Error when using Templates with XSLTC

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Error when using Templates with XSLTC

Error when using Templates with XSLTC

2003-09-24 - By RKoenig@(protected)

Hi,

I am getting the following error being logged to System.err when trying to
transform an XML Document using XSLTC
("org.apache.xalan.xsltc.trax.TransformerFactoryImpl").

mmiVerifyTpAndGetWorkSize: stack_height=2 should be zero; exit
mmiVerifyTpAndGetWorkSize: stack_height=2 should be zero; exit
mmiVerifyTpAndGetWorkSize: stack_height=2 should be zero; exit
...

The error message is getting output repeatedly (50 - 100 times). It
appears that the transformation does occurr correctly. The problem is
occurring when the Template is being used repeatedly (at least 20 times).
The following code snippet produces the problem.

//Code snippet to execute timing tests using XSLTC.
long count = 30;
Source xslSource = new StreamSource(new CharArrayReader(xslDocument));
TransformerFactory factory = TransformerFactory.newInstance();
Templates template = factory.newTemplates(xslSource);
Transformer transformer = null;
ByteArrayOutputStream transformedOutput = null;
Document document = XMLCompareUtility.parse(xmlFile);
for (int i=0; i < count; i++)
{
transformedOutput = new ByteArrayOutputStream(65536);
transformer = template.newTransformer();
transformer.transform(new DOMSource(document), new StreamResult
(transformedOutput));
}

I am using version 2.5.1 of Xalan J. The input document is about 140KB.
When I reduce the input document size, the number of errors reduces, but
doesn't go away entirely. The problem doesn't occur if I use the
following code to assign the transformer object being used:

transformer = factor.newTransformer();

I am wanting to use Template so that I can share the compiled XSL
stylesheet between multiple threads in my application.

The same XML document and XSL stylesheet (with the code snippet above)
work fine using Template when using the interpreted version of Xalan
("org.apache.xalan.processor.TransformerFactoryImpl").

I would appreciate any feedback that can be offered.

Chris

 Hi,
 
 I am getting the following error being
logged to System.err when trying to transform an XML Document using XSLTC (
"org.apache.xalan.xsltc.trax.TransformerFactoryImpl").  
 
 mmiVerifyTpAndGetWorkSize: stack_height=2
should be zero; exit
 mmiVerifyTpAndGetWorkSize: stack_height=2
should be zero; exit
 mmiVerifyTpAndGetWorkSize: stack_height=2
should be zero; exit
 ...
 
 The error message is getting output
repeatedly (50 - 100 times).  It appears that the transformation does
occurr correctly.  The problem is occurring when the Template is being
used repeatedly (at least 20 times).  The following code snippet produces
the problem.
 
         //Code snippet
to execute timing tests using XSLTC.
         long count = 30
;
         Source
xslSource = new StreamSource(new CharArrayReader(xslDocument));
        
TransformerFactory factory = TransformerFactory.newInstance();
         Templates
template = factory.newTemplates(xslSource);
         Transformer
transformer = null;
        
ByteArrayOutputStream transformedOutput = null;
         Document
document = XMLCompareUtility.parse(xmlFile);
         for (int i=0; i
< count; i++)
         {
            
    transformedOutput = new ByteArrayOutputStream(65536);
            
    transformer = template.newTransformer();
            
    transformer.transform(new DOMSource(document), new StreamResult
(transformedOutput));
         }
 
 I am using version 2.5.1 of Xalan J. &nbsp
;The input document is about 140KB.  When I reduce the input document size,
the number of errors reduces, but doesn't go away entirely.  The problem
doesn't occur if I use the following code to assign the transformer object
being used:
 
 
         transformer =
factor.newTransformer();
 
 I am wanting to use Template so that I can
share the compiled XSL stylesheet between multiple threads in my application.
 
 The same XML document and XSL stylesheet
(with the code snippet above) work fine using Template when using the
interpreted version of Xalan ("org.apache.xalan.processor
.TransformerFactoryImpl").
 
 I would appreciate any feedback that can be
offered.
 
 Chris

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