I'm trying to use Jena to write RDF/XML. The graph I'm writing contains a triple with an IRI node used in predicate position: "urn:uuid:29ec95c1-034b-4d8a-ba48-c50f0f9dd269".
Jena throws an exception when trying to write this graph to RDF/XML. Upon debugging, the cause is that ModelCom.listNameSpaces is trying to parse out the namespace of all the predicates in the graph using org.apache.jena.util.SplitIRI.splitXML method. This method is splitting the URI at index 11, yielding an invalid URI `urn:uuid:29` which later fails validation and throws an exception. This is because the UUID starts with numeric characters which are not valid initial characters for a NCName. I feel like I'm missing something. Is there some aspect of the specification that normally prohibits using UUID URNs in predicate position? Or am I doing something else wrong? Or is this an actual edge case bug that I should file a bug report for? Any insight would be much appreciated. Thank you! - Luke
