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The Memento Pattern

DZone's Guide to

The Memento Pattern

· Integration Zone ·
Free Resource

The State of API Integration 2018: Get Cloud Elements’ report for the most comprehensive breakdown of the API integration industry’s past, present, and future.

Description:

The Memento captures and externalizes an object’s internal state so that the object can later be restored to that state. Command can use Memento to maintain the state required for an undo operation. It lets you capture an object’s state so you can restore the object later, so it's very useful for an undo operation.

Without violating encapsulation,capture and externalize an object’s internal state so the the object can be restored to this state later.

Benefits:

Provides easy to implement recovery capability.

When to use:

  •  A snapshot of an object’s state must be saved so that it can be restored to that state later
  • Using a direct interface to obtain the state would expose implementation details and break the object’s encapsulation

Diagram:

Your API is not enough. Learn why (and how) leading SaaS providers are turning their products into platforms with API integration in the ebook, Build Platforms, Not Products from Cloud Elements.

Topics:

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