Prasanna Wamanacharya wrote:Hola Juan,
I totally agree with Antonio. Your web-pages are truly a guiding light for the SCEA preparation.
Would appreciate if you could add your thoughts and recommend some resources for the "Integration and Messaging" objectives.
Muchas Gracias!
Antonio Fornie wrote:Thank you (Prasanna and Juan pablo) very much.
Juan Pablo, I had visited your page and it's really one of the best resources I found. It was a surprise to receive a message from you when I read and recognised your name. Tu página es realmente útil y la tengo en favoritos desde que me decidí a hacer el SCEA 5 ;) In fact you will see my comments and questions in your page soon.
Best regards from Madrid
Erkin Kanlioglu wrote:
Basically, we are at the same point... BTW, Have you started using Scala on your project? Good to hear that somebody convince their manager to use Scala
Erkin Kanlioglu wrote:
If I didn't misinterpret your comment above, GenericDAO is same thing with AbstractFacade. There is even a nice example on google code.
GenericDAO
Thanks again
Prabu Senthyl Arumugam wrote:
2. Same with the Service locator pattern - EJB3 already has dependancy injection?
Prasanna Wamanacharya wrote:Are we expected to remember all the specific annotations, and details of what goes into a deployment descriptor for this exam? (e.g. which annotations can be used to secure web applications, what all can be configured in an EJB deployment descriptor)
Erkin Kanlioglu wrote:
3) TO (Transfer Object)
As far as I can see, most of us discarded using TO as entities are pojo and detached entity can be used in the view tier.
still not sure it is right approach to take as every change on entity might mean change on view as well... Keeping derivative fields on the entity or
putting some even very simple logic on the view to derive a field doesnt sound good.
Duke's Bank Example on JEE is still using TO pattern.
Note: I didnt like to see that Sun's reference implementation is using SFSB heavily even though it can ben solved with SLSB.
Erkin Kanlioglu wrote:Hi
2) I put question marks before Entity as I believe that it would be good to use some abstraction with generics --> Yes genericDAO )
Even though JPA is domain store implementation and easy to use, it is good to have a generic DAO for all basic operation and more specific DAO implementation for getting closer to domain.
For DDD friends, from my perspective
Repository implementations sounds/smells like DAO.
Functional approach is better than object oriented approach to follow to get some information from domain.
Note: I agree that DAO should NOT be accessed/injected as SLSB. Factory which takes EntityManager as a parameter is better solution if you are not using Spring.
Erkin Kanlioglu wrote:Hi
1-) Separation of web tier from application tier is inevitable but it doesn't have to reflect on deployment.
In reality, we deploy web tier and application tier on the same jvm instance and we try to use local executions/calls instead of remote executions. So annotations are there to use and for fast development.
(Clustering between jvm instances which serve web+application)
If we ignore from the beginning these realities, so what is the point investing on these new ideas?
Note: Yes, Ideal solution could be
a) to have different jvm instances for web and application tiers
b) to use remote call between them
c) ssing different physical nodes (even more ideal) and arranging DMZ.
d) then writing Business Delegate, Service Locator
My suggestion would be...
JSP Page --> FacesServlet --> Managed Beans(Facade) --> Stateless Session Beans --> ??? --> Entity
Volker Abel wrote:
How many classes does your class diagram consist of?
P Das wrote:Passed the part I of the exam; there was some hitch with my name having been mis-spelt; cooling my heels over the assignment after having submitted the 'Quotation' for part 2. Sun does not respond.
Going through some of my own architectures that I had done for clients. Can some experienced people give advice on the following?
1) What exactly I need to do in respect of part 2? Only give a few UML diagrams (Class, Component, Package, Sequence)? It appears so from one post around 2003. However, things might have changed now.
2) What is the level of detail required in part 2?
3) How to expedite Sun's sending me links (or some other instrumentality) to register for part 2, pay required fees, and download assignment?
En passant: the questions were quite easy: not lengthy and only thing needed was to keep cool and time for revision.
Cache: The drag and drop questions suck: you cannot place the pieces quickly. I had wasted a lot of time on them and there I lost marks, presumably.
Antonio Fornie wrote:Hello everybody!
I've got a question I'm sure it must be answered before but I've looking for it and I don't find it. So I have to ask it: Is there any url to look for the contents of the SCEA part 1? I've been looking in Sun's page but it's such a sort description I don't know for sure wich contents I must study and how in depth. For example, I don't know if I must study applets, don't know what can I be asked about JSF (or wich version of JSF) and so on!
Thank you very much! bye
Antonio