1. /*
  2. * Copyright 2002,2004 The Apache Software Foundation.
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. package org.apache.commons.jexl.util.introspection;
  17. import java.util.Iterator;
  18. /**
  19. * 'Federated' introspection/reflection interface to allow the introspection
  20. * behavior in Velocity to be customized.
  21. *
  22. * @author <a href="mailto:geirm@apache.org">Geir Magusson Jr.</a>
  23. * @version $Id: Uberspect.java,v 1.4 2004/02/28 13:45:21 yoavs Exp $
  24. */
  25. public interface Uberspect
  26. {
  27. /**
  28. * Initializer - will be called before use
  29. */
  30. public void init() throws Exception;
  31. /**
  32. * To support iteratives - #foreach()
  33. */
  34. public Iterator getIterator(Object obj, Info info) throws Exception;
  35. /**
  36. * Returns a general method, corresponding to $foo.bar( $woogie )
  37. */
  38. public VelMethod getMethod(Object obj, String method, Object[] args, Info info) throws Exception;
  39. /**
  40. * Property getter - returns VelPropertyGet appropos for #set($foo = $bar.woogie)
  41. */
  42. public VelPropertyGet getPropertyGet(Object obj, String identifier, Info info) throws Exception;
  43. /**
  44. * Property setter - returns VelPropertySet appropos for #set($foo.bar = "geir")
  45. */
  46. public VelPropertySet getPropertySet(Object obj, String identifier, Object arg, Info info) throws Exception;
  47. }