Example #1
0
 public static <T> T callWithJarClassLoader(File jarFile, Callable<T> action) throws Exception {
   Thread currentThread = Thread.currentThread();
   ClassLoader contextClassLoader = currentThread.getContextClassLoader();
   try {
     currentThread.setContextClassLoader(createJarClassLoader(jarFile));
     return action.call();
   } finally {
     currentThread.setContextClassLoader(contextClassLoader);
   }
 }
Example #2
0
 public static void runWithJarClassLoader(File jarFile, Runnable action)
     throws MalformedURLException {
   Thread currentThread = Thread.currentThread();
   ClassLoader contextClassLoader = currentThread.getContextClassLoader();
   try {
     currentThread.setContextClassLoader(createJarClassLoader(jarFile));
     action.run();
   } finally {
     currentThread.setContextClassLoader(contextClassLoader);
   }
 }
Example #3
0
  /** Utility routine for setting the context class loader. Returns previous class loader. */
  public static ClassLoader setContextClassLoader(ClassLoader newClassLoader) {

    // Can only reference final local variables from dopriveleged block
    final ClassLoader classLoaderToSet = newClassLoader;

    final Thread currentThread = Thread.currentThread();
    ClassLoader originalClassLoader = currentThread.getContextClassLoader();

    if (classLoaderToSet != originalClassLoader) {
      if (System.getSecurityManager() == null) {
        currentThread.setContextClassLoader(classLoaderToSet);
      } else {
        java.security.AccessController.doPrivileged(
            new java.security.PrivilegedAction() {
              public java.lang.Object run() {
                currentThread.setContextClassLoader(classLoaderToSet);
                return null;
              }
            });
      }
    }
    return originalClassLoader;
  }