[XML-SIG] [Simon.Dean@Sun.COM: Replacing Element Nodes]

[Simon Dean]

I have solved the problems I was having.

I learnt:

1. parent below, should really have been named child for clarity/logic sake :)
2. parent.parentNode is actually the root node!
3. importNode returns an object which is a different instance, not a copy. (thankyou 'print') 
4. Also, no need to clone and then import a node, just do an importNode.

regards,
Simon.


> Hi,
> 
> I'm trying to replace Element Node's in a DOM called 'dom' with Element Node's from 
> several DOM's assigned 'domFromRef'. 'domFromRef' get's generated dynamically from list
> contents in 'refs'.
> 
> print replacementElementNode 
> PrettyPrint(replacementElementNode)
> 
> prints the Element Nodes which I want to replace in 'dom' e.g. 
> 
> <Element Node at 853a04c: Name='LC_COLLATION' with 0 attributes and 5 childern>
> 
> <LC_COLLATION>
>   <Collator>
>   <CollationOptions>
>     <...etc>
>   <CollationOptions>
> </LC_COLLATION>
> 
> 
> What should I call now in 'def replaceNode' to do the replacement, Element Nodes in the domFromRef with the
> Element Nodes from dom, replaceChild() ?  If so, I can't seem to get it to work.
> 
> My program is below, any help much appreciated.
> 
> cheers,
> Simon.
> 
> 
> from    xml.dom.ext.reader      import  PyExpat
> from    xml.dom.ext             import  PrettyPrint
> from    xml.xpath               import  Evaluate
> import  sys
> 
> sys.getdefaultencoding()
> reader = PyExpat.Reader()
> dom = reader.fromStream(sys.stdin)
> 
> def reconstructDom(dom):
> 
>         refs = Evaluate('/Locale//*[@ref]', dom.documentElement)
>         for i in range(len(refs)):
>                 elementName = refs[i].nodeName
> 
>                 for parent in dom.getElementsByTagName(elementName):
>                         if parent.nodeName == 'LC_FORMAT':
>                                 attFileValue = parent.getAttribute('ref')
>                                 attCurrValue = parent.getAttribute('replaceTo')
>                                 getFormatElementBlockFromFile(elementName, attFileValue, attCurrValue)
>                         else: 
>                                 attFileValue = parent.getAttribute('ref')
> 				domFromRef = reader.fromUri('/home/sd/data_3/' +attFileValue +'.xml')
>                                 clone, elementName, domFromRef = getParentElementBlockFromFile(elementName, attFileValue, domFromRef
> ) 
>                                 newDom = replaceNode(clone, elementName, domFromRef)
> 
> 
> 
> def getParentElementBlockFromFile(elementName, attFileValue, domFromRef):
> 
>         for parent in domFromRef.getElementsByTagName(elementName):
>                 clone = parent.cloneNode(1)
>                 return clone, elementName, domFromRef 
> 
> 
> def getFormatElementBlockFromFile(elementName, attFileValue, attCurrValue):
>         pass
> 
> 
> def replaceNode(clone, elementName, domFromRef):
> 
>         # replace Element Node from domFromRef with Element Node from dom and return dom to higher object 
>         replacementElementNode = dom.importNode(clone, 1)
>         
> 	print replacementElementNode 
>         PrettyPrint(replacementElementNode)
> 
>         #return newDom 
> 
> 
> # main()
> reconstructDom(dom)
> 
>  
> 
> -- 
> http://mail.python.org/mailman/listinfo/python-list
> 
> ----- End forwarded message -----
> 
> -- 
> -------------------------------------------------------------------
> simon.dean at Sun.com
> Globalization Engineering
> http://www.sun.com
> These opinions are my own unless otherwise stated.
> -------------------------------------------------------------------
> 
> 
> 
>  
> 
> _______________________________________________
> XML-SIG maillist  -  XML-SIG at python.org
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-- 
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simon.dean at Sun.com
Globalization Engineering
http://www.sun.com
These opinions are my own unless otherwise stated.
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