Bug 136740 Error exporting data from a grouped report.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/ExprManagerUtil.java
{
				Node n = getMatchedNode( (Node) l.get( j ), result );
				
				if( n!= null )
					result[i].addChild( n );
			}
		}
		return result;
	}
	/**
	 * 
	 * @param node
	 * @param nodes
	 * @return
	 */
	private static Node getMatchedNode( Node node, Node[] nodes )
	{
		for ( int i = 0; i < nodes.length; i++ )
		{
			if ( nodes[i].equals( node ) )
				return nodes[i];
		}
		return null;
	}
}
/**
 * 
 *
 */
class Node