Structural Patterns

Patterns that ease the design by identifying a simple way to realize relationships among entities.

7 patterns in this category

Convert the interface of a class into another interface clients expect.

Decouple an abstraction from its implementation so that the two can vary independently.

Compose objects into tree structures to represent part-whole hierarchies.

Attach additional responsibilities to an object dynamically.

Provide a unified interface to a set of interfaces in a subsystem.

Use sharing to support large numbers of fine-grained objects efficiently.

Provide a surrogate or placeholder for another object to control access to it.