BeanContextServiceRevokedEvent.java 4.3 KB

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  1. /* java.beans.beancontext.BeanContextServiceRevokedEvent
  2. Copyright (C) 1999, 2000 Free Software Foundation, Inc.
  3. This file is part of GNU Classpath.
  4. GNU Classpath is free software; you can redistribute it and/or modify
  5. it under the terms of the GNU General Public License as published by
  6. the Free Software Foundation; either version 2, or (at your option)
  7. any later version.
  8. GNU Classpath is distributed in the hope that it will be useful, but
  9. WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. General Public License for more details.
  12. You should have received a copy of the GNU General Public License
  13. along with GNU Classpath; see the file COPYING. If not, write to the
  14. Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  15. 02110-1301 USA.
  16. Linking this library statically or dynamically with other modules is
  17. making a combined work based on this library. Thus, the terms and
  18. conditions of the GNU General Public License cover the whole
  19. combination.
  20. As a special exception, the copyright holders of this library give you
  21. permission to link this library with independent modules to produce an
  22. executable, regardless of the license terms of these independent
  23. modules, and to copy and distribute the resulting executable under
  24. terms of your choice, provided that you also meet, for each linked
  25. independent module, the terms and conditions of the license of that
  26. module. An independent module is a module which is not derived from
  27. or based on this library. If you modify this library, you may extend
  28. this exception to your version of the library, but you are not
  29. obligated to do so. If you do not wish to do so, delete this
  30. exception statement from your version. */
  31. package java.beans.beancontext;
  32. /**
  33. * Event fired when services are revoked from a <code>BeanContextServices</code>.
  34. *
  35. * @author John Keiser
  36. * @since JDK1.2
  37. * @see java.beans.beancontext.BeanContextServiceRevokedListener
  38. */
  39. public class BeanContextServiceRevokedEvent extends BeanContextEvent {
  40. private static final long serialVersionUID = -1295543154724961754L;
  41. /**
  42. * The <code>Class</code> representing the service which is now
  43. * available.
  44. */
  45. protected Class serviceClass;
  46. private boolean invalidateRefs;
  47. /**
  48. * Create a new service revoked event.
  49. * @param services the <code>BeanContextServices</code> through
  50. * which the service was available. This is also the source
  51. * of the event.
  52. * @param serviceClass the service class that is now revoked.
  53. * @param revokeNow whether the revocation is immediate for all
  54. * classes or just a suggestion.
  55. */
  56. public BeanContextServiceRevokedEvent(BeanContextServices services, Class serviceClass, boolean revokeNow) {
  57. super(services);
  58. this.serviceClass = serviceClass;
  59. invalidateRefs = revokeNow;
  60. }
  61. /**
  62. * Get the revoked service class.
  63. * @return the service class.
  64. */
  65. public Class getServiceClass() {
  66. return serviceClass;
  67. }
  68. /**
  69. * Tell whether the revoked service class is the same as the specified class.
  70. * Identical to <code>getServiceClass().equals(c)</code>.
  71. * @param c the class to compare.
  72. * @return whether the clases are equal.
  73. */
  74. public boolean isServiceClass(Class c) {
  75. return serviceClass.equals(c);
  76. }
  77. /**
  78. * Get the <code>BeanContextServices</code> through which the service was available.
  79. * @return the <code>BeanContextServices</code> through which the
  80. * service was available.
  81. */
  82. public BeanContextServices getSourceAsBeanContextServices() {
  83. return (BeanContextServices)getSource();
  84. }
  85. /**
  86. * Tell whether current instances of the revoked service are usable or not.
  87. * This is determined by whether the service was revoked
  88. * immediately.
  89. *
  90. * @return whether current instances of the revoked service are
  91. * usable.
  92. */
  93. public boolean isCurrentServiceInvalidNow() {
  94. return invalidateRefs;
  95. }
  96. }