FYI:
Xerces 2.12.0 is out (as of April 21) though it has not made it to Maven
central.
One thing of interest (to me) is whether it has a bugfixed version of
Duration. JENA-1402
I still think we should un-depend on Xerces.
Andy
On 28/04/18 20:38, Andy Seaborne wrote:
JENA-1537
While the JDK does have a Xerces derived parser (it split off long
before 2.11.0 and separately evolved), it is behind Java9 module
"java.xml".
Jena uses Xerces 2.11.0 in two ways - for the datatypes (oaj.datatypes)
and XML parsing (oaj.rdfxml.xmlinput - also known as ARP). Both make
internal use of Xerces.
The datatypes uses Xerces provide XSD datatypes including validation.
RDFXMLParser uses Xerces SAXParser and in a minor way some other stuff
that isn't in java.xml.sax.
I've had a prototype-hack go at removing Xerces from Jena:
https://github.com/afs/jena-xerces
Datatypes:
* One feature omitted: XSDDatatype.loadUserDefined.
These functions parse XSD scheme datatype definitions. The
implementation calls into the internal XML parsing which would not be
legal in Java9 modules if using the JDK built-in parser. It seems to
need a fairly complete XML parser engine.
We should consider dropping this feature.
XML Parsing:
* Looses the check on whether InputStreamReader or FileReader have the
right encoding for the XML document. It hooks into an interface call
that does not seem to be available in a standard SAX parser. (Shouldn't
be using Readers anyway!)
Andy
