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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=5528 DOMBuilder mixes DOM Level 1 and 2 Summary: DOMBuilder mixes DOM Level 1 and 2 Product: XalanJ2 Version: CurrentCVS Platform: All OS/Version: All Status: NEW Severity: Critical Priority: Other Component: org.apache.xml.utils AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] There are several namespace problems in the DOMBuilder which all result in DOMs which can have mixed Level 1 and Level 2 objects! 1. If I use the JAXP Interface with a DOMResult object which gets a Document/Node object in the constructor, the underlying DOMBuilder does not test whether this Document/Node supports namespaces or not! This results in DOM trees having DOM Level 1 mixed with DOM Level 2 nodes! 2. The startElement() method tests itself which DOM Level is used by looking at the namespace parameter. This test is not correct. The SAX spec states, that if an element has no namespace (but namespaces are used) the namespace parameter is the empty string. The startElement() method assumes in this case that DOM Level 1 is used instead! >>> CODE SNIPPET FROM DOMBUILDER <<<< public void startElement( String ns, String localName, String name, Attributes atts) throws org.xml.sax.SAXException { Element elem; if ((null == ns) || (ns.length() == 0)) elem = m_doc.createElement(name); else elem = m_doc.createElementNS(ns, name); .... >>> END CODE SNIPPET FROM DOMBUILDER <<<< 3. The handling of the attributes of the element in the startElement() does not reflect the namespace handling for the element. Here again for each attribute the namespace uri is tested against the empty string. If it is the empty string, DOM Level 1 methods are used otherwise DOM Level 2. Again, this results in mixed objects! Attached is a patch which fixes all these problems. The incoming document is checked once if it is DOM Level 1 or 2 and from that one the same set of methods is used
