Bug 186502 Support more dateTimeLevelType for cube
Model has added more dateTimeLevelType on cube definition. Current available types are: year, quarter, month, week-of-month, week-of-year, day-of-week, day-of-month, day-of-year, hour, minute, second. This need Dte to provide corresponding support as well.
data/org.eclipse.birt.report.data.adapter/src/org/eclipse/birt/report/data/adapter/impl/DataSetIterator.java
{
	
	private boolean started = false;
	private IResultIterator it;
	private ResultMeta metadata;
	private static long nullTime;
	
	static
	{
		Calendar c = Calendar.getInstance( );
		c.clear( );
		c.set( 0, 0, 1, 0, 0, 0 );
		nullTime = c.getTimeInMillis( );
		
	}
	
	/**
	 * Create DataSetIterator for a hierarchy.
	 *