[xml] Default Values for Attributes

[David Grohmann <grohmann arlut utexas edu>]

Using the Tree API is there a way to get at the default value listed in 
the XML Schema for an optional attribute that was not included in the 
xml document?
Reading through the libxml2 website it seems this can be done with the 
xmlreader API (and even then maybe only for DTDs, it is unclear)

example: schema
<xs:element name = "root_element">
   <xs:attribute  name = "prop1" use="optional" default="5">
</xs:element>
=====================
Xml document
<root_element>

xmlNode* node = magic_code_to_get_that_root_node();

xmlChar *myAttribute = xmlGetProp(node, "prop1") <= this wont work, is 
it possible some other way?

Thank you,

--
David Grohmann
Senior Student Associate
ARL:ESL - S206