Re: brain teaser - embedded felix / class cast exception

[Dieter Wimberger]

Craig:





Object o = bc.getService(sr);



Regards,
Dieter

Something you could try to figure out what is going wrong with classloading is to debug print the associated classloaders. This information could indicate what is actually going wrong. In particular, it would be interesting to see the output of the following: System.out.println("DEBUG:CL Context:" + Thread.currentThread().getContextClassLoader().toString()); System.out.println("DEBUG:CL Current:" + this.getClass().getClassLoader().toString()); System.out.println("DEBUG:CL Service:" + o.getClass().getClassLoader().toString());

Here's the line of code:

CacheServiceMain cacheServiceMain = (CacheServiceMain) bc.getService(sr)

Hi,


eyes from one of the class loader experts out there, I anticipate (I
brought other eyes nearby to look, they're stumped too)...  Thanks,
Craig Phillips

Here's the stack error message:


cast to org.craig.cache.CacheServiceMain

Here's the line of code:



Here's the context snippet, that creates the felix container, more or
less:

System.getProperties().setProperty(Main.CONFIG_PROPERTIES_PROP,

"file:../webapps/craigbox/WEB-INF/felix_config.properties");
Main.loadSystemProperties();
Properties configProps = Main.loadConfigProperties();
List<AutoActivator> list = new ArrayList<AutoActivator>(); // pass
through
list.add(new AutoActivator(configProps)); // pass through
Map map = new StringMap(configProps, false); // pass through
felix = new Felix(map, list); // there isn't a default constructor
felix.start();
BundleContext bc = felix.getBundleContext();
ServiceReference sr =
bc.getServiceReference("org.craig.cache.api.CacheServiceMainApi");
if (sr != null)
{
  CacheServiceMain cacheServiceMain =  (CacheServiceMain)
bc.getService(sr);
  ... // and the rest, which of course doesn't come in to play



in the parent dot.jar file, if that's any consolation...

Can't cast a class to it's own type... Huh? I just got to believe it's some kind of class loader thing going on... I really could use a pair of java.lang.ClassCastException: org.craig.cache.CacheServiceMain cannot be CacheServiceMain cacheServiceMain = (CacheServiceMain) bc.getService(sr) PS - To Karl -- As you can tell, I have not done the "set TCL to null", but this is in the "parent" code... Note that I do have all the classes

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