Bug 135778 There is an error when the data item has no binding data set
Data item can have no binding data set, if it happens, it indicates it only use the basic Java Script function such as new Date(). At this moment, the data of data item is not stored in report document by DtE, which only supports these data items which has binding data set.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/PreparedDummyQuery.java
public IResultMetaData getResultMetaData( ) throws BirtException
		{
			return null;
		}
		/*
		 * @see org.eclipse.birt.data.engine.api.IResultIterator#next()
		 */
		public boolean next( ) throws BirtException
		{
			if ( this.openStatus == NOT_START )
			{
				this.openStatus = IN_ROW;
				return true;
			}
			else if ( this.openStatus == IN_ROW )
			{
				this.openStatus = ENDED;
				return false;
			}
			else
			{
				throw new DataException( "is ended" );
			}
		}
		/*
		 * @see org.eclipse.birt.data.engine.api.IResultIterator#getRowIndex()
		 */
		public int getRowIndex( ) throws BirtException
		{
			checkOpened( );