package com.atlassian.plugins.rest.module;
   
   import java.lang.reflect.InvocationHandler;
   import java.lang.reflect.InvocationTargetException;
   import java.lang.reflect.Method;
   
   public class ContextClassLoaderSwitchingProxy implements InvocationHandler
   {
       private final Object delegate;
      private final ClassLoader[] classLoaders;
  
      public ContextClassLoaderSwitchingProxy(final Object delegate, final ClassLoader... classLoaders)
      {
          this.delegate = delegate;
          this.classLoaders = classLoaders;
      }
  
      public Object invoke(final Object proxy, final Method method, final Object[] args) throws Throwable
      {
          ClassLoader oldClassLoader = Thread.currentThread().getContextClassLoader();
          ChainingClassLoader chainingClassLoader = new ChainingClassLoader(classLoaders);
          try
          {
              try
              {
                  Thread.currentThread().setContextClassLoader(chainingClassLoader);
                  return method.invoke(delegate, args);
              }
              catch (InvocationTargetException e)
              {
                  throw e.getCause();
              }
          }
          finally
          {
              Thread.currentThread().setContextClassLoader(oldClassLoader);
          }
  
      }
  
  }