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State pattern
Return to Finite-state machine, Design patterns, State (computer science), Stateless, Stateful, Persistence, Storing State
“There is no such thing as a stateless architecture. All applications store state somewhere” - Alex Chircop, CEO, StorageOS
- Snippet from Wikipedia: State pattern
The state pattern is a behavioral software design pattern that allows an object to alter its behavior when its internal state changes. This pattern is close to the concept of finite-state machines. The state pattern can be interpreted as a strategy pattern, which is able to switch a strategy through invocations of methods defined in the pattern's interface.
The state pattern is used in computer programming to encapsulate varying behavior for the same object, based on its internal state. This can be a cleaner way for an object to change its behavior at runtime without resorting to conditional statements and thus improve maintainability.: 395
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