Heilien Tsui wrote:Hi all
I am working on assignment Big Smoke Cigar Shop
Any one can explain to me that any differences between the roles of Freight Movers and International Shipping ?
they seem to be the same role, both accept shipping request, just using different technology.
J J Wright wrote:
I agree completely, when we add Business Delegate and Session Facade, we've the complete picture.
Why do you need a Business Delegate with POJO EJBs?
J J Wright wrote:Where does your product catalog come from?
Komandir Kozlov wrote:Hi Rumen,
Thanks for your reply. But both your examples seem not very convincing for me. User accounting? Why do you think we should implement it even if we haven't been requested to? There are a lot of e-commerce sites which allow you to make full buying cycle without logging in. Moreover, I am sure that accounting is such functionality which couldn't be missed by our business analyst if was required. Regarding second example, it seems to me questionable to save shopping cart between sessions even with accounting. Most real-life ecommerces don't do this. Again, you are trying to mind up new use case - Shopping cart saving, but we wasn't required to do this!!!
I understand your point, but with the same success we can mind up many more use cases, which wasn't required. Where is the border line???
mimi mang wrote:Good points! What I want to do is web tier will use Service Locator to locate the service provided by business tier. As for business tier itself, I prefer to use DI as long as it is available. But seems only those session beans and MDBs can use it. For example, if I use EAO/DAO pattern, I have to get the JPA entity manager by ServiceLocator. Otherwide I have to rely on the caller to pass in it to EAO because EAO is a POJO unless you use session bean as the EAO.
mimi mang wrote:ServiceLocator is still useful for those POJO objects that are not managed objects for example Business Objects, DAO/EAOs etc. Even in web tier, I don't prefer to use Dependency Injection with annotation. because it can't logically seperate ejbs from web tier managed beans especially when you need 2 kind of presentation tier such as web client and swing client.
The problem is it really make the diagram messy. not sure if we need draw every dependency line to it...
Komandir Kozlov wrote:Guys, who are working on this assignment or already has finished it and all others. After reading requirements ten times I still don't see any need for use of DB here from provided use cases. Is it possible? I mean that application will be kind of 'not production' w/o DB, but anyway as I understand we need only to complete supplied requirements and not to try to imagine other scenarios. I understand that we can point this in list of assumptions bla bla bla, but still need your view on this.
To make clear that I am not asking for concrete advice for implementation (which is of course prohibited), I just wondering if it is possible at all, as I don't want to loose points only because I didn't make all assumptions (and assumptions can be made recursively ad infinitum ) etc.
SCJP, SCWCD, SCBCD, SCEA (1)
Suresh Gopal wrote:Hello all,
I am currently working on the assignment, and just wondering whether I need to include the some Design Pattern classes in the class diagram ?
For example, I can include the ServiceLocator class, but I am little hesitant since it might clutter the diagram.
Thanks in advance.
Monu Sharma wrote:Some of my questions to start with?
1) So Big smokes cigar wants to establish an eCommerce site?
2) Does the inventory system of BSCS going to talk to inventory of other manufacturers via JMS?
3) To check the availabilty of cigars from other manufacturers, we need to establish a JMS Topic-right?
4) Can we use AJAX for front end or we need to use something from JEE stack only like JSF only?
5) use cases that are coming with the assignment-are they enough-or do we need to create more use cases based
on all possible scenerios?
6) Should we use sequence diagrams or collaboration diagrams? I have read most of the people use sequence diagrams
7) Should we use EJBs or POJOs?
Monu Sharma wrote:I have some doubts regarding "Big Smokes Cigar Shop". anybody else also working on this?
ruben delcastillo wrote:Can be whizlabs trial version taken seriously about the questions it has ?
In evaluation test i think, they have reutilized question of previous version as well, and i have seen question about Jaxb ,jaxp,and stax and i don know if they are really related to specification J 5 EE or are related to SOAP, or Web services generic question.
So i think it is a guide to the exam and i dont know if test are more harder than exam or different topics or questions.