Bug 123545 DateTimeSpan not working properly in Edit Data Set
i cannot use the following script in Edit Data Set, DateTimeSpan.addDate(row["SHIPPEDDATE"], 0, 0, 10) seps to reproduce: - open the attached report design - go to Data Explorer - open Edit Data Set - Preview Results expected behavior: - the above script is executed. actual behavior: - errors were thrown.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/DataEngineImpl.java
* been defined, its definition will be updated with the content of the provided DataSetDesign
	 */
	public void defineDataSet( IBaseDataSetDesign dataSet )
			throws DataException
	{
		logger.entering( DataEngineImpl.class.getName( ),
				"defineDataSet",
				dataSet == null ? null : dataSet.getName( ) );
		if ( dataSet == null )
		{
			NullPointerException e = new NullPointerException( "dataSource param cannot be null" );
			logger.logp( Level.WARNING,
					DataEngineImpl.class.getName( ),
					"defineDataSet",
					"dataSource param cannot be null",
					e );
			throw e;
		}
		if ( dataSources == null )
		{
			IllegalStateException e = new IllegalStateException( "DataEngine has been shutdown" );
			logger.logp( Level.WARNING,
					DataEngineImpl.class.getName( ),
					"defineDataSet",
					"DataEngine has been shutdown",
					e );
			throw e;
		}
		String name = dataSet.getName( );
		if ( name == null || name.length( ) == 0 )