DO NOT REPLY [Bug 35644] New: - NullPointerException from SQLTransformer

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http://issues.apache.org/bugzilla/show_bug.cgi?id=35644

           Summary: NullPointerException from SQLTransformer
           Product: Cocoon 2
           Version: 2.1.7
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: normal
          Priority: P2
         Component: blocks
        AssignedTo: dev@cocoon.apache.org
        ReportedBy: ats37@hotmail.com


I have a pipeline which consists of a file generator, the SQL transformer, and
an XML serializer.  Unfortunately, I forgot to add the database driver to the
load-classes init param, so the DriverManager was unable to find anything to
handle my serverURL and hence the SQL transformer was unable to get a connection.
I expected to get an error, however, I didn't expect it to be a
NullPointerException (stack trace below).  Looks like the transformer needs to
be more careful about what it passes into Xalan?  At least in the Xalan 2.6.0
sources, ensurePrefixIsDeclared method has a check for null namespaces, but not
for a null rawName...?


java.lang.NullPointerException
	at org.apache.xml.serializer.ToStream.ensurePrefixIsDeclared(ToStream.java:2634)
	at org.apache.xml.serializer.ToStream.startElement(ToStream.java:1736)
	at
org.apache.xalan.transformer.TransformerIdentityImpl.startElement(TransformerIdentityImpl.java:1020)
	at org.apache.cocoon.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.java:94)
	at org.apache.cocoon.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.java:94)
	at
org.apache.cocoon.transformation.AbstractSAXTransformer.startTransformingElement(AbstractSAXTransformer.java:658)
	at org.apache.cocoon.transformation.SQLTransformer.start(SQLTransformer.java:765)
	at
org.apache.cocoon.transformation.SQLTransformer.executeQuery(SQLTransformer.java:323)
	at
org.apache.cocoon.transformation.SQLTransformer.endExecuteQueryElement(SQLTransformer.java:476)
	at
org.apache.cocoon.transformation.SQLTransformer.endTransformingElement(SQLTransformer.java:738)
	at
org.apache.cocoon.transformation.AbstractSAXTransformer.endElement(AbstractSAXTransformer.java:336)
	at org.apache.cocoon.components.sax.XMLTeePipe.endElement(XMLTeePipe.java:89)
	at
org.apache.cocoon.components.sax.XMLByteStreamInterpreter.parse(XMLByteStreamInterpreter.java:100)
	at
org.apache.cocoon.components.sax.XMLByteStreamInterpreter.deserialize(XMLByteStreamInterpreter.java:73)
	at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:267)
	at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:483)
	at
org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(SerializeNode.java:120)
	at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)
	at
org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java(Compiled
Code))
	at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java(Compiled
Code))
	at
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:138)
	at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java(Compiled
Code))
	at
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92)
	at
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234)
	at
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:176)
	at
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:243)
	at
org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:117)
	at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)
	at
org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNod

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