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From "Eric Simmerman" <eric.simmer...@Tallan.com>
Subject Trouble connecting StreamGenerator to HSSFSerializer
Date Tue, 14 Jan 2003 01:04:23 GMT
I'm having trouble combining two Cocoon samples into the same mapping.
I setup this simple mapping using the Stream and POI examples in Cocoon
2.0.4:

                   <map:match pattern="convert">
                     <map:generate type="stream"/>
                     <map:serialize type="xls"/>
                   </map:match>

When I fill the Stream example's form (OrderPage.xml modified to
action=convert), with the content from the POI's sample
(hypothetical-sales.xml) and POST it, I get:


type fatal
message Exception in StreamGenerator.generate()
description org.apache.cocoon.ProcessingException: Exception in
StreamGenerator.generate(): java.lang.NullPointerException
sender org.apache.cocoon.servlet.CocoonServlet
source Cocoon servlet
stack-trace
org.apache.cocoon.ProcessingException: Exception in
StreamGenerator.generate(): java.lang.NullPointerException
	at
org.apache.cocoon.generation.StreamGenerator.generate(StreamGenerator.java:1
64)
	at
org.apache.cocoon.components.pipeline.CachingEventPipeline.process(CachingEv
entPipeline.java:250)
	at
org.apache.cocoon.components.pipeline.CachingStreamPipeline.process(CachingS
treamPipeline.java:395)


I was of course hoping that the POSTed XML from hypothetical-sales.xml would
be serialized into XLS and fed back to me as the response. Can anyone
explain why I receive the NullPointer, and/or help me achieve my desired
result?

Thanks,
-Eric Simmerman


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