| Beginning Java EE 6 Platform with GlassFish 3: From Novice to Professional (Expert's Voice in Java Technology) von | ||||||||||||||||||||||
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Leaves out crucial parts... • • • • • (bewertet mit 1 von 5 Punkten) Alle meine Rezensionen ansehen Rezension bezieht sich auf: Beginning Java EE 6 Platform with GlassFish 3: From Novice to Professional (Expert's Voice in Java Technology) (Taschenbuch) Contrary to the fellow reviewers, I do NOT consider this a good book. The main reason for this is the fact that the author completely ignores "context and dependency injection" (CDI, JSR 299). Hm, CDI is just 1 (of 32) API from the spec, you might think - so what's the fuzz all about? Well, if I had just one sentence to describe the direction of the development from JEE 5 to JEE 6, I'd say "JEE turns stateful". Stateful scopes (like the use-case orientated CDI conversation context) mix with container-controlled life cycle management (managed beans) to a truly stateful implementation of the dependency injection pattern. With CDI, enterprise components interact in a way that is absolutely new to JEE, while on the same time the overdue definition of a "managed bean" (don't mix it with JSF managed beans) lowers the barrier for a container-managed component. With JEE 6, you don't need EJBs in order to inject components or to intercept their method calls. You just need them if you want to use the additional functionality of an application server (security, clustering, transaction, ...). A well-defined CDI-service point interface allows to integrate seamlessly with the container - something unique in the JEE world so far. To me, this book seems just like an updated edition of the (french) JEE 5 predecessor by the same author, which misses a whole bunch of the new and exciting stuff about JEE 6 - EJB 3.0 -> EJB 3.1: "ah, drop the interfaces" - JSF 1.2 -> JSF 2.0: "use view parameters" - JPA 1 -> JPA 2: "delete cascades to orphants now" - Interceptors: "revisiting the JEE 5 implementation" (ignoring the new loosely coupling in JEE 6) Well that's all not bad, and most certainly not false. But as I said: The author misses the story behind JEE 6... BTW: Whoever thinks "this guy is just a CDI nerd": I'm not. Please take the extra minute and compare the content of this book of the content of the official Sun JEE 6 tutorial. you'll find out that CDI is one of the just five major content parts they divided their tutorial into. Eine Rezension von Ein Kunde vom 29. Juni 2010 | ||||||||||||||||||||||
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