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package org.dvb.dsmcc;



import java.util.*;

import org.davic.net.*;



/** 

  * This class describes an object change event that is used to monitor

  * the arrival of a new version of a DSMCCObject.

  * For files carried in a DSMCC object carousel, when a change in a module is

  * detected, this event shall 

  * be sent to all registered listeners for all objects carried in that module.

  */



public class ObjectChangeEvent extends java.util.EventObject {





 /** 

	* Creates an ObjectChangeEvent indicating that a new version of the

	* monitored DSMCC Object has been detected. It is up to the application

	* to reload the new version of the object.

	* @param source the DSMCCObject whose version has changed

      	* @param aVersionNumber the new version number.

	*/

  public ObjectChangeEvent(DSMCCObject source, int aVersionNumber)

	{super(source);

	}

  

  /** 

	* This method is used to get the new version number of the 

	* monitored DSMCCObject. For files carried in

	* a DSMCC object carousel, this method shall return the version number of the module

	* carrying the file.

        *

      	* @return the new version number.

	*/

  public int getNewVersionNumber()

	{return 0 ;

	}



  /**

   * Returns the DSMCCObject that has changed

   *

   * @return the DSMCCObject that has changed

   */

  public Object getSource() {return null;}  

 }