December 2013
Beginner to intermediate
222 pages
5h 13m
English
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Hibernate Criteria Builder
Dynamic finders are great, and as you work with Grails, you will find yourself using them again and again, but they can take you only so far. For one thing, they are limited to top-level properties of the class—you cannot use dynamic finders to search relationships.
Our next search feature is to find TekEvent instances for which a logged-in user has volunteered. Volunteers for an event are in the volunteers collection, which is the result of a one-to-many relationship between TekEvent and TekUser. To search relationships, we must turn to a different tool in the Grails toolbox.
The Criteria Builder in Grails is a very powerful and flexible tool for retrieving objects. It is based on the Hibernate Criteria API, so ...
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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.