Find a way out of the ClassLoader maze

public abstract class ClassLoaderResolver
{
    /**
     * This method selects the best classloader instance to be used for
     * class/resource loading by whoever calls this method. The decision
     * typically involves choosing between the caller's current, thread context,
     * system, and other classloaders in the JVM and is made by the {@link IClassLoadStrategy}
     * instance established by the last call to {@link #setStrategy}.
     * 
     * @return classloader to be used by the caller ['null' indicates the
     * primordial loader]   
     */
    public static synchronized ClassLoader getClassLoader ()
    {
        final Class caller = getCallerClass (0);
        final ClassLoadContext ctx = new ClassLoadContext (caller);
        
        return s_strategy.getClassLoader (ctx); 
    }
    public static synchronized IClassLoadStrategy getStrategy ()
    {
        return s_strategy;
    }
    public static synchronized IClassLoadStrategy setStrategy (final IClassLoadStrategy strategy)
    {
        final IClassLoadStrategy old = s_strategy;
        s_strategy = strategy;
        
        return old;
    }
        
    /**
     * A helper class to get the call context. It subclasses SecurityManager
     * to make getClassContext() accessible. An instance of CallerResolver
     * only needs to be created, not installed as an actual security
     * manager.
     */
    private static final class CallerResolver extends SecurityManager
    {
        protected Class [] getClassContext ()
        {
            return super.getClassContext ();
        }
        
    } // End of nested class 
    
    
    /*
     * Indexes into the current method call context with a given
     * offset.
     */
    private static Class getCallerClass (final int callerOffset)
    {        
        return CALLER_RESOLVER.getClassContext () [CALL_CONTEXT_OFFSET +
            callerOffset];
    }
    
    private static IClassLoadStrategy s_strategy; // initialized in <clinit>
    
    private static final int CALL_CONTEXT_OFFSET = 3; // may need to change if this class is redesigned
    private static final CallerResolver CALLER_RESOLVER; // set in <clinit>
    
    static
    {
        try
        {
            // This can fail if the current SecurityManager does not allow
            // RuntimePermission ("createSecurityManager"):
            
            CALLER_RESOLVER = new CallerResolver ();
        }
        catch (SecurityException se)
        {
            throw new RuntimeException ("ClassLoaderResolver: could not create CallerResolver: " + se);
        }
        
        s_strategy = new DefaultClassLoadStrategy ();
    }
} // End of class.

public abstract class ResourceLoader
{
    /**
     * @see java.lang.ClassLoader#loadClass(java.lang.String)
     */
    public static Class loadClass (final String name)
        throws ClassNotFoundException
    {
        final ClassLoader loader = ClassLoaderResolver.getClassLoader (1);
        
        return Class.forName (name, false, loader);
    }
    /**
     * @see java.lang.ClassLoader#getResource(java.lang.String)
     */    
    public static URL getResource (final String name)
    {
        final ClassLoader loader = ClassLoaderResolver.getClassLoader (1);
        
        if (loader != null)
            return loader.getResource (name);
        else
            return ClassLoader.getSystemResource (name);
    }
    ... more methods ...
} // End of class

public interface IClassLoadStrategy
{
    ClassLoader getClassLoader (ClassLoadContext ctx);
} // End of interface

public class ClassLoadContext
{
    public final Class getCallerClass ()
    {
        return m_caller;
    }
    
    ClassLoadContext (final Class caller)
    {
        m_caller = caller;
    }
    
    private final Class m_caller;
} // End of class

public class DefaultClassLoadStrategy implements IClassLoadStrategy
{
    public ClassLoader getClassLoader (final ClassLoadContext ctx)
    {
        final ClassLoader callerLoader = ctx.getCallerClass ().getClassLoader ();
        final ClassLoader contextLoader = Thread.currentThread ().getContextClassLoader ();
        
        ClassLoader result;
        
        // If 'callerLoader' and 'contextLoader' are in a parent-child
        // relationship, always choose the child:
        
        if (isChild (contextLoader, callerLoader))
            result = callerLoader;
        else if (isChild (callerLoader, contextLoader))
            result = contextLoader;
        else
        {
            // This else branch could be merged into the previous one,
            // but I show it here to emphasize the ambiguous case:
            result = contextLoader;
        }
        
        final ClassLoader systemLoader = ClassLoader.getSystemClassLoader ();
        
        // Precaution for when deployed as a bootstrap or extension class:
        if (isChild (result, systemLoader))
            result = systemLoader;
        
        return result;
    }
    
    ... more methods ...
} // End of class