[DAIS-WG] DataResourceAddressType problem when using JAXB

[Steven Lynden]

The two people working on implementations of the WS-DAI-RDF Querying
specification have both run into a problem with the return message
associated with factory operations. Factory operations return a
DataResourceAddressType, which is defined in the WS-DAI core as:

<xsd:complexType name="DataResourceAddressType">
  <xsd:complexContent>
    <xsd:extension base="wsa:EndpointReferenceType"/>
  </xsd:complexContent>
</xsd:complexType>

Both developers (one at AIST and one at UPM) have chosen to use JAXB
to generate Java classes and have run into a problem due to the fact
that JAXB maps wsa:EndpointReferenceType to a final class that can't
be extended, resulting in a error when attempting to compile the
generated classes. Both implementations are currently using
was:EndpointReferenceType directly instead of DataResourceAddressType
until this issue is resolved.

Does anybody know the reason behind extending
wsa:EndpointReferenceType in the WSDL rather than just using it as the
factory operation return type? Has anybody run into this problem
before with JAXB?

Regards,

Steven.