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Migrate RCP to Java11 using MOXy [message #1800703]

Sun, 06 January 2019 09:38

Frank Benoit

Messages: 179
Registered: July 2009

Senior Member

Hi

I try to migrate a Eclipse RCP application to run on Java 11 (before Java 8).
But with the xml unmarshalling, i have trouble.

I added some bundles to the target platform:
javax.activation (javax.activation-1.2.0.jar)
jaxb-api (jaxb-api-2.4.0-b180830.0359.jar)

In the dependencies I added:
Import-Package: com.sun.xml.bind;version="2.4.0",
javax.activation;version="1.2.0",
javax.xml.bind;version="[2.2.12,3.0.0)"

Then MOXy could not be seen on the classpath by javax.xml.bind.
So i changed the code to load MOXy directly:
JAXBContext.newInstance( castle.extdata.autosar.v4.ObjectFactory.class );
JAXBContextFactory.createContext( new Class[] { castle.extdata.autosar.v4.ObjectFactory.class }, null );

Now I get this new error:
[Exception [EclipseLink-25008] (Eclipse Persistence Services - 2.7.3.v20180807-4be1041): org.eclipse.persistence.exceptions.XMLMarshalException
Exception Description: A descriptor with default root element {http://autosar.org/schema/r4.0}AUTOSAR was not found in the project]

As the project was working before, i guess it is not really an issue with the generated objects or data, more likely with the configuration.

Can someone help?
Or is there a runnable RCP example, using MOXy unmarshalling objects, running with Java11?

thanks
Frank

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Re: Migrate RCP to Java11 using MOXy [message #1800706 is a reply to message #1800703]

Sun, 06 January 2019 15:40

Frank Benoit

Messages: 179
Registered: July 2009

Senior Member

Hi

I created a minimal example project with data file, see attachment.
Run the "Test2" button on the toolbar.

To have it working, i used
- targetplatform of Eclipse 4.10,
- EclipseLink 2.7.3
- OpenJDK 11.0.1,
- javax.activation-1.2.0.jar
- jaxb-api-2.4.0-b180830.0359.jar
- jaxb-osgi-2.4.0-b180830.0438.jar

The J11.product.launch configuration lists the applied bundles.
The libs/autosar-jaxbobjs.jar contains the generated classes from the schema.

The exception i get with this:
[Exception [EclipseLink-25008] (Eclipse Persistence Services - 2.7.3.v20180807-4be1041): org.eclipse.persistence.exceptions.XMLMarshalException
Exception Description: A descriptor with default root element {http://autosar.org/schema/r4.0}AUTOSAR was not found in the project]

The same logic and generated objects work for me with Java8.

Can someone help please to make this work with Java 11?

thanks
Frank

Attachment: J11.zip
(Size: 8.02MB, Downloaded 240 times)

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Re: Migrate RCP to Java11 using MOXy [message #1800751 is a reply to message #1800703]

Mon, 07 January 2019 19:28

Frank Benoit

Messages: 179
Registered: July 2009

Senior Member

I was able to solve it.

1.
I removed the jaxb-osgi-2.4.0-b180830.0438.jar from the target platform.
Only added:
- javax.activation-1.2.0.jar
- jaxb-api-2.4.0-b180830.0359.jar

2.
Every bundle using Jaxb having the Require-Bundles:
-javax.xml.bind
-moxy

3.
And then i had the error about @XmlValue in derived classes.
I added the line:
System.setProperty(MOXySystemProperties.XML_VALUE_EXTENSION, "true");
before using the JAXBContextFactory.createContext(...).

Frank

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