gospring

A Go injection library inspired by Java Spring Framework.

Java Spring Framework is a famous IoC framework. This library try to imitate spring's function.

Quick start

1. Define your go structs

   type Astruct struct {
       // native type
       IntValue    int
       StringValue string
   
       // struct type
       Asingleton *Bstruct
       Aprototype *Cstruct
   }
   
   type Bstruct struct {
       Name string
   }
   
   type Cstruct struct {
       Name string
   }

2. Define the beans

   beans := gs.Beans(
       gs.Bean(Astruct{}).
           ID("a_id").
           Property(
               "IntValue",
               123,
           ).
           Property(
               "StringValue",
               "a string",
           ).
           Property(
               "Asingleton",
               gs.Ref("b_id"),
           ).
           Property(
               "Aprototype",
               gs.Ref("c_id"),
           ),
       gs.Bean(Bstruct{}).
           ID("b_id").
           Property(
               "Name",
               "It's B.",
           ),
       gs.Bean(Cstruct{}).
           ID("c_id").
           Property(
               "Name",
               "It's C.",
           ),
   )

3. Put it into a context

   ctx, e := gs.NewApplicationContext(beans...)

4. Create a bean from context

   bean, e := ctx.GetBean("a_id")

5. Use the bean

   json, _ := json.MarshalIndent(bean, "", "    ")
   fmt.Println(string(json))

   {
       "IntValue": 123,
       "StringValue": "a string",
       "Asingleton": {
           "Name": "It's B."
       },
       "Aprototype": {
           "Name": "It's C."
       }
   }