We used probatron and saxon to validate a test xml using a given sch file in our java application. Recently, a new rule has been added to the sch file such as
<let name="foo" value="base-uri()">
and some rules use that value, but $foo contains empty string and the rules fail. Where do I have to set this value? I added xml:base tags to the test xml as stated in https://www.w3.org/TR/xmlbase/ but it did not worked. Do I have to set sth in the java side?
EDIT (solution found) We used probatron4j for java based schematron handling:
Java source part:
javax.xml.transform.TransformerFactory t = org.probatron.Utils.getTransformerFactory();
// create xml readers, perfor template processing, apply xslt
// as stated in the probatron4j examples
// ...
t.transform(getCandidateSource(), new StreamResult(baos));
our fix includes:
Source source = new StreamSource(new FileInputStream(..
// or
Source source = new StreamSource(canditateURL.openStream()..
// depending on whether input source is file or url based
// below is the fix, we set path of file or exteral form of the url
source.setSystemId(pathOrUrl);
Final result: The value we set as systemid is set into the return value of the base-uri() function val in the schema.