Bug 190769 [Regression]The attached report pop up exception when preview
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/data/dte/QueryResultSet.java
{
			return ( (QueryResultSet) parent ).getBaseRSetID( );
		}
		return baseRSetID;
	}
	public void close( )
	{
		
		dataEngine.close( this );
		try
		{
			if ( rs != null )
			{
				rs.close( );
			}
			if ( queryResults != null )
			{
				queryResults.close( );
			}
		}
		catch ( BirtException ex )
		{
			logger.log( Level.SEVERE, ex.getMessage( ), ex );
			
		}
	}
	public Object evaluate( String expr ) throws BirtException
	{