataContext.Add("SS", SS)
   	//single slice inject, must be ptr
	dataContext.Add("S", &S)

测试: https://github.com/bilibili/gengine/blob/main/test/map_slice_array/slice_test.go