Can we do this outside of core. I'm not a big fan of extending
functionality of the core beyond the spec. For one, I suspect we'll
have issues with the bridge. Asside from that what if JSF 2.1 defines
a competingmechanism to handle this?
At most this extension belogs in the extensions package.
On Jul 4, 2008, at 8:10 PM, "Leonardo Uribe" <[EMAIL PROTECTED]> wrote:
Hi
I want to see what people think about a possible enhancement of
error handling feature of myfaces, thanks to a suggestion of Martin.
For this purpose, I create a issue on jira ( MYFACES-1889).
The summary of this feature is this:
One possible enhancement to the error handling feature of myfaces
could be the capability of redirect to a jsf page.
I have studied the issue in deep and the thing could be as described
below:
1. Add this configuration to WEB-INF/web.xml
<context-param>
<description>
Handle exceptions with jsf redirect page.
</description>
<param-name>org.apache.myfaces.ERROR_HANDLING_REDIRECT_PAGE</
param-name>
<param-value>true</param-value>
</context-param>
2. Define a navigation rule like this:
<navigation-rule>
<from-view-id>*</from-view-id>
<navigation-case>
<from-outcome>java.lang.NullPointerException</from-
outcome>
<to-view-id>/nullErrorPage.jsp</to-view-id>
</navigation-case>
</navigation-rule>
Note that in from-outcome there is defined the class name of the
error to be redirected by this page.
The first test of this feature has been successful, but there are
some questions to be solved:
1. How to add error information to be displayed (maybe add as a
value on the request scope like exceptionList)
2. How to handle multiple errors, maybe the best is use a special
outcome like org.apache.myfaces.MultipleThrowable
I'll do some test this weekend and add a possible patch of this
feature.
Suggestions are welcome.
regards
Leonardo Uribe
