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Re: Using Struts tag libs

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  To: comp.lang.java.gui,comp.l
Thank you for the Struts intro,
but I don't see how that answers any of my questions...

Thanks,
Oleg.


"Lew" <lew@lewscanon.nospam> wrote in message 
news:yO-dnb_8AK2F5zzbnZ2dnUVZ_qOknZ2d@comcast.com...
> Oleg Konovalov wrote:
>> I am relatively new to Struts [using 1.3].
>>
>> I need to create a form using Struts tag libs with 2 HTML select's 
>> [lists],
>> connected to 2 DB tables, say allUsers and Admins, which would allow
>> to select Administrators from the list of AllUsers.
>>
>> So I will have 3 buttons: Add, Remove and Update.
>> Add - to add selected item(s) from AllUsers list to Admins list [if it is 
>> not there already];
>> Remove- to delete selected item(s) from Admins list;
>> Update - to save changes to Admins list to the Admins DB table.
> ...
>> So how do I manipulate these <html:options collection=AdminList...
>> Struts tags in order to implement Add, Remove, Update  ?  In 
>> onClick="..." ? Is it in JavaScript or in Java ?
>> Any other useful Struts tags for that [especially to do DB 
>> synchronization]?
>> Code snippets ?
>
> Forget Javascript for now.  I'm reading this in one of the many, many Java 
> groups to which you posted your request - you should set follow-up to just 
> one of them.  Struts is primarily a server-side application framework that 
> coordinates the thin-client view artifacts (JSPs) with the application 
> logic.
>
> On the server side the Struts "ActionServlet" (the "controller") will 
> forward the request parameters to an "Action" class, with parameters from 
> the request captured in an "ActionForm" class.  It is the Action class 
> that forwards the request information to business logic and maybe 
> populates the ActionForm with the results, then reports the outcome to 
> Struts.
>
> The Struts framework invokes the execute() method of the Action class, 
> which in turn returns an ActionForward return type object that the Struts 
> framework uses to choose the next view (JSP).  The execute() method 
> coordinates logic invoked via custom logic-class instances (typically 
> JavaBeans) that you write to handle the application-specific behaviors. 
> The ActionForward return object encapsulates the success, failure or other 
> termination state of the execute() invocation.
>
> Values in the ActionForm, session scope or elsewhere may change as a 
> result of the Action object's execute().
>
> The next screen will dutifully show those values.
>
> Struts implements the "Model-View-Controller" paradigm, and supplies the 
> controller and the glue to join the three parts.  Wikipedia is a good 
> source of knowledge for that.  So is Sun.  The JSPs represent the view, 
> and should have no business logic coded in them at all.  The model layer, 
> those server-side classes invoked by the Action classes, handles all 
> logic.  Struts glues the navigation together with its controller.
>
> For more, see:
> <http://struts.apache.org/1.3.8/userGuide/index.html>
>
> -- 
> Lew

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Using Struts tag libs "Oleg Konovalov" <oleg.konovalov@THRWHITE.remove-dii-this> - 2011-04-27 15:37 +0000
  Re: Using Struts tag libs "David Mark" <david.mark@THRWHITE.remove-dii-this> - 2011-04-27 15:37 +0000
    Re: Using Struts tag libs "Lew" <lew@THRWHITE.remove-dii-this> - 2011-04-27 15:37 +0000
      Re: Using Struts tag libs "Richard Cornford" <richard.cornford@THRWHITE.remove-dii-this> - 2011-04-27 15:37 +0000
  Re: Using Struts tag libs "Lew" <lew@THRWHITE.remove-dii-this> - 2011-04-27 15:37 +0000
    Re: Using Struts tag libs "Oleg Konovalov" <oleg.konovalov@THRWHITE.remove-dii-this> - 2011-04-27 15:37 +0000

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