Alan Kennedy: """ > Oh no. That only means that namespace declaration attributes are not > created in the DOM data structure. However, output has to fix up > namespaces in .namespaceURI properties as well as directly asserted > "xmlns" attributes. It would be silly for DOM to produce malformed > XML+XMLNS, and of course it is not meant to. The minidom behavior > needs fixing, badly.
My interpretation of namespace nodes is that the application is responsible for creating whatever namespace declaration attribute nodes are required, on the DOM tree. DOM should not have to imply any attributes on output. """ I'm sorry but you're wrong on this. First of all, DOM L2 (the level minidom targets) does not have the concept of "namespace nodes". That's XPath. DOM supports two ways of expressing namespace information. The first way is through the node properties .namespaceURI, .prefix (for the QName) and .localName. It *also* supports literal namespace declaration atrributes (the NSDecl attributes themselves must have a namespace of "http://www.w3.org/2000/xmlns/";). As if this is not confusing enough the Level 1 propoerty .nodeName must provide the QName, redundantly. As a result, you have to perform fix-up to merge properties with explicit NSDEcl attributes in order to serialize. If it does not do so, it is losing all the information in namespace properties, and the resulting output is not the same document that is represented in the DOM. Believe me, I've spent many weary hours with all these issues, and implemented code to deal with the mess multiple times, and I know it all too painfully well. I wrote Amara largely because I got irrecoverably sick of DOM's idiosyncracies. Andrew, for this reason I probably take the initiative to work up a patch for the issue. I'll do what I can to get to it tomorrow. If you help me with code review and maybe writing some tests, that would be a huge help. -- Uche Ogbuji Fourthought, Inc. http://uche.ogbuji.net http://fourthought.com http://copia.ogbuji.net http://4Suite.org Articles: http://uche.ogbuji.net/tech/publications/ -- http://mail.python.org/mailman/listinfo/python-list
