Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Save more on your purchases now! discount-offer-chevron-icon
Savings automatically calculated. No voucher code required.
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Conferences
Free Learning
Arrow right icon
Arrow up icon
GO TO TOP
Developing Middleware in Java EE 8

You're reading from   Developing Middleware in Java EE 8 Build robust middleware solutions using the latest technologies and trends

Arrow left icon
Product type Paperback
Published in Jun 2018
Publisher Packt
ISBN-13 9781788391078
Length 252 pages
Edition 1st Edition
Languages
Tools
Concepts
Arrow right icon
Author (1):
Arrow left icon
Abdalla Mahmoud Abdalla Mahmoud
Author Profile Icon Abdalla Mahmoud
Abdalla Mahmoud
Arrow right icon
View More author details
Toc

Table of Contents (12) Chapters Close

Preface 1. Delving into Java EE 8 FREE CHAPTER 2. Dependency Injection Using CDI 2.0 3. Accessing the Database with JPA 2.1 4. Validating Data with Bean Validation 2.0 5. Exposing Web Services with JAX-RS 2.1 6. Manipulating JSON with JSON-B 1.0 7. Communicating with Different Systems with JMS 2.0 8. Sending Mails with JavaMail 1.6 9. Securing an Application with Java Security 1.0 10. Making Interactive Applications with WebSockets 1.1 11. Other Books You May Enjoy

Graph validation

The bean validation API also supports graph validation, which means that if some object is referencing another one, you can define a constraint that your embedded object should also be validated from the owner's one context, according to the constraints defined in the embedded object.

Let's try this with an example; we will define a Producer class with a constraint on the name attribute as follows:

public class Producer { 
 
    @NotNull 
    private String name; 
 
    // setters and getters here 
 
} 

Then, we will modify our Movie object so it references an instance of the Producer object, as follows:

public class Movie { 
 
    @NotNull 
    private String title; 
    @Valid 
    private Producer producer; 
 
    public Movie() { 
    } 
    // setters and getters here 
} 

Note the @Valid attribute; it tells the bean validator that when validating...

lock icon The rest of the chapter is locked
Register for a free Packt account to unlock a world of extra content!
A free Packt account unlocks extra newsletters, articles, discounted offers, and much more. Start advancing your knowledge today.
Unlock this book and the full library FREE for 7 days
Get unlimited access to 7000+ expert-authored eBooks and videos courses covering every tech area you can think of
Renews at €18.99/month. Cancel anytime