Package org.knopflerfish.bundle.cm

Source Code of org.knopflerfish.bundle.cm.ListenerEvent

/*
* Copyright (c) 2003-2005, KNOPFLERFISH project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
*   notice, this list of conditions and the following disclaimer.
*
* - 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.
*
* - Neither the name of the KNOPFLERFISH project 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
* COPYRIGHT OWNER 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.
*/

package org.knopflerfish.bundle.cm;

import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;
import org.osgi.service.cm.ConfigurationEvent;
import org.osgi.service.cm.ConfigurationListener;

/**
* @author js
*/
public class ListenerEvent {

  /**
   * The service reference to the service we are to send the event to.
   */
  private final ServiceReference sr;

  /**
   * The configuration event we want to send.
   */
  private final ConfigurationEvent event;

  /**
   * Create a listener event.
   * @param sr The service reference to the service we are to send the event to.
   * @param event The configuration event we want to send.
   */
  public ListenerEvent(ServiceReference sr, ConfigurationEvent event) {
    this.sr = sr;
    this.event = event;
  }

  /**
   * Send the event to the service.
   * @param bc The bundle context to use to get the service.
   */
  public void sendEvent(BundleContext bc) {
    if(sr != null)
    {
      ConfigurationListener configurationListener = (ConfigurationListener) bc.getService(sr);
      if(configurationListener != null)
      {
        configurationListener.configurationEvent(event);
      }
      bc.ungetService(sr);
    }
  }
}
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