/hudson-core/src/main/java/hudson/util/MaskingClassLoader.java

http://github.com/hudson/hudson · Java · 61 lines · 20 code · 6 blank · 35 comment · 2 complexity · 930ae84b4510887099fc85f2ba8dfbdb MD5 · raw file

  1. /*
  2. * The MIT License
  3. *
  4. * Copyright (c) 2004-2009, Sun Microsystems, Inc.
  5. *
  6. * Permission is hereby granted, free of charge, to any person obtaining a copy
  7. * of this software and associated documentation files (the "Software"), to deal
  8. * in the Software without restriction, including without limitation the rights
  9. * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10. * copies of the Software, and to permit persons to whom the Software is
  11. * furnished to do so, subject to the following conditions:
  12. *
  13. * The above copyright notice and this permission notice shall be included in
  14. * all copies or substantial portions of the Software.
  15. *
  16. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22. * THE SOFTWARE.
  23. */
  24. package hudson.util;
  25. import java.util.Collection;
  26. /**
  27. * {@link ClassLoader} that masks a specified set of classes
  28. * from its parent class loader.
  29. *
  30. * <p>
  31. * This code is used to create an isolated environment.
  32. *
  33. * @author Kohsuke Kawaguchi
  34. */
  35. public class MaskingClassLoader extends ClassLoader {
  36. /**
  37. * Prefix of the packages that should be hidden.
  38. */
  39. private final String[] masks;
  40. public MaskingClassLoader(ClassLoader parent, String... masks) {
  41. super(parent);
  42. this.masks = masks;
  43. }
  44. public MaskingClassLoader(ClassLoader parent, Collection<String> masks) {
  45. this(parent, masks.toArray(new String[masks.size()]));
  46. }
  47. @Override
  48. protected synchronized Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
  49. for (String mask : masks) {
  50. if(name.startsWith(mask))
  51. throw new ClassNotFoundException();
  52. }
  53. return super.loadClass(name, resolve);
  54. }
  55. }