Bug 180864 Change Allow Null option in Cascading Group.[0705]
Description: Change Allow Null option in Cascading Group. Build number:2.2.0.v20070404 Steps to reproduce: 1. New a cascading group and add sub parameter. Expected result: Is Required option in cascading group definition dialog. Actual result: Allow null value option in Cascading Group definition dialog Error log:N/A
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/CascadingParametersDialog.java
{
						if ( !COLUMN_VALUE.equals( property ) )
						{
							return false;
						}
					}
				}
				else if ( !COLUMN_DATA_SET.equals( property ) )
				{
					return false;
				}
			}
			if ( COLUMN_VALUE.equals( property ) )
			{
				if ( getDataSetColumns( (ScalarParameterHandle) element, true ).length == 0 )
				{
					return false;
				}
			}
			setCellEditorItems( );
			return true;
		}
		public Object getValue( Object element, String property )
		{
			if ( element instanceof ScalarParameterHandle )
			{
				ScalarParameterHandle parameter = (ScalarParameterHandle) element;
				String value = null;
				if ( COLUMN_NAME.equals( property ) )
				{