WebAppClassLoader and hasExternalRepositories

[Miguel Angel Pastor Olivar <mi...@gmail.com>]

Hey guys,

This is my first email on this mailing list; I have been searching among
old messages but I have not found anything related to my next question.
Sorry if I am duplicating content :(.

Let me explain my current situation:

   - I am embedding Apache Felix OSGI container into my web application.
   Apache Felix, adds a new URL to the classloader which has loaded it
   (WebappClassLoader)


   - The previous method call sets the field *hasExternalRepositories* to
   be true in the WebappClassLoader instance


   - When my webapp is loading, the Xalan extension manager is searching
   for a class with that format "java:.......PortletBridge".


   - Because the hasExternalRepositories is set to true (because the Apache
   Felix container) the super.findClass(name) is invoked

 if ((clazz == null) && hasExternalRepositories && !searchExternalFirst) {
                try {
                   * clazz = super.findClass(name);*
                } catch(AccessControlException ace) {
                    log.warn("WebappClassLoader.findClassInternal(" + name
                            + ") security exception: " + ace.getMessage(),
ace);
                    throw new ClassNotFoundException(name, ace);
                } catch (RuntimeException e) {
                    if (log.isTraceEnabled())
                        log.trace("      -->RuntimeException Rethrown", e);
                    throw e;
                }
            }



   - The previous method call receives "java:......PortletBridge" as the
   parameter, which cause an IllegalArgumentException. This issue causes the
   Xalan extensions to be not properly configured


   - If I disable the underlying Apache Felix container everything works
   perfectly because the previous code is not executed.

So, my question is, when catching the RuntimeException and rethrowing it,
would it be possible to throw a ClassNotFoundException? I mean

 if ((clazz == null) && hasExternalRepositories && !searchExternalFirst) {
                try {
                    clazz = super.findClass(name);
                } catch(AccessControlException ace) {
                    log.warn("WebappClassLoader.findClassInternal(" + name
                            + ") security exception: " + ace.getMessage(),
ace);
                    throw new ClassNotFoundException(name, ace);
                } *catch (RuntimeException e) {*
*                    if (log.isTraceEnabled())*
*                        log.trace("      -->RuntimeException ocurred", e);*
*                    throw new ClassNotFoundException(name, e);*
*                }*
            }

Thx and sorry about the long email.!

-- 
Un saludo,

Migue

http://migue.github.com