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Validating domain objects hibernate part 5

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I recently had a chance to actually use the new Bean Validation spec. As the developer of the Bean Validation Framework for Spring (part of the springmodules project) it of course feels a bit weird to ditch all the work I’ve done, but at the same time, it also feels good to use a standard spec that very soon will be finalized.As a member of the JSR-303 expert group (although quite a quiet member) I can assure you that the guys (special kudo’s to Emmanuel Bernard) worked really hard to come up with a specification that will fit in many of the different programming models and technologies we all use (e.g. In this writing, I’d like to show you a how you can integrate Bean Validation in your Spring based application, especially if you’re using Spring MVC.Possibly the best example of this power in Groovy and Grails is the creation of the Grails Object Relational Mapper (GORM).However, we can’t all just go to our managers and say “Hey, let’s rewrite this entire application in Grails”.In addition Grails is written in Groovy, a dynamic language that can run on the JVM and interact as if they were Java classes.

validating domain objects hibernate part 5-50validating domain objects hibernate part 5-86

Hibernate is free software that is distributed under the GNU Lesser General Public License 2.1.

When using an XML file, Hibernate can generate skeleton source code for the persistence classes. Hibernate can use the XML file or the Java annotations to maintain the database schema.

There are provided facilities to arrange one-to-many and many-to-many relationships between classes.

We kicked off our hunt for JPA implementation patterns with the Data Access Object pattern and continued with the discussion of how to manage bidirectional associations.

This week we touch upon a subject that may seem trivial at first: how to save an entity..