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The Memento Pattern

DZone's Guide to

The Memento Pattern

Free Resource

The Integration Zone is brought to you in partnership with Cloud Elements.  What’s below the surface of an API integration? Download The Definitive Guide to API Integrations to start building an API strategy.

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:

The State of API Integration Report provides data from the Cloud Elements platform and will help all developers navigate the recent explosion of APIs and the implications of API integrations to work more efficiently in 2017 and beyond.

Topics:

Published at DZone with permission of Cristian Chiovari, DZone MVB. See the original article here.

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