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  package org.apache.cayenne.configuration.event;
  
  import org.apache.cayenne.map.DataMap;
  import org.apache.cayenne.map.event.MapEvent;
  
  /** 
   * An events describing a DataMap change.
   */
  public class DataMapEvent extends MapEvent {
  	protected DataMap dataMap;
  
  	/** Creates a DataMap change event. */
  	public DataMapEvent(Object src, DataMap dataMap) {
  		super(src);
  		this.dataMap = dataMap;
  	}
  
  	/** Creates a DataMap event of a specified type. */
  	public DataMapEvent(Object src, DataMap dataMap, int id) {
  		this(src, dataMap);
  		setId(id);
  	}
  
  	/** Creates a DataMap name change event.*/
  	public DataMapEvent(Object src, DataMap dataMap, String oldName) {
  		this(src, dataMap);
  		setOldName(oldName);
  	}
  
  	/** 
  	 * Returns DataMap associated with this event. 
  	 */
  	public DataMap getDataMap() {
  		return dataMap;
  	}
  	
  	/**
  	 * Sets DataMap associated with this event.
  	 * 
  	 * @param dataMap The dataMap to set
  	 */
  	public void setDataMap(DataMap dataMap) {
  		this.dataMap = dataMap;
  	}
  
      @Override
      public String getNewName() {
          return (dataMap != null) ? dataMap.getName() : null;
      }
  }
  