August 2018
Intermediate to advanced
314 pages
8h 9m
English
Content preview from Java EE 8 Design Patterns and Best Practices
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Summary
In this chapter, we explored the fact that the main objective of the Business Delegate is to hide the details of service implementations from the presentation tier. We have also seen that, in some situations, its use has been replaced by CDI technology (this technology is responsible for injecting components into a typesafe way application, such as injecting an EJB component), but we believe that this is not enough. The Business Delegate is still widely used in the treatment of more technical exceptions—for example, when it has remote EJB calls. In addition, the delegate protects the presentation tier from possible changes in the service layer, and conversely, when there are types of clients other than a web browser, using a delegate ...
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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.
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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.