Bug 132805 Set descending to outer group will affect inner group.
Description: Set descending to outer group will affect inner group. Steps to reproduce: 1. New a sample datasource and dataset from orders. 2. Drag the dataset to Layout. 3. Add a group on ordernumber, interval 10, descending. 4. Add another group on orderdate, interval day 2, ascending. 5. Preview. Expected result: Data are grouped correctly. Actual result: Inner group didn't work unless you set outer group's sort to asc.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/QueryExecutor.java
}
	/*
	 * Closes the executor; release all odi resources
	 * 
	 * @see org.eclipse.birt.data.engine.impl.IQueryExecutor#close()
	 */
	public void close( )
	{
		if ( odiQuery == null )
		{
			
			logger.logp( Level.FINER,
					QueryExecutor.class.getName( ),
					"close",
					"executor closed " );
			return;
		}
		
	    
	    try
		{
    		dataSet.beforeClose();
		}
	    catch (DataException e )
		{
			logger.logp( Level.FINE,
					QueryExecutor.class.getName( ),
					"close",
					e.getMessage( ),
					e );