Oracle TopLink Object-to-XML - issue JAXBException: Provider not found...

Question

Env:
OS:XP
Java dev env: JDev 10.1.2 production
Toplink Workbench - 10g Developer Preview 3 (10.1.3.0) build 041116
I am attempting to use the toplink object to xml functionality through carefully following the tutorial titled Oracle TopLink Object-to-XML on OTN (link: http://www.oracle.com/technology/products/ias/toplink/preview/10.1.3dp3/howto/ox/index.htm)
The first 11 steps are nice and clear and very easy to follow. However, when I hit 12 I run into problems. I believe I have done all I am required to do.
My demo test code falls over on the attempting to create the JAXB context:
JAXBContext jaxbContext = JAXBContext.newInstance("examples.ox.model");
The exception I get is:
javax.xml.bind.JAXBException: Provider oracle.toplink.ox.jaxb.JAXBContextFactory not found
- with linked exception:
[java.lang.ClassNotFoundException: oracle.toplink.ox.jaxb.JAXBContextFactory ]
The code is capable of loading the jaxb.properties file, and has toplink.jar in the classpath. I am able to create a is located JAXBContextFactory prior to calling the new instance logic, illustrating that the class is in the classpath.
Using google I have seen it mentioned that the newInstance call could be making use of a different JVM to the Application (https://jaxb.dev.java.net/faq/#classloader) hence may not be able to pick up the JAXBContextFactory class. I have attempted to follow their advice of passing in a class loader - but this makes no difference.
I.E. JAXBContext jaxbContext = JAXBContext.newInstance("examples.ox.model", this.getClass().getClassLoader());
Does anyone recognise this issue and have a solution.
Here is my code:
try
File file = new File("D:\\Toplink\\demo\\Customer-data.xml");
JAXBContext jaxbContext = JAXBContext.newInstance("examples.ox.model);
Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
Customer customer = (Customer) unmarshaller.unmarshal(file);
System.out.println(" customer.getFirstName() : "+customer.getFirstName());
catch(Exception e)
System.out.println("Error: "+ e.toString());
As mentioned earlier it falls over on JAXBContext.newInstance("examples.ox.model);
cheers
Nick

Answer 1

Hi Blaise,
thanks for your response.
My session.xml file is located:
D:\Toplink\demo\classes\session.xml
And contains:
<?xml version = '1.0' encoding = 'UTF-8'?>
<toplink-sessions version="10g Developer Preview 3 (10.1.3.0 )" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<session xsi:type="database-session">
<name>examples.ox.model</name>
<event-listener-classes/>
<primary-project xsi:type="xml">D:/Toplink/demo/classes/CustomerProject.xml</primary-project>
<login xsi:type="xml-login"/>
</session>
</toplink-sessions>
My classpath references only jars downloaded with the links on the How To tutorial titled Oracle TopLink Object-to-XML on OTN (link: http://www.oracle.com/technology/products/ias/toplink/preview/10.1.3dp3/howto/ox/index.htm)
This is the JDev output indicating the classpath and error:
D:\Jdev1013Preview\jdk\bin\javaw.exe -ojvm -classpath D:\Toplink\demo\classes;D:\Toplink\lib\xml.jar;D:\Toplink\lib\xmlparserv2.jar;D:\Toplink\toplink\jlib\tljaxb.jar;D:\Toplink\toplink\jlib\toplink.jar examples.ox.model.RunDemo
Error: javax.xml.bind.JAXBException: Provider oracle.toplink.ox.jaxb.JAXBContextFactory not found
- with linked exception:
[java.lang.ClassNotFoundException: oracle.toplink.ox.jaxb.JAXBContextFactory
Process exited with exit code 0.
Any more suggestions?
In the meantime I will go through the information on the link that you have sent and see if I can get anyfurther.
Thanks
Nick