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From "Jens Bannmann (Created) (JIRA)" <>
Subject [jira] [Created] (LANG-767) Keep 'cause method names' in Lang 4.0 for ServletException
Date Fri, 11 Nov 2011 10:52:52 GMT
Keep 'cause method names' in Lang 4.0 for ServletException

                 Key: LANG-767
             Project: Commons Lang
          Issue Type: Task
    Affects Versions: 4.0
            Reporter: Jens Bannmann says:
bq. The lone deprecation in 3.0 is that of the notion of 'cause method names' in ExceptionUtils.
In Java 5.0 it is still just about needed to handle some JDK classes that have not been migrated
to the getCause API. In Java 6.0 things appear to be resolved and we will remove the related
methods in Lang 4.0. 

I see a problem with this plan: so far, javax.servlet.ServletException has not been retrofitted
to make use of the getCause() API for chaining. The Tomcat project rejected a [bug requesting|]
this in 2005, stating that it had to be changed in the spec. This is what a [bug at sun requests|],
but that is still open as of today.

Thus, if you remove all support for cause method names from ExceptionUtils in Lang 4.0, web
application authors would be forced to either write support glue for ServletException themselves
again, or keep a dependency for Lang 3.0 alongside. Both alternatives sound bad to me.

How about removing most of the cause method names, but keeping those that are still required
for dealing with widely used classes such as ServletException?

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