SCM-Manager/scm-webapp/src/main/java/sonia/scm/user/UserEventHack.java

/**
 * Copyright (c) 2010, Sebastian Sdorra
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 3. Neither the name of SCM-Manager; nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * http://bitbucket.org/sdorra/scm-manager
 *
 */



package sonia.scm.user;

//~--- non-JDK imports --------------------------------------------------------

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import sonia.scm.HandlerEventType;

/**
 *
 * @author Sebastian Sdorra
 */
public final class UserEventHack
{

  /**
   * the logger for UserEventHack
   */
  private static final Logger logger =
    LoggerFactory.getLogger(UserEventHack.class);

  //~--- constructors ---------------------------------------------------------

  /**
   * Constructs ...
   *
   */
  private UserEventHack() {}

  //~--- methods --------------------------------------------------------------

  /**
   * Method description
   *
   *
   * @param userManager
   * @param user
   * @param event
   */
  public static void fireEvent(UserManager userManager, HandlerEventType event,
    User user)
  {
    AbstractUserManager abstractUserManager =
      getAbstractUserManager(userManager);

    if (abstractUserManager != null)
    {
      abstractUserManager.fireEvent(event, user);
    }
    else if (logger.isWarnEnabled())
    {
      logger.warn("user manager is not an instance of AbstractUserManager");
    }
  }

  //~--- get methods ----------------------------------------------------------

  /**
   * Method description
   *
   *
   * @param userManager
   *
   * @return
   */
  private static AbstractUserManager getAbstractUserManager(
    UserManager userManager)
  {
    AbstractUserManager abstractUserManager = null;

    if (userManager instanceof UserManagerDecorator)
    {
      abstractUserManager = getAbstractUserManager(
        ((UserManagerDecorator) userManager).getDecorated());
    }
    else if (userManager instanceof AbstractUserManager)
    {
      abstractUserManager = (AbstractUserManager) userManager;
    }

    return abstractUserManager;
  }
}