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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Model Navigation
Reference by identity doesn’t completely prevent navigation through the model. Some will use a Repository (12) from inside an Aggregate for lookup. This technique is called Disconnected Domain Model, and it’s actually a form of lazy loading. There’s a different recommended approach, however: Use a Repository or Domain Service (7) to look up dependent objects ahead of invoking the Aggregate behavior. A client Application Service may control this, then dispatch to the Aggregate:
public class ProductBacklogItemService ... { ... @Transactional public void assignTeamMemberToTask( String aTenantId, String aBacklogItemId, String aTaskId, String aTeamMemberId) ...
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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.