February 2013
Intermediate to advanced
656 pages
21h 26m
English
Content preview from Implementing Domain-Driven DesignBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Validation
The primary reasons to use validation in the model are to check the correctness of any one attribute/property, any whole object, or any composition of objects. We look at three levels of validation in the model. Although there are lots of ways to perform validation, including specialized frameworks/libraries, those are not examined here. Instead, general-purpose approaches are presented, but these can lead to more elaborate approaches.
Validation accomplishes different things. Just because all of the attributes/properties of a domain object are individually valid, that does not mean that the object as a whole is valid. Maybe the combination of two correct attributes invalidates the whole object. Just because a single object as a whole ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.