Java XML DSig and XPath

Question

I\'m signing part of an XML document using the Java XML DSig api. I\'m trying to understand how it is arriving at the Digest value.

My document is:

Answer 1

Following an example at: http://markmail.org/message/tdgioazns7l4yg6d#query:java%20xpath%20xml%20dsig%20bug+page:1+mid:tgw5kr7uscwkcran+state:results, I found that I needed to change the XPathType.Filter.UNION to XPathType.FILTER.INTERSECT. That seems to have solved my problem. The XML DSig library is now using the correct value that I expected.