February 2019
Intermediate to advanced
442 pages
11h 46m
English
Content preview from Spring 5.0 Projects
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The persistence layer
When we add a filter option for any entity, JHipster makes the necessary changes to the repository interface corresponding to that entity. In our case, the CountryRepository is now extending the JpaSpecificationExecutor interface, which is used to add Specification capabilities to the repository, as follows:
public interface CountryRepository extends JpaRepository<Country, Long>, JpaSpecificationExecutor<Country>
Spring Data JPA provides a Specification interface to execute the criteria query, which is used to retrieve values from the database with various criteria on database columns.
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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.