April 2012
Intermediate to advanced
408 pages
12h 55m
English
Content preview from Spring Roo in Action
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Chapter 3. Database persistence with entities
This chapter covers
- Your business objects and persistence
- Working with entities
- What about validation?
- Searching with finders
In the last chapter, we discussed Spring Roo from a developer’s perspective. We discussed the various component types, and how the Roo shell creates and maintains objects in your projects, hiding tedious, repetitive code behind AspectJdriven.aj files.
In this chapter, you’ll learn how to store and load data from relational databases. You’ll start by defining object-relational mapping (ORM) APIs and the standard Java Persistence API, and then learn how to configure persistence in a project using the Roo shell. Next, you’ll define Roo entities, which are an enhanced ...
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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.