Bugs item #1193537, was opened at 2005-05-02 09:24
Message generated for change (Comment added) made by tony_robertson
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: duplicate namespaces output in XMLWriter
Initial Comment:
When using SAXWriter to output a SAX stream from TRaX,
SAXWriter outputs duplicate namespaces. This appears to
be because the namespaces appear in the SAX stream both
as prefix mappings and as attributes.
(I think the dual-representation of namespaces also
ocurrs when the SAX namespace-prefix feature is enabled
in the SAX parser.)
The test case below highlights the problem, and the
XMLWriter.patch is one possible fix.
[Tested on JDK1.4.2_06.]
import junit.framework.TestCase;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;
import org.xml.sax.InputSource;
import javax.xml.transform.*;
import javax.xml.transform.sax.*;
import javax.xml.transform.stream.*;
import java.io.*;
/**
* Tries to exercise a bug where namespace declarations
are output twice,
* when using JAXP SAX transform with Dom4j XMLWriter.
*/
public class TestJAPXDom4jSerialize extends TestCase
{
String xml = "<test:test xmlns:test='testns'
xmlns='abc'/>";
String xslt = "<?xml version=\1.0\
encoding=\iso-8859-1\?>\n" +
"<xsl:stylesheet
xmlns:xsl=\http://www.w3.org/1999/XSL/Transform\
version=\1.0\>\n" +
"<xsl:template match=\/\>\n" +
" <xsl:copy-of select=\.\/>\n" +
"</xsl:template>\n" +
"</xsl:stylesheet>";
public void testXSLTNamespace() throws
TransformerException
{
SAXTransformerFactory factory =
(SAXTransformerFactory)
SAXTransformerFactory.newInstance();
TransformerHandler handler =
factory.newTransformerHandler(new StreamSource(new
StringReader(xslt)));
Transformer tx = handler.getTransformer();
StringWriter sw = new StringWriter();
OutputFormat of =
OutputFormat.createCompactFormat();
of.setSuppressDeclaration(true);
XMLWriter writer = new XMLWriter(sw, of);
tx.transform(new SAXSource(new InputSource(new
StringReader(xml))), new SAXResult(writer));
assertEquals("<test:test xmlns:test=\testns\
xmlns=\abc\></test:test>", sw.toString());
}
}
----------------------------------------------------------------------
Comment By: Tony Robertson (tony_robertson)
Date: 2005-08-22 11:21
Message:
Logged In: YES
user_id=1332772
I have also found this bug causes trouble in jakarta-
commons "Jelly", which uses the DOM4J XMLWriter.
There is a reference to "Fixed bug in XMLWriterwhere
namespace declarations were duplicated" by "maartenc" in
the change notes for "Release 1.5-beta-1 - 2004-03-25", but
that fix seems to address the writeAttributes(Element)
method which is used by the public void writeOpen(Element
element) method. It doesn't address the bug described here.
The patch attached to this bug report looks like it will fix the
problem, so I vote that it gets included.
Regards.
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