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https://issues.apache.org/jira/browse/MYFACES-1802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12558379#action_12558379
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Bernhard Huemer commented on MYFACES-1802:
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The problem is that it seems that noone is using MyFaces 1.1.x in a Java 1.3
environment, but everyone "suffers" from the resulting performance impact. I
wouldn't pay attention to every single case where we can improve MyFaces 1.1.x
for users still working in a Java 1.3 environment (at least not if there's an
impact for our actual userbase and keep in mind that obviously noone has been
using MyFaces 1.1.x in a Java 1.3 environment!). Note that the Spring 2.5
developers have dropped Java 1.3 support ..
Simon, I guess I have to admit that I can't find something regarding method
linkage in the JLS either, but then we can still introduce an additional
indirection, for example by using an interface "ExceptionCauseRetriever" with
two implementations, one assuming that it is running a Java >= 1.4 environment
and the other one using reflection to support backward compatible exceptions
too (just as Mario suggested).
> FacesException and nested exceptions
> ------------------------------------
>
> Key: MYFACES-1802
> URL: https://issues.apache.org/jira/browse/MYFACES-1802
> Project: MyFaces Core
> Issue Type: Bug
> Components: JSR-127
> Affects Versions: 1.1.5
> Reporter: Bernhard Huemer
> Fix For: 1.1.6-SNAPSHOT
>
> Attachments: MyFaces-1802.patch
>
>
> The JSF 1.1 specification requires any implementation to support Java 1.3 and
> that's why the FacesException isn't allowed to utilize builtin exception
> chaining mechanisms (i.e. initCause(), etc..) as they have been introduced in
> Java 1.4. However, the FacesException retains it's cause by delegating to the
> parent's constructor (for example, "super(cause);" or "super(message,
> cause);").
> Although this bug is rather easy to fix, I've assigned the priority level
> 'Major' as it breaks the specification.
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