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From "Frank W. Zammetti" <fzli...@omnytex.com>
Subject Re: ajax proj
Date Mon, 02 May 2005 19:36:33 GMT
Woops, a couple of typos in there...

When I talked about "...all the outputting of HTML would be removed...", I
was referring to removing what you see now in the Action.

And the first line of that JSP code should read:

<% ArrayList sortedPresidentsList =
(ArrayList)request.getAttribute("sortedPresidentsList");

-- 
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
http://www.omnytex.com

On Mon, May 2, 2005 3:33 pm, Frank W. Zammetti said:
> Sure! :)
>
> Basically view the entire server portion as one piece... at the end of
> whatever it is that it does, it's returning HTML (whether it's a complete
> page, as usual, or just a snippet, like with Ajax techniques usually).
> Whether that HTML is written directly to response in an Action or a JSP
> processes (which is writing out to response essentially remember), it's
> the same thing.
>
> The fifth example in my webapp from the article shows this, albeit very
> simplistically... the Action just constructs a string from the parameters
> submitted, then shoves that string into a request attribute... the then
> forwards to a JSP, which basically does nothing but outputs the string and
> returns the resultant "page" (the page in this case being nothing but the
> string).
>
> Imagine what the table sorting example would look like with this
> approach... all the outputting of HTML would be removed, we would instead
> do:
>
> request.setAttribute("sortedPresidentsList", sortedPresidentsList);
>
> ...and we'd just do a normal forward to some JSP... in the JSP we might
> do:
>
> <% ArrayListhm = (ArrayList)request.getAttribute("sortedPresidentsList");
> %>
> <table border="1" align="center" cellpadding="2" cellspacing="0">
> <tr>
> <th onClick="retrieveURL('example2RenderTable.do?sortField=firstName');"
> onMouseOver="style.background='#c0c0c0';"
> onMouseOut="style.background='';">First Name</th>
> <th onClick="retrieveURL('example2RenderTable.do?sortField=middleName');"
> onMouseOver="style.background='#c0c0c0';"
> onMouseOut="style.background='';">Middle Name</th>
> <th onClick="retrieveURL('example2RenderTable.do?sortField=lastName');"
> onMouseOver="style.background='#c0c0c0';"
> onMouseOut="style.background='';">Last Name</th>
> <th
> onClick="retrieveURL('example2RenderTable.do?sortField=firstYearInOffice');"
> onMouseOver="style.background='#c0c0c0';"
> onMouseOut="style.background='';">First Year In Office</th>
> <th
> onClick="retrieveURL('example2RenderTable.do?sortField=lastYearInOffice');"
> onMouseOver="style.background='#c0c0c0';"
> onMouseOut="style.background='';">Last Year In Office</th>
> </tr>
> <%
> for (Iterator it = sortedPresidentsList.iterator(); it.hasNext();) {
>   HashMap hm = (HashMap)it.next();
> %>
>   <tr>
>   <td><%=(String)hm.get("firstName")%></td>
>   <td><%=(String)hm.get("middleName")%></td>
>   <td><%=(String)hm.get("lastName")%></td>
>   <td><%=(String)hm.get("firstYearInOffice")%></td>
>   <td><%=(String)hm.get("lastYearInOffice")%></td>
>   </tr>
> <%
> }
> %>
> </table>
>
> Most people would tend to do with with taglibs, but you get the picture :)
>
> --
> Frank W. Zammetti
> Founder and Chief Software Architect
> Omnytex Technologies
> http://www.omnytex.com
>
> On Mon, May 2, 2005 3:20 pm, Rick Reumann said:
>> Frank W. Zammetti wrote the following on 5/2/2005 2:53 PM:
>>
>>> I think most people would tell you to forward to a JSP to generate what
>>> really amounts to just a snippet of HTML...
>>
>> I'm confused though, you can do that? In other words you can make an
>> XMLHttpRequest from one JSP that goes to an Action and in the Action you
>> can forward to another JSP to write the response and the original JSP
>> that called the XMLHttpRequest somehow pulls this into the innerHTML?
>>
>> Do you have an example of this?
>>
>> I'm looking at your table sort and I don't want all the complex display
>> and write out of the table to take place in a Java class. I'd like to do
>> this in the JSP but not sure how that fits into the Ajax cycle.
>>
>>
>> --
>> Rick
>>
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>
>
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