Bug 113938 Report is marked dirty when open/close cascading parameter dialog without doing any operation on it
description: Report is marked dirty when open/close cascading parameter dialog without doing any operation on it steps to reproduce: 1.new a cascading parameter group 2.save the reprot 3.double click the cascading parameter to bring out edit box 4.click OK to close edit box actual result: Report has been marked dirty expected result: No dirty marked for that no operations done in edit parameter dialog
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
value = choice.getValue( );
				}
				else if ( COLUMN_DISPLAY_TEXT.equals( property ) )
				{
					value = choice.getLabel( );
					if ( value == null )
					{
						value = choice.getValue( );
					}
					if ( value == null )
					{
						value = LABEL_NULL;
					}
				}
				if ( !( value == null ^ newValue == null ) )
				{
					if ( newValue == null )
					{
						return true;
					}
					if ( DesignChoiceConstants.PARAM_TYPE_DECIMAL.equals( getSelectedDataType( ) ) )
					{
						try
						{
							if ( DataTypeUtil.toBigDecimal( value )
									.compareTo( DataTypeUtil.toBigDecimal( newValue ) ) == 0 )
							{
								return true;
							}
						}