Description Blaise Doughan 2011-01-18 13:13:52 EST

For the following object model:

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;

@XmlAccessorType(XmlAccessType.NONE)
public class Foo {

    private Bar bar;

    public Bar getBar() {
        return bar;
    }

    public void setBar(Bar bar) {
        this.bar = bar;
    }

}

and:

public class Bar {

    public Bar(String name) {
    }

}

When a JAXBContext is created on these classes the following exception is thrown:

Exception in thread "main" javax.xml.bind.JAXBException: 
Exception Description: The class example.Bar requires a zero argument constructor or a specified factory method.  Note that non-static inner classes do not have zero argument constructors and are not supported.
 - with linked exception:
[Exception [EclipseLink-50001] (Eclipse Persistence Services - 2.3.0.qualifier): org.eclipse.persistence.exceptions.JAXBException
Exception Description: The class example.Bar requires a zero argument constructor or a specified factory method.  Note that non-static inner classes do not have zero argument constructors and are not supported.]
	at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:266)
	at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:213)
	at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:110)
	at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:100)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:202)
	at javax.xml.bind.ContextFinder.find(ContextFinder.java:331)
	at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:574)
	at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:522)
	at forum119.Demo.main(Demo.java:8)
Caused by: Exception [EclipseLink-50001] (Eclipse Persistence Services - 2.3.0.qualifier): org.eclipse.persistence.exceptions.JAXBException
Exception Description: The class example.Bar requires a zero argument constructor or a specified factory method.  Note that non-static inner classes do not have zero argument constructors and are not supported.
	at org.eclipse.persistence.exceptions.JAXBException.factoryMethodOrConstructorRequired(JAXBException.java:122)
	at org.eclipse.persistence.jaxb.compiler.AnnotationsProcessor.finalizeProperties(AnnotationsProcessor.java:651)
	at org.eclipse.persistence.jaxb.compiler.AnnotationsProcessor.processClassesAndProperties(AnnotationsProcessor.java:228)
	at org.eclipse.persistence.jaxb.compiler.Generator.<init>(Generator.java:147)
	at org.eclipse.persistence.jaxb.JAXBContextFactory.createContext(JAXBContextFactory.java:263)
	... 12 more


This exception should not be thrown since Bar should never be processed.