Don, is a Result Selector the same as this? ...

https://issues.apache.org/struts/browse/WW-1330

Frank


-- 
Frank W. Zammetti
Founder and Chief Software Architect
Omnytex Technologies
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Author of "Practical Ajax Projects With Java Technology"
 (2006, Apress, ISBN 1-59059-695-1)
Java Web Parts - http://javawebparts.sourceforge.net
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On Thu, October 26, 2006 1:58 pm, Don Brown wrote:
> Hmm...I don't see any of my replies in those two threads, but maybe
> there was more.  Anyways, I took a look at the DWR stuff, and it looks
> pretty cool.  My only concern is that is requires too much dwr
> configuration.  I wonder if there is a way we could push it into a
> plugin, that by simply dropping the plugin jar in WEB-INF/lib, you'd be
> good to go.  Whether this would mean overriding DWR's Configuration
> object to load config from a bundled dwr.xml file or even pushing the
> whole dwr servlet dispatcher into an action so that the user doesn't
> even need to modify web.xml, I don't know.  The goal would be seamless
> support from DWR without needing a multi-step configuration process, and
> without duplicate features such as type converters.
>
> Still, this doesn't solve the need for transparent JSON, XML, and
> partial HTML support.  I have an idea for that, which I'll spin off into
> another thread: Result Selectors.
>
> Don
>
> Alexandru Popescu wrote:
>> On 10/26/06, Don Brown <[EMAIL PROTECTED]> wrote:
>>> Ah, those discussions after JavaOne:
>>>
>>> http://www.mail-archive.com/dev@struts.apache.org/msg22396.html
>>> http://www.mail-archive.com/dev@struts.apache.org/msg22381.html
>>>
>>> To be honest, I didn't really follow them at the time.
>>
>> Still, I remember you participating to the discussion :))
>>
>>> What code came out of it, other than the webwork dwr package?  If
>>> that code is for
>>> webwork, then I'd imagine it wouldn't work with Struts 2.
>>>
>>
>> As it is right now... no I don't think it will; but the changes should
>> be absolutely minimal.
>>
>> ./alex
>> --
>> .w( the_mindstorm )p.
>>
>>> Don
>>>
>>> On 10/25/06, Alexandru Popescu <[EMAIL PROTECTED]>
>>> wrote:
>>> > On 10/26/06, Don Brown <[EMAIL PROTECTED]> wrote:
>>> > > Hmm...probably because I didn't know about it :)
>>> >
>>> > .... perhaps  :-)
>>> > > Should we move the code back into Struts 2?
>>> >
>>> > At some point I guess it may make sense to do this. For the moment
>>> > (and until it stabilizes and the struts2 stabilizes), I think it is
>>> > better for it out there.
>>> >
>>> > >  What exactly does it do?
>>> >
>>> > Simply put it allows you to call from DWR a normal action, passing
>>> > through its normal execution chain. The result can be the rendered
>>> > result (as in normal action invocations) or a serialized action
>>> object
>>> > (as in <ww:action executeResult="false" />).
>>> >
>>> > ./alex
>>> > --
>>> > .w( the_mindstorm )p.
>>> >
>>> > > Don
>>> > >
>>> > > Alexandru Popescu wrote:
>>> > > > Wille, I have contributed a long time ago some (similar?) code
>>> to DWR.
>>> > > > You can find it in the DWR trunk (a webwork package) . This
>>> > > > integration code is based on some work I initially done for
>>> InfoQ.com.
>>> > > >
>>> > > > Sure, if you find places where your ideas look better then my
>>> approach
>>> > > > I would be happy to hear from you and improve it. I am a bit
>>> puzzled
>>> > > > that Don haven't pointed you to this existing code, as the
>>> discussions
>>> > > > about where this code should live have been public by that time.
>>> > > >
>>> > > > ./alex
>>> > > > --
>>> > > > .w( the_mindstorm )p.
>>> > > >
>>> > > >
>>> > > > On 10/26/06, Wille Faler <[EMAIL PROTECTED]> wrote:
>>> > > >> Hi.
>>> > > >> I raised the question today on Don Browns blog about being
>>> able to have
>>> > > >> integration between Struts2 and DWR, to get a full MVC model
>>> if you only
>>> > > >> want to re-render a snippet of a web-page.
>>> > > >> I am not sure if this has been discussed previously, but Don
>>> encouraged
>>> > > >> me to send my ideas if I had any, so here goes:
>>> > > >> When I have done AJAX-based stuff, 9 times out of 10, all I
>>> really want
>>> > > >> to do i execute some business logic, and re-render a portion
>>> of a page.
>>> > > >> This would seem to fit well with a traditional MVC-approach,
>>> with the
>>> > > >> exception that I don't want to re-render the full page.
>>> > > >>
>>> > > >> Earlier this year, I implemented such a simple framework,
>>> basically
>>> > > >> using Webwork2/XWork and DWR, adding some code to glue it all
>>> together.
>>> > > >> It consists of the following things:
>>> > > >> - Some generic JavaScript that can interpret parameters
>>> (either from a
>>> > > >> form or URL) into a Map of parameters, akin to what Webwork
>>> uses.
>>> > > >> - A Controller that is called by DWR, taking the Map, a
>>> callback-target
>>> > > >> (in the web-page) and the name of an action as its arguments.
>>> This
>>> > > >> Controller then invokes an xwork ActionProxy to invoke the
>>> Action.
>>> > > >> - Custom Result-implementations for getting JSP-elements
>>> defined in the
>>> > > >> xwork results. These results use the DWR
>>> > > >> WebContextFactory.get().forwardToString() functionality, to
>>> get the
>>> > > >> resulting JSP-snippet as a String.
>>> > > >> - Said Result can then be sent back by the Controller through
>>> DWR, which
>>> > > >> is then handled by generic JavaScript and rendered to the
>>> predefined
>>> > > >> callback-target on the page.
>>> > > >> - When using forms, it can also do AJAX-based validation which
>>> makes use
>>> > > >> of proper Xwork-validation.
>>> > > >>
>>> > > >> As I said, I have already written code for this, it is quite
>>> compact and
>>> > > >> only a few hundred lines (11 implementation classes + generic
>>> JavaScript
>>> > > >> + dwr config), so obviously this integration is quite easy to
>>> create. I
>>> > > >> would love to see something similar within the upcoming Struts2!
>>> > > >> I haven't attached the code to this mail, but it is available
>>> for
>>> > > >> download here: www.infonatural.com/ajax-mvc.zip (including
>>> > > >> jar-dependencies and some unit-tests, 3.6mb).
>>> > > >>
>>> > > >> If anyone wants to pick the code for ideas, or adapt it, feel
>>> free to do
>>> > > >> so as long as you retain the original @author comments as part
>>> of it (I
>>> > > >> am the sole copyright holder of the code, and you may use it
>>> under the
>>> > > >> ASF if you want).
>>> > > >> It would probably need some minor improvements to make it more
>>> in line
>>> > > >> with the rest of the Struts2-code (so tags work etc), as I
>>> only did the
>>> > > >> code originally for my needs and didn't bother doing more than
>>> I needed
>>> > > >> at the time.
>>> > > >>
>>> > > >> I apologise if this or something similar is already part of
>>> Struts2, but
>>> > > >> I got the impression that it may not be.
>>> > > >>
>>> > > >> regards
>>> > > >> Wille Faler
>>> > > >>
>>> > > >>
>>> > > >>
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