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Screen scraping

 
Goan Balchao
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Question on screen scraping -

Scenario : Existing Legacy with a web interface application in place that should be reused. Assume that a screen scraping solution is to be employed to interface the legacy app.

The presumption that the application has a web interface and that a screen scraping solution is to employed dictates that the screen scraper be placed in the web tier does it not ?
So if the screen scraper is to be accessed by lets say a Swing application, what would you do ?
a) Swing - Servlet - Adapter - Screen Scraper(Web tier) - Legacy App
Web - Screen Scrapper(Web tier) - Legacy App
or
b) Swing - Screen Scraper (in Swing app) - Legacy App
Web - Screen Scraper (in web tier) - Legacy App

a) would mean performing one extra round of Java - HTML conversion
b) would mean replcating the logic in two different place

What would you suggest ?

Thanks,
Hemant.
 
Laxmi Raghu
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Please post your suggestions. My design depends on the outcome of all these discussions. Ranchers, Help us.
 
T Ram
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Screen Scrapers will act as Terminal emulator at legacy system end and it will act as object interface for other end. So Swing - Screen Scraper - Legacy system is should be the way of design...
 
Laxmi Raghu
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Thanks for the info.
 
Goan Balchao
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Well,
I already knew what a screen scraper does .. the question was which choice would one use ? a or b and maybe why
If Swing - Scraper - Legacy(app).. then the Scraper logic needs to get replicated right ? What would be the pros and cons of that.. that is what I was getting at..

Anyway, just on a seperate note.. I am a bit dissapointed at this forum. I have been members of other forums too and the results were helpful, of course. I do realize that many people here are also on a learning curve..but I thought the questions would elicit some discussion at least.
Seems like either the really simple questions get answered.. or some of the contentious ones get dragged on and on. Any real helpful question on the assignment gets sidetracked with .. hey that's your design decision. Yes it is my decision .. put I do neeed to know the pros and cons of my decision as well as any alternatives.. if not.. what's the point of it anyway.

Sorry for the rant.. most probably will be my last post anyway.. can't seem to get too much information for my queries anyway.. (maybe I am asking the wrong Q's.. who knows)
 
Laxmi Raghu
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Hemant, don't say that it's your last question. We need you here to learn something from you / get suggestions. I don't know about other ranchers, but Truthfully for some questions i don't know what to answer. So, kept quite. Atleast you stay with this forum for sometime so that we get help from you.

Regarding screen scraper solution, i don't know much in depth knowledge of it. So, i'm assuming that they alredy provided a web interface to access credit card validation. Anyway , in the CEO, CIO interview, they mentioned that it is going to be rewritten shortly. So, presume that it's already in place and i'm providing an interface to access it. How does it sound like? Any suggestions?
 
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