A SAX parser (XMLReader) doesn't notify comments to the ContentHandler, it
notifies them to the LexicalHandler. So you need to nominate the
TransformerHandler to the XMLReader in both roles: both as ContentHandler
and as LexicalHandler.
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: Andrew Welch [mailto:andrew(_dot_)j(_dot_)welch(_at_)gmail(_dot_)com]
Sent: 13 February 2008 10:54
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Using a TransformerHandler strips comments but
a Transformer keeps them
Does anyone know why a transform using a TransformerHandler
strips comments but the "stardard" Tranformer keeps them.
For example:
sourceXML:
<?xml version="1.0" encoding="UTF-8"?>
<!-- test outer comment -->
<foo> <!-- inner comment --> foo</foo>
The stylesheet is the identity transform.
The first transformation technique is using a TransformerHandler:
SAXTransformerFactory stf =
(SAXTransformerFactory)TransformerFactory.newInstance();;
TransformerHandler handler = stf.newTransformerHandler(new
StreamSource(stylesheet)); handler.setResult(new
StreamResult(System.out)); XMLReader xmlReader =
XMLReaderFactory.createXMLReader();
xmlReader.setContentHandler(handler);
xmlReader.parse(sourceXML.toURI().toString());
The second is using a Transformer:
stf.newTransformer(new StreamSource(stylesheet)).
transform(new StreamSource(sourceXML), new
StreamResult(System.out));
Produces this output:
TransformerHandler:
<?xml version="1.0" encoding="UTF-8"?><foo> foo</foo>
Transformer:
<?xml version="1.0" encoding="UTF-8"?><!-- test outer comment --><foo>
<!-- inner comment --> foo</foo>
I would expect the two to produce identical results. Has
anyone come across this before?
thanks
andrew
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