java.util.ServiceLoader does not work with JarFileClassLoader

[slawomirkisiel]

Description:
When you want to use ServiceLoader with JarFileClassLoader it fails not founding any implementation of selected service class.

Current flow looks like this:

1. ServiceLoader class invokes getResources on base ClassLoader class.
2. This method invokes {@link org.apache.axis2.classloader.MultiParentClassLoader#findResources(String)} method.
3. Subsequently super.findResources(String) method is executed which is {@link java.net.URLClassLoader#findResources(String)}.

Method
{@link org.apache.axis2.classloader.JarFileClassLoader#internalfindResources} is never executed and this is the place where {@link org.apache.axis2.classloader.UrlResourceFinder} resourceFinder object is used to fetch resources. On the contrary {@link org.apache.axis2.classloader.JarFileClassLoader#getResource(String)} method is used directly when try to fetch single resource object. This gives inconsistency by returning valid object with getResource(String) method but empty Enumeration by getResources(String) method.
Suggested Labels:
JarFileClassLoader, ServiceLoader, findResources, internalfindResources

Suggested Assignees:

Affected Product Version:
master branch

OS, DB, other environment details and versions:
does not matter

Steps to reproduce:
Use java.util.ClassLoader in combination with JarFileClassLoader.

Related Issues:

Suggested solution
Implement findResources method instead of internalfindResources.