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   *  to you under the Apache License, Version 2.0 (the
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  package org.apache.cayenne.configuration.event;
  
  import org.apache.cayenne.configuration.DataNodeDescriptor;
  import org.apache.cayenne.map.event.MapEvent;
  
  /** 
   * Represents events resulted from DataNode changes 
   * in CayenneModeler.
   */
  public class DataNodeEvent extends MapEvent {
  	protected DataNodeDescriptor dataNode;
  
  	/** Creates a node change event. */
  	public DataNodeEvent(Object src, DataNodeDescriptor nextNode) {
  		super(src);
  		setDataNode(nextNode);
  	}
  
  	/** Creates a node event of a specified type. */
  	public DataNodeEvent(Object src, DataNodeDescriptor node, int id) {
  		this(src, node);
  		setId(id);
  	}
  
  	/** Creates a node name change event.*/
  	public DataNodeEvent(Object src, DataNodeDescriptor node, String oldName) {
  		this(src, node);
  		setOldName(oldName);
  	}
  
  	/** Returns node object associated with this event. */
  	public DataNodeDescriptor getDataNode() {
  		return dataNode;
  	}
  
  	/**
  	 * Sets the dataNode.
  	 * 
  	 * @param dataNode The dataNode to set
  	 */
  	public void setDataNode(DataNodeDescriptor dataNode) {
  		this.dataNode = dataNode;
  	}
  	
  	@Override
      public String getNewName() {
  		return (dataNode != null) ? dataNode.getName() : null;
  	}
  }
  