Hello everyone
I have code, which calls SOAP services using the dynamic client
feature of Apache CXF. The code basically looks like this:
JaxWsDynamicClientFactory dcf = JaxWsDynamicClientFactory.newInstance();
this.client = dcf.createClient(new URL(wsdlUrl));
The Exception is thrown within createClient, but only under certain
circumstances. If I run the code within a simple test app everything
runs fine. However, if I move my code to the actual context, as a
plugin within another software, the Exception occurs. The other
software is "Kettle", a tool of the Pentaho BI Suite. I suspect, that
this is because Kettle installs an own classloader in the thread
context and the CXF code that gets executed is somehow incompatible
with this specific classloader.
Does anyone has a had similar problems when embedding CXF into another
application? What further actions are recommended?
--
I have debugged the NullPointerException within Kettle and have the
exact position where the fault occurs. However, I have no clue *what*
the code inquestion is doing, why it is doing this and what would be a
correct behaviour.
The NullPointerException is thrown at
org.apache.cxf.wsdl11.WSDLServiceFactory within the constructor
"public WSDLServiceFactory(Bus b, URL url)" at line 67. This line
looks like this:
definition = getBus().getExtension(WSDLManager.class).getDefinition(wsdlUrl);
The NullPointerException occures, because the getExtension method
returns null. At run time, the getBus() method returns an instance of
org.apache.cxf.bus.CXFBusImpl. Its complete getExtension in this class
looks like:
public final <T> T getExtension(Class<T> extensionType) {
Object obj = extensions.get(extensionType);
if (obj == null) {
ConfiguredBeanLocator loc =
(ConfiguredBeanLocator)extensions.get(ConfiguredBeanLocator.class);
if (loc == null) {
loc = createConfiguredBeanLocator();
}
if (loc != null) {
//force loading
Collection<?> objs = loc.getBeansOfType(extensionType);
if (objs != null) {
for (Object o : objs) {
extensions.put(extensionType, o);
}
}
obj = extensions.get(extensionType);
}
}
if (null != obj) {
return extensionType.cast(obj);
}
return null;
}
As you can see, there is a code path that may return null. A case in
which the code at org.apache.cxf.wsdl11.WSDLServiceFactory *will*
fail. In my understanding this is a bug. Am I seeing this right?
Regards
Martin Thurau
