thalladi

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since Oct 30, 2005
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Recent posts by thalladi

Hello all,

I am confused on where the DAOs and Adapters belong to, whether to Business tier or Integration tier? In my design, DAOs are used for searches, Adapters are used for connecting to subsystems. Both are fronted by session beans.

I would appreciate your valuable input.

Thanks,
Satheesh
Hi all,

It is very possible that searches by 2 different users can have common results. I want introduce a caching service in business tier and cache flight search results. When 1st user performs a flight search, I would save the results of 1st search in cache. When 2nd user performs a similar search, I want to reuse the results(only if they are not invalidated) from the cache for this user.

Many issues came to my mind if I decide to have caching service in my design. for e.g.

* process for invalidating the cached results
* incompleteness of these results, if 2nd search is a bit different
and might yield in some additional flights which are not available in cache.

Can somebody please answer these questions for me related to the above description ?

1) Will this design work?
2) Has anyone passed with this kind of caching service(sharing search results of 2 different users) in their design?

Thanks,
Satheesh
Hello all,

When user performs a search for flights, I want to get the regular flights + alternative flights + and all of their prices in a single call, and save these lists in business tier. However, I would return only regular flights to UI. For next call when user select a departure and return flight, I can just get the prices and alternative flights from the business tier itself.

I would appreciate if someone can answer these questions related the above approach.

1) Is there any problem with this approach?
2) Does this kind of design violate use case? I ask this because as per use case this would involve 2 differt user actions.

Thanks,
Satheesh
Hello Ajay,

Congratulations on your success!

Could you please share your approach to solving the assignment and your overall experiences?

Thanks,
Satheesh
I am sure you can understand why it needs to builder if see the example @

http://www.dofactory.com/Patterns/PatternBuilder.aspx

Satheesh
HTTP is stateless and connection based /oriented protocol. HTTP 1.1 was introduced in June 1999. So you can assume questions are based on v1.1

Regards,
Satheesh
Hello Ravindra,

I have a question about pricing alternative flights or selected flight(s).

Does the system show prices for all classes for all flights in this screen? Becuase, when user actually selects seats in next screen system needs to calculate the prices based on class and number of seats user selects. Without knowing # of seats /class how do we price in alternative flights screen? What are your ideas ?

Thanks,
Satheesh
Laxmi, thanks for sharing the links. Could you please send the presentation to me as well? Thanks!

Satheesh
thalladi@gmail.com
Signed Applet does not guarantee any permissions, permsssions have to be granted in policy file.

So answer B is correct as per the information given in problem statement