Oneof Fields
For this message with a oneof field:
package account;
message Profile {
oneof avatar {
string image_url = 1;
bytes image_data = 2;
}
}
the compiler generates the structs:
type Profile struct {
// Types that are valid to be assigned to Avatar:
// *Profile_ImageUrl
// *Profile_ImageData
Avatar isProfile_Avatar `protobuf_oneof:"avatar"`
}
type Profile_ImageUrl struct {
ImageUrl string
}
type Profile_ImageData struct {
ImageData []byte
}
Both *Profile_ImageUrl and *Profile_ImageData implement isProfile_Avatar by providing an empty isProfile_Avatar() method.
The following example shows how to set the field:
p1 := &account.Profile{
Avatar: &account.Profile_ImageUrl{"http://example.com/image.png"},
}
// imageData is []byte
imageData := getImageData()
p2 := &account.Profile{
Avatar: &account.Profile_ImageData{imageData},
}
