On 06/17/2011 05:41 AM, Florian Pflug wrote:
On Jun17, 2011, at 11:09 , Radosław Smogura wrote:
1.
SELECT (XPATH('/root/*', '<root xmlns:o="http://olacle.com/db";
xmlns:p="http://postgresql.org/db";><o:db><a><b></b></a></o:db><p:db></p:db></root>'));
Produces:
"{"<o:db>
<a>
<b/>
</a>
</o:db>",<p:db/>}"
In above<b></b> was reduced to<b/> this is different infoset then input, and
those notations are differently interpreted e.g. by XML Binding& WebServices. The 1st one will
may be mapped to empty string, and 2nd one to to null.
Oh, joy :-(
I thought these were basically supposed to be the same.
The XML Information Set for example specifically excludes:
The difference between the two forms of an empty element: |<foo/> |
and |<foo></foo>|.||||
|
See <http://www.w3.org/TR/2004/REC-xml-infoset-20040204/> Appendix D.
Note that this implies that <foo></foo> does not have content of an
empty string, but that it has no content.
|
cheers
andrew
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