return Result instantiated within Action

[Brad A Cupit <br...@lsu.edu>]

[creating a new thread so as not to hijack the
"ServletRedirectActionResult - is there a way to set parameters?"
thread]

Don Brown said:
>> The easiest solution is to simply return a
>> ServletActionRedirectResult instance from
>> your action method.

I've tried that myself as it seemed a very clean way of returning a
result, but I get a NullPointerException since the ActionMapper isn't
set on the Result. Now I could instead add:

@Inject
public void setActionMapper(ActionMapper actionMapper) { ... }

to my Action, then return a new ServletActionRedirectResult, but the
calling syntax gets a little messy. Here's an example method in the
Action class:

public Result submit() throws Exception {
	ServletActionRedirectResult result = new
		ServletActionRedirectResult("actionName").addParameter(
		"param1", "${value1}");
	result.setActionMapper(actionMapper);
	return result;
}

Can you think of any way that the actionMapper could be set
automatically on Result's which are instantiated inside of an Action? If
not, should I file this as a feature request?

p.s. for others reading this, this approach would imply not implementing
the Action interface's execute() method, since it must return a String.
Instead you can just define any zero-arg public method and it can return
either a String or a Result, and your URLs can use the
actionName!method.action style for referencing a particular method on
the Action.

Brad Cupit
Louisiana State University - UIS

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RE: return Result instantiated within Action

[Brad A Cupit <br...@lsu.edu>]

>> Ah, good point.  Yes, please file this as a request, as it
>> should be pretty easy to do and would make things much easier.

done, thanks!

automatically set ActionMapper for ServletRedirectResult
https://issues.apache.org/struts/browse/WW-2598

Brad Cupit
Louisiana State University - UIS

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Re: return Result instantiated within Action

[Don Brown <do...@gmail.com>]

On Fri, Apr 18, 2008 at 1:22 AM, Brad A Cupit <br...@lsu.edu> wrote:
>  I've tried that myself as it seemed a very clean way of returning a
>  result, but I get a NullPointerException since the ActionMapper isn't
>  set on the Result.
>  <snip />
>  Can you think of any way that the actionMapper could be set
>  automatically on Result's which are instantiated inside of an Action? If
>  not, should I file this as a feature request?

Ah, good point.  Yes, please file this as a request, as it should be
pretty easy to do and would make things much easier.

Don

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