Bug 181361 Exception is thrown out in Chart builder when you set all null values for Value Series [0001]
Description: Exception is thrown out in Chart builder when you set all null values for Value Series. Build number: 2.2.0.v20070405-0630 Steps to reproduce: 1. Create a Bar Chart, set all null value data for Value Series. Expected result: No exception is thrown out. Actual result: Exception is thrown out (See the screenshot). Error log: N/A
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/PlotWith3DAxes.java
* dPointToPixel; 
		dYAxisPlotSpacing = cwa.getPlot( ).getVerticalSpacing( )
				* dPointToPixel; 
		dZAxisPlotSpacing = dXAxisPlotSpacing;
		final Axis[] axa = cwa.getPrimaryBaseAxes( );
		final Axis axPrimaryBase = axa[0];
		final Axis axPrimaryOrthogonal = cwa.getPrimaryOrthogonalAxis( axPrimaryBase );
		final Axis axAncillaryBase = cwa.getAncillaryBaseAxis( axPrimaryBase );
		
		Object oaData = null;
		
		OneAxis oaxPrimaryBase = aax.getPrimaryBase( );
		int iPrimaryAxisType = getAxisType( axPrimaryBase );
		if ( iPrimaryAxisType == TEXT || oaxPrimaryBase.isCategoryScale( ) )
		{
			oaData = getTypedDataSet( axPrimaryBase, iPrimaryAxisType, 0 );
		}
		else if ( ( iPrimaryAxisType & NUMERICAL ) == NUMERICAL )
		{
			oaData = getMinMax( axPrimaryBase, iPrimaryAxisType );
		}
		else if ( ( iPrimaryAxisType & DATE_TIME ) == DATE_TIME )
		{
			oaData = getMinMax( axPrimaryBase, iPrimaryAxisType );
		}
		DataSetIterator dsiPrimaryBase = ( oaData instanceof DataSetIterator ) ? (DataSetIterator) oaData
				: new DataSetIterator( oaData, iPrimaryAxisType );
		oaData = null;
		
		OneAxis oaxAncillaryBase = aax.getAncillaryBase( );