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The Memento Pattern

DZone's Guide to

The Memento Pattern

Free Resource

Today’s data climate is fast-paced and it’s not slowing down. Here’s why your current integration solution is not enough. Brought to you in partnership with Liaison Technologies.

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:

Is iPaaS solving the right problems? Not knowing the fundamental difference between iPaaS and iPaaS+ could cost you down the road. Brought to you in partnership with Liaison Technologies.

Topics:

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

Opinions expressed by DZone contributors are their own.

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