Design Patterns: Composite
Composite pattern is a collection of objects where one of the objects in the collection can branch out. When using this pattern it usually consist of the following elements a component, leaf and composite.
Component:
- is an abstraction of all components, including the composite ones.
- declares the interface for the objects in the composition.
Leaf:
- represents a leaf object in the composition.
- implements all the Component’s methods.
Composite:
- represents a composite component.
- implements methods for manipulating children.
- implements all Component’s methods
Below are some code snippet taken from the design-patterns repository from my github account, the console application is called Composite and uses a Parent (Composite) and Child (Leaf) objects to represent the use of the pattern.
IMember Interface:
The IMember interface represents the Component and it consist of a method signature called Print(). This interface will be implemented by the Parent and Child class and they will also implement the Print() method for outputing information, but I will explain this later.
using System;
namespace composite
{
public interface IMember
{
void Print();
}
}