There is a (hack) way to insert context information in the error messages. I hope the following checksum validation example will remain readable:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE schema [
<!ENTITY length "string-length(.)">
<!ENTITY diagName '<value-of select="name()"/>'>
<!ENTITY diagValue '<value-of select="."/>'>
]>
<sch:schema xmlns="http://www.ascc.net/xml/schematron" xmlns:sch="http://www.ascc.net/xml/schematron" queryBinding="xslt2">
<sch:pattern name="test">
<sch:rule context="/UpdateRequest/Checksum">
<sch:assert test="ends-with((
(substring(.,&length; - 8,1) * 3) +
(substring(.,&length; - 7,1) * 2) +
(substring(.,&length; - 6,1) * 7) +
(substring(.,&length; - 5,1) * 6) +
(substring(.,&length; - 4,1) * 5) +
(substring(.,&length; - 3,1) * 4) +
(substring(.,&length; - 2,1) * 3) +
(substring(.,&length; - 1,1) * 2)
) mod 11, substring(.,&length;,1))">[E|Checksum|INVALID] Invalid value: '&diagValue;' in field '&diagName;'</sch:assert>
</sch:rule>
</sch:pattern>
</sch:schema>


I’m using Schematron extensively in a large OSB / SOA project and can’t understand why Oracle is using a 10 year old Schematron implementation. The ISO version is way more powerful…

The reason why you don’t get additional context information on the error messages is because of schematron. The sch file has to be updated with elements and the xpath function that you need to return the context value. I use oXygen to develop and test my XSD’s and SCH files, which is much easier than JDeveloper.

Extend the sample schematron something like this:

assert test=”Xpath expression”
value-of select=”Xpath expression of values that you want to see”

The post was very useful. Thanks for this. I have  doubt in this.

“The namespaces of our input payload (“http://amis.nl/schematrondemo/company” and “http://amis.nl/schematrondemo/common”) have to be declared. This can not be done in the normal way with a “xmlns” attribute, because the declarations have to ’survive’ the double xsl transformation”

What do u mean by ‘survive double xsl transformation’ here.?