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From: bugzilla@apache.org
To: tomcat-dev@jakarta.apache.org
Subject: DO NOT REPLY [Bug 36231]  -
    getCause() null for ServletException
Message-Id: <20050817193040.B7066E0@ajax.apache.org>
Date: Wed, 17 Aug 2005 21:30:40 +0200 (CEST)

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http://issues.apache.org/bugzilla/show_bug.cgi?id=36231


Larry.Isaacs@sas.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Catalina                    |Servlet & JSP API


------- Additional Comments From Larry.Isaacs@sas.com  2005-08-17 21:30 -------
Tomcat 5.5.9 requires 1.4 or later, but the servlet-api.jar it uses is expected 
to be able to run with 1.3, per the spec.  Thus, isn't not feasible to fix 
servlet-api.jar itself.  Tomcat could call initCause() as you suggest, but if 
someone wrote a webapp that depended on getCause() not returning null, the 
webapp would likely not be portable.  This is a case where "unnecessarily 
harder" is preferred to help ensure the portability of webapps.

Since I would guess that you likely don't care about portability, you could 
customize your Tomcat to fix this.  Simpler may be just to write a utility 
class with a static method that accepts a ServletException and returns the 
cause from getRootCause() or getCause(), which ever is not null.

Updating the component, since this is where the primary issue lies.

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