| Origin: |
GoF 95 |
| Reason: |
A structured object is recursively defined in terms of other objects.
|
| Synopsis: |
Define an interface common to a family of objects.
Build objects in a tree-like structure whose nodes are objects of the
family.
|
| Example: |
A document is made by elements such as pages,
lines, etc., and embedded or nested documents.
|
| Solution: |
| AbstractComponent |
Superclass of the entire family of objects in the composite structure.
|
DocumentElement |
| ConcreteComponent |
Implementations of AbstractComponent, the leaves of
the tree-like structure.
|
Page, Line |
| AbstractComposite |
Superclass of the properly composite objects in the composite structure.
|
Document |
| ConcreteComposite |
Implementations of AbstractComposite, the branches of
the tree-like structure.
|
WordDocument, Spreadsheet |
|
| See also: |
Visitor
|