StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PODesign patterns to facilitate these behaviours (audit trail behaviour and undo)
text
Body
copied!<p>I am working on a system that needs to exhibit these behaviours:</p> <ol> <li>Audit Trail</li> <li>Undo / Revert to a particular version (such an action will itself be audit logged)</li> </ol> <p>I have seen a slightly similar question <a href="https://stackoverflow.com/questions/328898/implementing-audit-trail-for-objects-in-c">here</a>, but it deals with only part of what I'm trying to do. Further more, I want to capture the entire life cycle of an object (i.e. CRUD).</p> <p>The way I intend to implement this is as follows:</p> <ol> <li>Have a ChangeManager class based on the observer pattern</li> <li>Derive my objects from a base object that "wraps up" changes in a command pattern</li> <li>Notify the ChangeManager with the command object on any of the CRUD events</li> </ol> <p>Note: A 'change' Command will consist of:</p> <ul> <li>an (ordered) collection of 2-tuples detailing the field change (prev, new)</li> <li>id of user that made the change</li> <li>timestamp of the change</li> </ul> <p>This is just "off of the top of my head" - and there may be holes in the approach I am thinking of taking - I would appreciate some help from people who have implemented this sort of behaviour before, and also general advise, pros and cons on the approach I have outlined above - or maybe a better/alternative approach. A snippet or two to point me in the right direction will also be greatly appreciated!.</p> <p>I will be using C# as the implementation language.</p>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload