Bug 182895 Support sort on Level attribute.
Currently in OLAP engine we only support sort on level key value. We should go ahead to support sort on level attribute value.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/olap/driver/DimensionAxis.java
*
	 */
	public void close( ) throws OLAPException
	{
		try
		{
			this.rs.close( );
		}
		catch ( IOException e )
		{
			throw new OLAPException( e.getLocalizedMessage( ) );
		}
	}
	/**
	 * Return the extend of this cursor
	 * 
	 * @return
	 */
	public long getExtend( )
	{
		return 0;
	}
	/**
	 * Returns the type of the cursor.
	 * @return
	 */
	public int getType( )
	{
		return 0;
	}