[GitHub] [uima-uimaj] reckart opened a new issue, #251: Resource interface class may not be found

[GitBox <gi...@apache.org>]

reckart opened a new issue, #251:
URL: https://github.com/apache/uima-uimaj/issues/251

   **Describe the bug**
   When running in an OSGI environment, the TCCL may have access to a component, but the component might be accessing a resource implementing an interface to which the TCCL has no access.
   
   **Expected behavior**
   If the interface class cannot be looked up through the usual path (TCCL, extension classloader), also try the classloader of the resource itself.
   
   ```
           try {
             String name = aDependencies[i].getInterfaceName();
             if (name != null && name.length() > 0) {
               Class<?> theInterface = loadUserClass(name); // <= this may only be available through the resourceClass'es classloader
   
               Class<?> resourceClass = getResourceClass(qname); // <= this may be available
               if (!theInterface.isAssignableFrom(resourceClass)) {
                 throw new ResourceInitializationException(
                         ResourceInitializationException.RESOURCE_DOES_NOT_IMPLEMENT_INTERFACE,
                         new Object[] { qname, aDependencies[i].getInterfaceName(),
                             aDependencies[i].getSourceUrlString() });
               }
             }
           } catch (ClassNotFoundException e) {
             throw new ResourceInitializationException(ResourceInitializationException.CLASS_NOT_FOUND,
                     new Object[] { aDependencies[i].getInterfaceName(),
                         aDependencies[i].getSourceUrlString() });
           }
   ```
   
   **Please complete the following information:**
    - Version: 3.2.0
   


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