Using Bean Validation in JavaFX UI

Bean validation is a nice API for for validating Java objects and is included in Java EE 6. But it can also be used anywhere, regardless of the layer. It can be used with or without JPA and in a stand alone Java SE. It formalizes and encourages the validation approach at the domain model level. It helps in de-duplication of the validation logic that we are accustomed to having all over the place - UI, business logic and elsewhere to get it back to the domain model - where it really belongs In the past, people used (and a lot of them still do) anemic model objects, without ever giving a thought to the fact that they were central to their domain. A lot of validation is central to the domain, but was written elsewhere. I have noticed that people are thinking that the validation (and more) should be brought into the fold of the model objects. Bean Validation could serve as a selling point for Domain Driven Design. It worked for me. Back to my point - I was desgining a JavaFX application. Not the ones with animation - but regular boring app, but with a horrendous set of validations. Writing all of them in the UI will be such a pain, in addtion to just not being right. Unknown to me, a backend was starting to take shape in another part of the world, where, among other things, validation was implemented as business logic in Spring POJOs wrapped in Session EJBs (you know, the typical hangover from early Spring-J2EE days). There w...

Date: June, 10 2010
Url: http://www.java.net/blog/srikanth/archive/2010/06/10/using-bean-validation-javafx-ui

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