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
}
			else if ( ( iType & TEXT ) == TEXT )
			{
				data.add( osea[i].getSeriesIdentifier( ) );
			}
		}
		if ( ( iType & NUMERICAL ) == NUMERICAL )
		{
			return new DataSetIterator( NumberDataSetImpl.create( data ) );
		}
		else if ( ( iType & DATE_TIME ) == DATE_TIME )
		{
			return new DataSetIterator( DateTimeDataSetImpl.create( data ) );
		}
		else if ( ( iType & TEXT ) == TEXT )
		{
			return new DataSetIterator( TextDataSetImpl.create( data ) );
		}
		return null;
	}
	private final Object getMinMax( Axis ax, int iType ) throws ChartException,
			IllegalArgumentException
	{
		final Series[] sea = ax.getRuntimeSeries( );
		final int iSeriesCount = sea.length;
		DataSet ds;
		Object oV1, oV2, oMin = null, oMax = null;
		PluginSettings ps = PluginSettings.instance( );
		IDataSetProcessor iDSP = null;
		for ( int i = 0; i < iSeriesCount; i++ )