Sladescross's Blog

Blogging about Sharepoint related stuff

Notification Design Pattern October 1, 2010

Filed under: Design Patterns,Notification Design Pattern — sladescross @ 9:21 am

http://martinfowler.com/eaaDev/Notification.html

In its simplest form, a notification can just be a collection of strings which are error messages that the domain generates while it’s doing its work. With each validation that the domain layer makes, each failure results in an error added to the notification. However it makes sense to give the notification a more explicit interface than this. A notification object will typically have methods for adding errors that use error codes rather than strings, and convenience methods to tell if the notification has any errors present.

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