Short answer: there is no dedicated debug option for CDI (as no such thing is required by the spec), and no dedicated debug option for Weld. Long Answer: There is a lot you can do on your own. Familiarise yourself with the extension mechanism of CDI, and you’ll discover that you can easily (really!) write … Read more
In Servlets 3.0 you don’t need a web.xml for many cases, however, sometimes it’s required or just useful. Your case is just one of them – there is no special annotations to define welcome-file list or error-pages. Another thing is – would you really like to have them hardcoded? There are some valid use-cases for … Read more
What does Weld do/give you? Weld is the reference implementation of the abstract JSR-299 API, which is better known as CDI, Contexts and Dependency Injection, an API which is provided through javax.enterprise.context and javax.enterprise.inject packages. How does it relate to Java EE 6? JSR-299 is part of Java EE 6 (JSR-316). How would one use … Read more
These classes (JSR 311: JAX-RS: The JavaTM API for RESTful Web Services) are not part of the JDK. You need to include appropriate JAR file to your CLASSPATH. You can find the API e.g. in maven repository. Also check out apache-cxf, jersey (reference implementation), resteasy from JBoss, restlet and few other JAX-RS implementations.
Instead of max one should use CriteriaBuilder.greatest for Timestamp (and for Date, String and other Comparables as well). And if you ever need MIN for Timestamp, then use least method instead Similar kind of issue can be be faced with less/greater/equal comparisons. Firs one accepts argument that extends Number, second one is for other comparables: … Read more
The persistent property means that the container is required to persist the timer state to a database. This is important if you need to guarantee that the timer will fire even if the server is taken offline (intentionally or crash). When the server comes back online, it is required to execute missed timers. Setting a … Read more
@EJB injects EJBs only, but @Inject can be used to inject POJOs rather than EJBs. However, @Inject requires that your archive be a BDA (contain beans.xml for EE 6, or implicitly in EE 7). @Inject also has additional CDI-specific capabilities (scopes, interceptors, etc.), but those capabilities incur extra overhead. Application servers have support for specifying … Read more
That’s not really correct. Standalone is fine for production. It’s commonly used in production, especially when you only need one instance of the server. Domain is used when you run several instances of JBoss AS and you want a single point where you can control configuration from. You can read more about it in the … Read more
The accepted answer requires mocking a lot of code, including the persistence layer. Use an embedded container to test the actual beans, instead; otherwise, mocking the persistence layer results in code that barely tests anything useful. Use a session bean with an entity manager that references a persistence unit: @Stateless public class CommentService { @PersistenceContext(unitName … Read more
You can use annotation @XmlTransient to ignore fields. Put this annotation on field itself or its getter.