Transformer.setParameter should accept Source as an Object value
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         Key: XALANJ-2057
         URL: http://issues.apache.org/jira/browse/XALANJ-2057
     Project: XalanJ2
        Type: Improvement
  Components: JAXP  
    Versions: 2.7.0-future-release    
    Reporter: elharo


Saxon 8 has a nice feature whereby you can pass a TrAX SAXSource/DOMSource etc. 
to the Transformer.setParameter method, Saxon converts that source into its 
internal representation. That is, it will read from the source and build the 
necessary representation of a node-set. This makes it relatively easy to set 
parameters whose values are node-sets.

This is very useful for hooking up Xalan to other object models such as JDOM 
and XOM. Currently these models can be transformed by wrapping the original 
input document in a SAXSource. However, node-set parameters do not work the 
same way. These have to be set by wrapping them in a DOM NodeIterator or 
NodeList or Node. It would be more consistent and more convenient if 
setParameter accepted a TrAX Source object as well. 

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