Bug #4858
Namespace not serialized (wrapped DOM Node)
0%
Description
Reported today by email:
we just switched from saxon 9.9.1-7 to 10.3. We found an unexpected difference in a serialization of an element in the HTML default namespace ("http://www.w3.org/1999/xhtml"):
Consider the following fragment
1 <xsl:variable name="body" select="imf:parse-wiki(.,$value-format)" as="element(xhtml:body)"/>
2 <xsl:message select="namespace-uri($body)"/>
3 <xsl:sequence select="$body"/>
The function imf:parse-wiki() in (1) is a wrapper around an extension function, that produces a body element in the default xhtml namespace (i.e. no prefix). This is confirmed by the as-clause (no warnings/errors) as well as the statement (2) that shows http://www.w3.org/1999/xhtml in the console. However, the xsl:sequence statement in (3) produces the element without a default namespace ("
"), like:<body xmlns:html="http://www.w3.org/1999/xhtml">
<p>Dit type is in IMKAD gemodelleerd,......</p>
</body>
The extension function uses the DocumentWrapper() class, as per the following code:
a Node node = ((DOMSource)source).getNode();
b String baseURI = source.getSystemId();
c return = new DocumentWrapper(node.getOwnerDocument(), baseURI, configuration);
Hope this info is sufficient to pinpoint a possible flaw in 10.3 code. This issue did not exist in Saxon 9.9.1-7.
Thanks in advance!
History
#1
Updated by Michael Kay about 1 month ago
I've constructed this test, which shows no problems, so I'm going to need a more precise repro:
public static NodeInfo makeBodyElement(XPathContext context) throws Exception {
String in = "<?xml version='1.0'?> \n" +
"<body xmlns=\"http://www.w3.org/1999/xhtml\">\n"
+ " <p>Dit type is in IMKAD gemodelleerd,......</p>\n"
+ "</body>";
// Read an XML file to a DOM
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
DocumentBuilder db = factory.newDocumentBuilder();
InputSource is = new InputSource(new StringReader(in));
Document doc = db.parse(is);
DocumentWrapper wrapper = new DocumentWrapper(doc, "http://dummy/", context.getConfiguration());
return wrapper.wrap(doc.getDocumentElement());
}
/**
* Test that namespaces are copied OK by an identity transform
*/
@Test
public void testNamespaceSerialization() {
// bug 4858
try {
// Stylesheet
String xslt =
"<xsl:stylesheet version='2.0' xmlns:xsl='http://www.w3.org/1999/XSL/Transform'"
+ " xmlns:my='java:jaxptest.DOMTest' xmlns:xhtml='http://www.w3.org/1999/xhtml'>\n" +
" <xsl:template match='/'>\n" +
" <xsl:variable name='body' as='element(xhtml:body)' select='my:makeBodyElement()'/>\n" +
" <xsl:sequence select='$body'/>\n" +
" </xsl:template>\n" +
"</xsl:stylesheet>";
// Run a transformation that invokes an extension function returning this DOM
TransformerFactory tFactory = new TransformerFactoryImpl();
Templates templates = tFactory.newTemplates(new StreamSource(new StringReader(xslt)));
Transformer transformer = templates.newTransformer();
StringWriter sw = new StringWriter();
transformer.transform(new StreamSource(new StringReader("<a/>")), new StreamResult(sw));
System.err.println(sw.toString());
} catch (Exception e) {
e.printStackTrace();
fail(e.getMessage());
}
}
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