Golang设计模式之组合模式讲解

package main
import "fmt"
type File struct {
    name string
}
func (f *File) search(keyword string) {
    fmt.Printf("Searching for keyword %s in file %s\n", keyword, f.name)
}
func (f *File) getName() string {
    return f.name
}

package main
import "fmt"
type Folder struct {
    components []Component
    name       string
}
func (f *Folder) search(keyword string) {
    fmt.Printf("Serching recursively for keyword %s in folder %s\n", keyword, f.name)
    for _, composite := range f.components {
        composite.search(keyword)
    }
}
func (f *Folder) add(c Component) {
    f.components = append(f.components, c)
}

package main
type Component interface {
    search(string)
}

package main
func main() {
    file1 := &File{name: "File1"}
    file2 := &File{name: "File2"}
    file3 := &File{name: "File3"}
    folder1 := &Folder{
        name: "Folder1",
    }
    folder1.add(file1)
    folder2 := &Folder{
        name: "Folder2",
    }
    folder2.add(file2)
    folder2.add(file3)
    folder2.add(folder1)
    folder2.search("rose")
}