[ http://issues.apache.org/struts/browse/STR-2905?page=all ]
Ted Husted updated STR-2905:
----------------------------
Fix Version: TBD
There's also the issue of being able to test any change. We'd need to come up
with a Cookbook example that demonstrated server push, so that we could confim
the code actuall works.
> Allow nested tags <include ..> inside an action (<action ...></action>)
> -----------------------------------------------------------------------
>
> Key: STR-2905
> URL: http://issues.apache.org/struts/browse/STR-2905
> Project: Struts 1
> Type: Improvement
> Components: Core
> Versions: 1.2.9
> Environment: System: Microsoft Windows XP (Version 2002 - Service Pack 2)
> App Server: Tomcat 5.5.9
> Struts Version; 1.2.9
> Reporter: Felipe Desiderati e Souza
> Priority: Minor
> Fix For: TBD
>
> I know that is possible to do an include instead of a forward, but it's only
> possible to use in declarations like this:
> ...
> <action path="/something" include="/path/to/my/file.jsp" />
> ...
> So, if I need to do an include using an action that has more than one forward
> and/or include, I can't!!!
> ...
> <action type="myClass" ... />
> <forward name="f1" path="/f1.jsp" /> <!-- This need to be an include. What
> can I do? -->
> <forward name="f2" path="/f2.jsp" />
> <forward name="f3" path="/f3.jsp" />
> </action>
> ...
> Why do I have to do this? Suppose that I need to do a server push. The most
> common use of server push, is show a message (Splash Screen) for the user
> while the system is processing something else. And then, when the process is
> done, the system do an include showing the desire result. But, as I said, to
> do this, we have to do an include, because if we use a forward an error will
> occur, due to fact that we can't forward a request if we already response
> something.
> So for actions with more than one forwards we can't use the server push! I
> guess. First, because the <forward ../> tag doesn't have any attribute that
> tells that this forward should be an include. And second, because doesn't
> exist any nested tag like <include ../> to replace the <forward ../> tag
> inside the action.
> I don't know if exists any problem in use this approach, i.e., add the
> <include ../> tag to struts DTD, and in the Request Processor add a
> verification if it needs to do a forward or an include. Like is done with
> single action, showed in the first example above. So, if we use the first
> example, the Request Processor verifies if it needs to do an forward, if not
> then it verifies if it needs to do an include. As you can see in follow piece
> of code:
> ...
> public void process(HttpServletRequest request, HttpServletResponse
> response) {
> ...
> if (!processForward(request, response, mapping)) {
> return;
> }
>
> if (!processInclude(request, response, mapping)) {
> return;
> }
> ...
> }
> ...
> But if we have to do anything like what was showed in the second example, we
> can't.
> I realize with this solution of adding the tag <include>, we still have the
> backward compatibility and an improvement to setup an include on actions with
> multiples forwards/includes.
> Felipe
--
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
http://issues.apache.org/struts/secure/Administrators.jspa
-
For more information on JIRA, see:
http://www.atlassian.com/software/jira
