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From "Berin Loritsch" <blorit...@apache.org>
Subject RE: Simplifying Error Reporting (FW: doc generation woes)
Date Wed, 17 Jul 2002 15:13:53 GMT
Sorry I sent this to the wrong list...

> -----Original Message-----
> From: Berin Loritsch [mailto:bloritsch@apache.org] 
> Sent: Wednesday, July 17, 2002 11:05 AM
> To: Avalon Developer's List
> Subject: Simplifying Error Reporting (FW: doc generation woes)
> 
> 
> Enclosed below is a message we received from Stephen McConnel 
> regarding the Avalon doc generation.  The problem isn't so 
> much that Cocoon couldn't get working but that he had to sift 
> through mountains of stacktraces.
> 
> To that end, I suggest we look at a smarter way of dealing 
> with errors. There are certain types of errors that are 
> common enough to really be simplified.  Also, there are a 
> number of exceptions in the log files that seem to have no 
> real affect on Cocoon's ability to output the proper result.
> 
> My suggestion is this:
> 
> 1. Identify common potential errors, following is a short list:
>    * Bad markup (XML document malformed)
>    * Resource not available
> 
> 2. Provide a really simple message WITHOUT a stacktrace for 
> these types
>    of errors.  It is more helpful to know that "index.xml" is not well
>    formed than it is to know exactly which line of code the 
> error occurred.
>    Same with the fact that "index.xml" might not exist.
> 
> 3. Stop using exceptions to control program flow.  We need 
> another mechanism
>    for that.
> 
> Stack traces in the log files and printed to the screen 
> should document real exceptions.  They should represent 
> things that Cocoon *really* did not expect, or cannot handle 
> gracefully.


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