Over a million developers have joined DZone.
{{announcement.body}}
{{announcement.title}}

The Memento Pattern

DZone's Guide to

The Memento Pattern

· Integration Zone ·
Free Resource

SnapLogic is the leading self-service enterprise-grade integration platform. Download the 2018 GartnerMagic Quadrant for Enterprise iPaaS or play around on the platform, risk free, for 30 days.

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:

With SnapLogic’s integration platform you can save millions of dollars, increase integrator productivity by 5X, and reduce integration time to value by 90%. Sign up for our risk-free 30-day trial!

Topics:

Published at DZone with permission of

Opinions expressed by DZone contributors are their own.

{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}