Vlad Eroshin

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since Mar 09, 2005
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Recent posts by Vlad Eroshin

I actually used HTTPS. I mean in my deployment diagram I specified HTTPS. to communicate to transmaster. HTTPS is HTTP over SSL.

Vlad
I have submited my part 2 and signed up for part 3. And noticed that I have possibly made a mistake in my assignment. I mean technically this is not a mistake. Not sure how the graders will look at this. Please advise what do you think?

I have designed the communication piece with the transmaster as following. I used JAXB to format XML-RPC messages and send them over HTTP. I also listed two XML schemas for request and response in my assumptions. I did not rely on any standard XML-RPC implementations.
Will this be a problem in my design?

Please advise.

Thank you very much.
Vlad
I am about to submit my solution for part 2. My result JAR size is 960K do you think it will be Ok to submit it? Or I may encounter problems. I think assignment mentions the result Jar size should be between 200K and 400K. I tried everything to bring it from 1.2M to 960K.

Please advise.

Vlad.
Thank you very much, J!

Does this mean that I should calculate thread and connection pools sizes on the Application server. If that the case where should I put this information in the Assumptions section? Or my deployment diagram must reflect this info?

By the way, what is the good approach to calculate all this? Or just by looking on the specs of the Database and Application Servers.

Please advise,
Vlad
How requirements to number of concurrent users affects design? Should we calculate how many server clones to put? Or why do they mention it in the assignment?

Please advise.

Thank you very much.

Vlad
Thank you very much, Ricardo!
How detailed the sequence diagrams should be. Do I need to put each object participating in particulare usecase? I tried to create one diagram and it grew up to 2200 pixels wide.

Please advise.

Thank you very much!

Vlad
Has anyone gone to details of implementation of flight search Algorithm for Part2? Or this is not required. After all it comes to implementing shortest path search algorithm in Graph.

Please advise,
Vlad
Book "The J2EE Architects Handbook. by Derek C. Ashmore." Is very helpful.

I am not certified yet. Still finishing part 2. I saw your posting back in january that you have got certified. Can you please give a bit more details on your part 2:
1) How much of the JAAS did you use in your design?
2) How did you implement Seat Availability for flights on some dates? did you include new entities for this?

Please advise.

Thank you,
Vlad
Guys. What is the point in Using JAAS. I read about it. I implemented a couple of applications with it. Is the only benefit of using it that you can write in config file which login modules to use for different realms.
LoginContext creates Subject with Principals? How Subject can be used later? what is its primary goal?
Thank you very much for reply. Yeap that book is helpful

Vlad.
this may sound stuppid for experts but anyway...

Part 2 Assignment asks to put on Component diagram all of the J2EE components used in the system, Those can include: EJBs, Servlets, JSPs. What is the best way to put JSPs? Just as the component which does not deppend on anything? I mean no arrow that goes to or from it, or how? I understand that each component in the component diagram must have some interface which interface JSP has and if it does who talks through that interface?

My component diagram grows. Is this normal that component diagram is one big picture or should it be splitted into several smal diagrams?

PLease advise,

Thanks,
Vlad.
Hi,

What is the best way to structure document?
The assignment asks to provide Class diagrams, Component diagrams and Sequence diagrams. Should all of these be as the separate chapters in the document or the document should be more structured in relation to usecases? Can I mix class diagrams and sequence diagrams - for example for particular usecase I will display class diagram and sequence diagram?

Please advise.

Thank you very much!

Vlad
Or more details needed?

Clients will generate stubs from the WSDLs provided. There is a number of WebServices clients available on the market.
I will answer that it will connection using JAX-RPC over HTTPS with client authentication.

I am thinking that using webservices will be the most apropriate in this case because HTTP/HTTPS would be the best suitable protocol to communicate over Firewals and proxies.

Vlad.