ExceptionSelector: Exception Not Unrolling

["Kist, Paul" <pa...@merck.com>]

Hello everyone,

I am using the ExceptionSelector to do some custom error handling based on
the different Exceptions being thrown.  It looks like the only Exceptions I
am able to do anything with are the java.lang.RuntimeException and the
org.apache.cocoon.ProcessingException.   I set up a situation where a
SourceException is being thrown and here's the error message that gets sent:

Internal Server Error
Message: Failed to execute pipeline.

Description: org.apache.cocoon.ProcessingException: Failed to execute
pipeline.: java.lang.RuntimeException:
org.apache.cocoon.ProcessingException: Exception during source resolving.:
org.apache.excalibur.source.SourceException: Resource not found. There is no
resource with the requested path:
'global/www.msdclinicaltrials.com/facts/poll_default.xml' and promotion
status: uat

Sender: org.apache.cocoon.servlet.CocoonServlet

Source: Cocoon Servlet

Request URI

facts/index.html


Now, It looks like the heirarchy is as follows:  ProcessingException -->
RuntimeException --> ProcessingException --> SourceException


Here's my ExceptionSelector defn:


            <map:selector logger="sitemap.selector.exception"
name="exception" src="org.apache.cocoon.selection.ExceptionSelector">
                <exception
class="org.apache.cocoon.ResourceNotFoundException" name="not-found"/>
                <exception class="java.lang.RuntimeException"
name="run-time" unroll="true"/>                
                <exception class="org.apache.cocoon.ProcessingException"
name="internal-error" unroll="true"/>
                <exception
class="org.apache.excalibur.source.SourceException" name="source"/>

                <exception class="java.sql.SQLException" name="sql"/>
                <exception class="java.lang.Throwable" unroll="true"/>
            </map:selector>

And here's how I'm handling the errors:

				<map:handle-errors>
					<map:select type="exception">
						<map:when
test="internal-error">
							<map:generate
type="notifying"/>
          						<map:serialize
type="xml"/>							
						</map:when>

						<map:when test="run-time">
							<map:generate
type="notifying"/>
          						<map:serialize
type="xml"/>							
						</map:when>

						<map:when test="not-found">

							<map:generate
type="notifying"/>
							<map:serialize
type="xml"/>	
					</map:when>

						<map:when test="source"
							<map:generate
type="notifying"/       						
							<map:serialize
type="xml"/>								
						</map:when>

					</map:select>
				</map:handle-errors>

With this configuration, I get XML back from the NotifyGenerator, but it's
for the ProcessingException.  For some reason it is not unrolling to reveal
the SourceException pipeline.

If I get rid of the test for run-time or internal-error, it goes right to
the default error page, that shows the stack trace.

I haven't seen much on this on the web and newsgroups.  Am I missing
something?

-Paul


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Re: ExceptionSelector: Exception Not Unrolling

[Joerg Heinicke <jo...@gmx.de>]

On 30.11.2004 20:51, Kist, Paul wrote:

> Hello everyone,
> 
> I am using the ExceptionSelector to do some custom error handling based on
> the different Exceptions being thrown.  It looks like the only Exceptions I
> am able to do anything with are the java.lang.RuntimeException and the
> org.apache.cocoon.ProcessingException.   I set up a situation where a
> SourceException is being thrown and here's the error message that gets sent:
> 
> Internal Server Error
> Message: Failed to execute pipeline.
> 
> Description: org.apache.cocoon.ProcessingException: Failed to execute
> pipeline.: java.lang.RuntimeException:
> org.apache.cocoon.ProcessingException: Exception during source resolving.:
> org.apache.excalibur.source.SourceException: Resource not found. There is no
> resource with the requested path:
> 'global/www.msdclinicaltrials.com/facts/poll_default.xml' and promotion
> status: uat

...

> With this configuration, I get XML back from the NotifyGenerator, but it's
> for the ProcessingException.  For some reason it is not unrolling to reveal
> the SourceException pipeline.
> 
> If I get rid of the test for run-time or internal-error, it goes right to
> the default error page, that shows the stack trace.
> 
> I haven't seen much on this on the web and newsgroups.  Am I missing
> something?

I fear there is something broken. Not that I had a deeper look into it, 
but I have the same problem. And same like you I had the feeling to have 
it configured correctly, but I always get the ProcessingException and 
not my own BusinessException as root, so that I can' i18n-ize my backend 
error messages.

Does anybody has it working?

Joerg

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